CN101438909B - Showcase - Google Patents

Abstract

An object is to provide a showcase in which appropriate illumination is realized by an LED illumination apparatus having a high durability against turning ON/OFF and capable of securing a predetermined illumination intensity even under an environment at a low temperature and in which dew condensation caused in a door frame can effectively be suppressed. The showcase (1) in which the inside of a display chamber (5) constituted in a main body (2) so as to display commodities is illuminated by the LED illumination apparatus (15) includes a glass door (7) which openably closes an opening of the display chamber (5), and a metal door frame (45) which is provided in the main body so as to constitute an opening edge of the display chamber and on which the glass door abuts, and the LED illumination apparatus (15) is provided on the surface of the door frame (45) on the side of the display chamber (5) in a heat exchange relation.

Description

Showcase

Technical field

The present invention relates to the showcase of LED lighting device throwing light in the showroom of displaying commodity.

Background technology

At present, in the supermarket or convenience store use a kind of showcase, it constitutes the showroom in the body that the heat insulating box by front openings constitutes, utilize to rotate freely glass door and open and close and closes this front openings freely.The door of this showcase is in order moderately to keep closed condition, on the opening edge of the body of this butt metal system doorframe is installed, and the gasket seal (ガ ス ケ Star ト) of built-in magnet is installed on the edge portion of the open side of door.Side with opening is the center, rotating freely, the door of pivot suspension descends in off position, closely contact with the metal system frame member of open side by the magnetic force that is arranged on the magnet on the door,, under such state, keep closed condition to prevent the leakage of cold air effectively.

Because aforesaid doorframe is connected with outside, and is close in the showroom that is cooled to set point of temperature, so the temperature difference in external temperature and the showroom causes the dew that condenses easily.Owing on described peristome, adhere to dew, therefore cause or got wet in the ground etc. of being provided with of showcase the showroom in, perhaps move many inconvenience that dew is splashed because of the switch door.

Therefore,, bury electric heater underground, by often to the switch on face of the glass reveal that heats doorframe of this electric heater at the metal system doorframe inner face of the opening edge of the body of door butt in the past for the anti-possible trouble that terminates in of the phenomenon of the dew that condenses.

On the other hand, in the showroom,, use fluorescent lamp or LED matrix illumination as lighting device in order to throw light on to being displayed in inner commodity.

Patent document 1: Japanese kokai publication hei 5-34047 communique

In addition, the fluorescent lamp or the LED matrix that use as lighting device throw light on, because of just heating of energising itself.In utilizing cooling device cooling showroom and in the showcase that uses,, therefore, have the lighting device that generates heat because of turning on light, make the problem of the cooling effectiveness reduction that utilizes cooling device because this lighting device is arranged in the showroom.

So, proposed according to having or not client's illumination apparatus to carry out methods such as break-make (ON/OFF) or adjusting illumination.But present employed fluorescent lamp owing to being therefore to switch to low temperature after the on-state in the showroom that is used as cooling space, realize that the illumination of stipulating just needs the regular hour.In addition, owing to carry out break-make continually, therefore also shorten the life-span of self.

In addition, the electric heater that the heating doorframe is used is irrelevant with the break-make that is arranged on the lighting device in the showroom, is in energising for a long time.Therefore the heat that this electric heater sends exists the problem of the cooling effectiveness that reduces refrigerating plant owing to also can pass in the showroom.

Summary of the invention

The present invention provides a kind of showcase in order to solve above-mentioned technical task, though its by anti-in break-make and can guarantee that under low temperature environment the LED lighting device of regulation illumination realizes suitable illumination, and can suppress the dew that condenses on the doorframe effectively.

Showcase of the present invention is characterised in that: its with the LED lighting device to be formed in the body and the showroom of display commodity in throw light on, have switching close freely the showroom opening glass door and constitute the opening edge of showroom and be arranged on metal system doorframe on the body, the glass door butt, the LED lighting device is arranged on heat exchange relationship on the face of showroom side of doorframe.

The showcase of a second aspect of the present invention is characterized in that: except that foregoing invention, have the electric heater of the face of the glass reveal that heats doorframe, when the LED lighting device is turned off the light, switch on to electric heater.

The showcase of a third aspect of the present invention is characterized in that: except that the first aspect of the invention described above, the LED lighting device has electric heater, when the LED lighting device, to this electric heater energising.

According to the present invention, with the LED lighting device to be formed in the body and the showroom of display commodity in throw light on and the showcase that constitutes, have: the glass door that opens and closes the opening of closing the showroom freely, and constitute the opening edge of showroom and be arranged on the body, the metal system doorframe of glass door butt, because the LED lighting device is arranged on heat exchange relationship on the face of showroom side of doorframe, so heat of LED lighting device because of itself heating of energising, can pass on the face of showroom side of doorframe, and can suppress effectively because of the dew that on doorframe, condenses easily of the temperature difference in outer temperature and the showroom.

Thus, can avoid getting wet in the showroom or the unfavorable condition such as ground that is provided with of showcase takes place owing to the dew that condenses on the doorframe.And, by the on-off action of glass door, can avoid taking place unfavorable condition generations such as splashing of dew.

Invention according to second aspect, on the basis of foregoing invention, electric heater with face of the glass reveal that heats doorframe, by when the LED lighting device is turned off the light, switching on to electric heater, even can not utilize under the situation of the heat heating doorframe that itself sends turning off the light because of the LED lighting device, also can be according to the turning off the light of this LED lighting device, to the electric heater energising of the face of the glass reveal of heating doorframe, thereby suppress the dew that condenses on the doorframe effectively.

In addition, invention according to the third aspect, on the basis of the invention of above-mentioned first aspect, the LED lighting device has electric heater, by when this LED lighting device is turned off the light, switching on to this electric heater, even under the situation that can not utilize the heat heating doorframe that itself sends because of turning off the light of LED lighting device, according to turning off the light of this LED lighting device, switch on to electric heater, thereby on the face of the showroom side of the heat transferred doorframe that electric heater is produced, also can suppress the dew that condenses on the doorframe effectively.

Description of drawings

Fig. 1 is suitable for showcase front view of the present invention;

Fig. 2 is the profile that amplify the part of the showcase of Fig. 1;

Fig. 3 is the side view of lighting device;

Fig. 4 is the partial enlarged drawing of Fig. 3;

Fig. 5 is the partial enlarged drawing of substrate;

Fig. 6 is the electrical diagram of control device;

Fig. 7 is the circuit diagram of expression force-feeling sensor's connection;

Fig. 8 is the local amplification profile as the showcase of other embodiment.

Description of reference numerals

1 showcase; 2 heat insulating boxes (body); 5 showrooms; 6 front openings; 7 glass doors; 8 pillars; 11 force-feeling sensors; 15 LED lighting devices; 16 LED illuminating members; 17 LED elements; 18 substrates; 20 installing plates; 21 retaining members; 24 sidewalls; 30 lampshades; 31 terminal boards; 32 LED lighting control section, 33 power supplys; 34 people feel a little; 35 power supply terminals; 36 output contact terminals; 37 common contact terminals; 40 heat-barrier materials; The 40A hollow bulb; 41 electric heaters (resistance); 45 doorframes; 46 illumination installation portions; 48 illuminance transducers; 49 on-off switches (door open-close detection apparatus); 50 indoor temperature transmitters; 51 temperature display parts (temperature indicating device); 52 electric heaters; 53 light switches; 54 converters; 55 first connecting portions; 56 second connecting portions; 57 the 3rd connecting portions; 58 DC power source units; 60 short-circuit lines.

The specific embodiment

Below, with reference to accompanying drawing in detail embodiments of the present invention are described in detail.Fig. 1 is the front view that is suitable for showcase 1 of the present invention, and Fig. 2 is the local amplification profile of showcase 1.Showcase 1 is arranged on local low-temperature showcase such as supermarket or convenience store, and its body is made of the heat insulating box (thermal wall) 2 of front openings.

This heat insulating box 2 by the steel plate system outer container 3 of front openings, keep at interval and be installed in this outer container 3 and the not shown interior case of the steel plate system of front openings or hard resin system and foam filled polyurathamc heat-barrier material between outer container 3 and interior case constitute.

In this, constituteshowroom 5 in the case, and close case in this freely by 7,7,7 switchings of a plurality of (being 3 in the present embodiment) rotary type glass door.Thisglass door 7,7,7 constitutes the whole inside to the lower end, the upper end that can have an X-rayed from theshowroom 5 front openings 6.Thisglass door 7 constitutes by constituting aframework 7A of limit portion and being installed in thisframework 7A and can having an X-rayed inner glass plate 7B.Be provided withgasket seal 7C in the back offramework 7A.

Onfront openings 6 limits of heat insulating box 2, be provided with a plurality of (therefore establish 2 owing to be provided with 3doors 7 this moment)pillar 8 from top to bottom with predetermined distance.Thispillar 8 by the heat-barrier material 40 of the column of extending up and down, be connected to the front of this heat-barrier material 40 and be provided with and constitute thedoorframe 45 of front ofpillar 8 and theillumination installation portion 46 that is provided with in the mode of carrying out heat exchange with thisdoorframe 45 constitutes.

Heat-barrier material 40, it is formed with substantial middle place that is positioned at the cross section and thehollow bulb 40A that extends up and down.Doorframe 45, itself and the back side (gasket seal 7C) butt of theglass door 7 that opens and closes thefront openings 6 close heat insulating box 2 freely, and make by the good metal material of thermal conductivity.In addition,illumination installation portion 46 is the same withdoorframe 45, and the metal material good by thermal conductivity constitutes, and is set to the back butt of its front end anddoorframe 45, its end is rearward crooked along thehollow bulb 40A of heat-barrier material 40, and also rearward only extends with prescribed level than the rear wall of heat-barrier material 40.And the rear end of thisillumination installation portion 46 only tilts and forms to the central rears ofpillar 8 with predetermined angular.

In addition, as narrating in the back, because thisillumination installation portion 46 can be emitted the heat that is transmitted by retainingmember 21 effectively, and this heat is passed on thedoorframe 45 that is provided with in the mode of carrying out heat exchange with thisillumination installation portion 46, therefore can constitutes by a plurality of (be 2 this moment) tabular component with each inwall (side) butt of thehollow bulb 40A of heat-barrier material 40.Reference numeral 47 expressions are filled in the heat-barrier material that is centered on the space that constitutes byillumination installation portion 46 anddoorframe 45 back among the figure.

According to described structure, eachglass door 7 closely contacts with thedoorframe 45 that constitutespillar 8 fronts withfront openings 6 limit portions by thegasket seal 7C of its back, closes in theshowroom 5.

In addition, 5 the back side and front portion in the showroom uprightly are provided withshelf pillar 10 from top to bottom, and putting on the shelf at thisshelf pillar 10 is provided with several layers shelf 9.On thisshelf pillar 10, be formed with a plurality of connecting holes with predetermined distance, set up the connecting hole ofshelf 9 by change, can change the height and position ofshelf 9.

In the present embodiment, corresponding with the rear of describedpillar 8,5 the back side and front portion are provided withshelf pillar 10 in the showroom.Therefore, eachshelf 9 is corresponding with the rear of eachglass door 7 and set up several layers respectively.

In addition, 5 internal upper parts are provided with cooler and pressure fan as cooling device R (only shown in Figure 6) in the showroom.Cooler constitutes cooling devices with other not shown compressor and the condenser etc. of being provided with, and this cooling device constitutes so-called freeze cycle.By the cold air forced circulation that this cooler produces being arrivedshowroom 5, make the temperature that is cooled to stipulate in theshowroom 5 with pressure fan.

Then, with reference to Fig. 2 to Fig. 5, elaborate theLED lighting device 15 that is located in the showroom 5.Fig. 3 is the side view ofLED lighting device 15, and Fig. 4 is the partial enlarged drawing of Fig. 3, and Fig. 5 is the partial enlarged drawing ofsubstrate 18.

In the present embodiment, in the inboard, opening 6 limit of the heat insulating box 2 that constitutes body, specifically be 5 forward corner andpillar 8 in the showroom, be provided withLED lighting device 15 from top to bottom.ThisLED lighting device 15 by a plurality ofLED illuminating members 16, keep thisLED illuminating member 16 and be installed in the retainingmember 21 of inboard, opening 6 limit of heat insulating box 2 andlampshade 30,lid member 61 constitute.

As shown in Figure 5, LEDilluminating member 16 is made of thesubstrate 18 that disposes a plurality ofLED elements 17 and a plurality of electric heater (resistance) 41, and thissubstrate 18 is fixed on the good installing plate of thermal conductivity 20.Substrate 18 extends along its length and constitutes, and with predetermined distance a plurality ofLED elements 17 is installed on this substrate 18.LED element 17 in the present embodiment is SMD White LED elements.

In addition, eachLED element 17 is one group with the quantity of regulation, is connected on theconnector 42 of being located at the end, and is same, and eachelectric heater 41 is one group with the quantity of regulation also, in parallel withLED element 17 and be connected on the connector 42.In addition, on installingplate 20, form screw hole, retainingmember 21 for screw stays.

Retainingmember 21 is that thefront openings 6 of relative heat insulating box 2 is extended and the good hardware of thermal conductivity that constitutes from top to bottom.The section of retainingmember 21 is roughly " コ " shape, and its upper and lower end parts is closed by lid member 31.This retainingmember 21 is installed with the antetheca back butt of the forward corner ofillumination installation portion 46 that constitutespillar 8 or formation heat insulating box 2.

That is, thesidewall 24 relative with peristome " コ " shape roughly retainingmember 21 is connected on theillumination installation portion 46 of thepillar 8 that rearward extends and form, and is fixed by not shown screw.On thissidewall 24, be formed with a plurality of slottedholes 26 that extend more longways from top to bottom.This slottedhole 26 is to overlap with the screw hole of the installingplate 20 of describedLED illuminating member 16 and by screwing togather fixing hole, the installation site up and down (direction of arrow along Fig. 4 can change the installation site) that only depends on the length dimension of this slottedhole 26 can changeLED illuminating member 16.

In addition,, be formed with theholding section 27 that is used forclip lamp cover 30, and be formed with the rear of the heat-barrier material 40 that is positioned atpillar 8 at antetheca at the rear wall of the retainingmember 21 that is roughly " コ " shape, and thereflection board 23 that rearward bends with predetermined angular.

Lampshade 30 is made by the colourless transparent material with light transmission that is used for from the outside covers in the retainingmember 21, and utilizes dismountings such as decorating screw to be installed in freely on the retainingmember 21.

According to above-mentioned structure, the installation steps ofLED lighting device 15 are described.At first, retainingmember 21 is installed in the inboard, opening 6 limit of heat insulating box 2.In the present embodiment becauseLED lighting device 15 is installed in the both sides of eachglass door 7, so this retainingmember 21 is installed in preceding two bights ofshowroom 5 and theillumination installation portion 46 of thepillar 8 that rearward extends on.In addition, becausepillar 8 is arranged between theglass door 7,7, back-to-back so two retainingmembers 21 are mounted to that its eachsidewall 24 clips theillumination installation portion 46 that is located at pillar 8.In addition, theLED lighting device 15 that is located at forward corner being installed as the irradiates light that is produced byLED element 17 shines to 5 inboards, showroom.

In addition, the installingplate 20 thatLED element 17 is installed is attached on thesidewall 24 of retainingmember 21, and makes the screw hole of installingplate 20 and slottedhole 26 overlap and fix with screw.Thus, the substrate ofLED lighting device 15 18 is by the installingplate 20 that constitutes with the good material of thermal conductivity and thesidewall 24 of retainingmember 21, is arranged in the mode of heat exchange on the face ofshowroom 5 sides of doorframe 45.As mentioned above, owing to be fixed with theillumination installation portion 46 of thepillar 8 ofsidewall 24, only tilt and form to the central rear ofpillar 8, so theLED element 17 of thisLED lighting device 15 and be not parallel tofront openings 6, but be partial toshowroom 5 slightly and be set up with predetermined angular.

In the present embodiment, a plurality of (4) aforesaidLED illuminating member 16 is installed on the retaining member 21.ThisLED lighting device 15 also can be made of the single ledilluminating member 16 that constitutes across the top and bottom offront openings 6, and can change upper-lower position by installing with slotted hole 26.But, by constituting, not only can reduce production costs by as shown in this embodiment a plurality ofLED illuminating members 16, can also improve processing.

In addition, the reflectingplate 23 of retainingmember 21 is arranged on a side of theglass door 7 of LED illuminating member 16.In addition, in the open side of retainingmember 21, thelampshade 30 that is used for covering from the outsideLED illuminating member 16 is installed.The end dismounting engaging freely of theholding section 27 of the open side of thislampshade 30 by being formed on retainingmember 21 and reflectingplate 23,lampshade 30 is not roughly parallel toglass door 7 thus, but is partial to 5 inboards, showroom slightly.

The control device C of the showcase 1 of present embodiment then, is described with reference to Fig. 6.Control device C in the present embodiment is made of universal microcomputer,light switch 53, the perception that is connected with describedLED lighting device 15 at its input side whether have the people near theilluminance transducer 48 of the force-feeling sensor 11 of this showcase 1, the illumination (ambient illuminance) that is used to detect in the shop that this showcase 1 is installed etc., be used to detect the door on-off switch (door open-close detection apparatus) 49 of open and-shut mode of eachglass door 7 and theindoor temperature transmitter 50 that is used to detect temperature in theshowroom 5.

Illuminance transducer 48 is installed in the position of the influence of the shadow of the peripheral machine of end face etc. for example, outside that is not vulnerable to body 2.In the present embodiment, owing to be provided with a plurality of (3)glass door 7, therefore door on-off switch 49 is corresponding with eachglass door 7, from the front, begins to be provided with successively on-offswitch 49A, a 49B, 49C from theglass door 7 in left side.To narrate in the back about force-feeling sensor 11.

In addition,, be connected with the cooling device R that constitutes by aforesaid compressor, pressure fan etc., and be connected with theLED element 17 and theelectric heater 41 ofLED lighting device 15 respectively at the outlet side of control deviceC.LED element 17 is by converter (イ Application バ-タ) 54 be connected on the control device C.And, at the outlet side of control device C, be connected with and show and to be arranged on the upper front of body 2 and to be used to show temperature in theshowroom 5 and the temperature display part (temperature indicating device) 51 of present operation mode.

At this, shown in the circuit diagram of Fig. 7, force-feeling sensor 11 is connected on the LEDlighting control section 32 that constitutes control device C by theterminal board 31 that the force-feeling sensor connects usefulness.Force-feeling sensor 11 is arranged on the center upper portion front of heat insulating box 2 for example etc. and locates, its inside have force-feeling sensor's itsown power source 33 and perception whether have the people near and the people that opens and closes feels a little 34.Onpower supply 33, be connected topower supply terminal 35, and feel a little 34 both sides, be connected withoutput contact terminal 36 andcommon contact terminal 37 the people.

On the other hand, on the terminal board of being located on showcase 1body 31, be provided with first connectingportion 55, second connectingportion 56 and the 3rd connecting portion 57.On first connectingportion 55, be connected with the power supply and the LEDlighting control section 32 of showcase 1 base side; On second connectingportion 56, be connected with LEDlighting control section 32; On the 3rd connectingportion 57, be connected with the power supply of showcase 1 base side by thelight switch 53 of being located at showcase 1 body.In addition, theLED element 17 ofLED lighting device 15 is in parallel with LEDlighting control section 32, and is connected by DCpower source unit 58 on the power supply of showcase 1 base side.

According to above-mentioned structure, force-feeling sensor 11power supply terminal 35 is connected on first connectingportion 55 ofterminal board 31, and force-feeling sensor 11 output is connected on second connectingportion 56 ofterminal board 31 withcontact terminal 36, and force-feeling sensor 11common contact terminal 37 is connected on the 3rd connectingportion 57 of terminal board 31.Thus,light switch 53 in body 2 one sides is to connect under (ON) state, people by force-feelingsensor 11 feels a little 34 break-make (ON/OFF), can be to the control of switching on of the LEDlighting control section 32 ofLED lighting device 15, and, can carry out break-make (ON/OFF) control toLED lighting device 15 thus based on force-feelingsensor 11 break-make (ON/OFF).In addition, after force-feelingsensor 11 was in connection (ON), when turn-offing (OFF) again, LEDlighting control section 32 was turned off moment of (OFF) from force-feeling sensor 11, for example postponed tens of seconds through the stipulated time, turn-offedLED lighting device 15.

In addition, eachterminal 35,36,37 this force-feeling sensor 11 is not connected under the state ofterminal board 31, promptly under the state of pulling down force-feeling sensor 11, carry out short circuit between second connectingportion 56 by short-circuit line shown in Figure 7 60 being connectedterminal board 31 and the 3rd connectingportion 57, thereby utilize break-make (ON/OFF) control of thelight switch 53 of being located at body 2, can carry out break-make (ON/OFF) control of LED lighting device 15.Therefore, under the situation that is connected to force-feelingsensor 11, feel a little 34 break-make (ON/OFF) control by the people who is located in the force-feeling sensor 11, can carry out break-make (ON/OFF) control ofLED lighting device 15, and under the situation that is not connected to force-feelingsensor 11, by using short-circuit line 60 each connecting portion short circuit ofterminal board 31, only utilize thelight switch 53 of body 2 one sides, can carry out break-make (ON/OFF) control ofLED lighting device 15.

According to above structure, the illumination control of theLED lighting device 15 of the showcase 1 in the present embodiment is described.Control device C at first detects the illumination of (on every side) in the shop that is provided with this showcase 1 byilluminance transducer 48, and according to the definite maximal illumination that produces by theLED lighting device 15 that is arranged onshowroom 5 of this illumination.In the present embodiment, the maximal illumination in theshowroom 5 is defined as detecting according todegree sensor 48 illumination of the big regulation of ambient illuminance that obtains.

In addition, control device C is connected under the state ofterminal board 31 aforesaid force-feeling sensor 11, according to described force-feeling sensor's 11 perception have the people near showcase 1 promptly the someone enter the signal of exporting in the showcase 1 predetermined distance scope, utilize LEDlighting control section 32 to carry out the energising of theLED element 17 of LED lighting device 15.Therefore, as principle, when force-feeling sensor 11 do not perceived the people near the time, theLED element 17 ofLED lighting device 15 is in non-energising, is in the state of turning off the light.

At this moment, whether thelighting control section 32 of control device C has an approaching perception of people according to force-feeling sensor's 11, electrical current/voltage to theLED element 17 ofLED lighting device 15 is controlled, gradually illumination is heightened from the state of turning off the light, reached the maximal illumination of determining according to above-mentioned ambient illuminance at last.

Thus, owing to whether the people is arranged near coming illumination to heighten gradually each theLED element 17 in theillumination showroom 5 according to force-feeling sensor's 11 perception of being located at showcase 1, therefore compare with the situation that theLED element 17 of the high regulation illumination of unexpected usefulness throws light on, can make client's eyes adapt to the brightness of light gradually, the uncomfortable situation of making us such as avoid dazzling the eyes

At this, be fixed on the light that theLED element 17 of each illuminatingmember 16 of thesidewall 24 of retainingmember 21 sends, along partially laterally (withglass door 7 almost parallels) irradiation of rear, both sides of glass door 7.In addition, in the present embodiment, as mentioned above, opening 6 limits of the relative heat insulating box 2 of the light that LEDelement 17 sends tilt and form to rear (showroom 5 one sides) a little.Thus, because the light that LEDirradiation unit 15 sends can shine the front portion that is erected at theshelf 9 in theshowroom 5, therefore the light that thehigh LED element 17 of directive property sends can be radiated at the front portion of shelf 9.Thus, can illuminate the commodity of the especially forefront on theshelf 9 well, the front of the commodity that throw light on effectively.Therefore, can attempt to improve the illuminating effect and the display effect of commodity.

In this case, the LEDlighting control section 32 of control device C is owing to can make eachLED element 17 improve illumination gradually from the state of turning off the light, and with according to around illumination and in the definite maximalillumination illumination showroom 5, therefore, adapt with the brightness around waiting in the shop that is provided with this showcase 1, with the brightness that theLED element 17 of theLED lighting device 15 of determining showcase 1 produces, can avoid and on every side the inharmonious sense of illumination.

Thus, can utilizeLED lighting device 15, can realize improving illuminating effect with thesuitable illumination showroom 5 of throwing light on effectively.

In addition, it is approaching that the LEDlighting control section 32 of control device C has not detected the people according to force-feelingsensor 11, and this begins constantly through after for example tens of seconds of stipulated time certainly, stops to 17 energisings of the LED of describedLED lighting device 15 element, turns off the light in the pass.

Thus, the operating cost that causes surging because therefore control device C, can suppress thatLED lighting device 15 quilts light up as the illumination more than required by, just throwing light on bright illumination withLED lighting device 15 during near showcase 1 as the people.

On the one hand, aforesaid force-feelingsensor 11 perception whether have the people approaching during, perhaps from not perceiving the approaching moment of people, during the stipulated time,LED lighting device 15 is by under the state of lighting, and the LEDlighting control section 32 of control device C is performed illumination.

In this performance illumination, control device C is by the electrical current or the voltage of theLED illumination component 17 of controlLED lighting device 15, and thisLED lighting device 15 is periodically carried out its illumination in above-mentioned maximal illumination with the bright or dark control of turning off the light and changing between the state.In addition, in the present embodiment, as dark state, being meant the state of turning off the light, but being not limited thereto, also can be the dark illumination with certain minimal illumination (the non-state of turning off the light).

Thus, the illumination performing effect that LEDlighting device 15 produces can be improved, the effect of peddling of commodity in theshowroom 5 can be improved.

In addition, be under the illuminating state at aforesaidLED lighting device 15, when opening anyglass door 7, (49A～49C) opens detection according to the door on-off switch 49 of the switching that detects thisglass door 7, control device C controls the electrical current or the voltage of the LED element of theLED lighting device 15 thatshowroom 5 parts of being closed by thisglass door 7 are thrown light on, and the illumination of thisLED lighting device 15 is turned down.In addition, detect correspondingglass door 7 according to door on-off switch 49 and closed, control device C returns to original illumination with the illumination ofLED lighting device 15, is illuminated to above-mentioned maximal illumination this moment.

For example, from the front, when theglass door 7 of the leftmost side is opened, door on-off switch 49A detects thisglass door 7 and is opened, the control device CLED lighting device 15 that will be provided with in view of the above corresponding to thisglass door 7, specifically be 5 front from the showroom, be arranged on the left side forward cornerLED lighting device 15 illumination and clip theLED lighting device 15 that thisglass door 7 is arranged on opposition side with thisLED lighting device 15, promptly from the front, be set in place in the illumination of theLED lighting device 15 in the left side of thepillar 8 in left side and turn down.

Thus, when door on-off switch 49 detectsglass door 7 and is opened, because control device C turns down the illumination ofLED lighting device 15, therefore can alleviate theLED lighting device 15 that covered by theglass door 7 of closing high light, because of the degree that directly enters client's eyes of opening ofglass door 7 to the place ahead ofshowroom 5 irradiation.

Thereby, even client is openingglass door 7, also can suppress to reveal and according to forwards light from theLED lighting device 15 of illumination in theshowroom 5, shine client and the generation that produces unfavorable conditions such as dazzling the eyes.

In this case, control device C can make the illumination gradual change of the on-off action generation of followingglass door 7, also can transition.By gradual change illumination, can relax the inharmonious sense that showcase 1 integral body produces the performance illumination.On the other hand, by transition illumination, the photograph that can separate in early days disappears is covered byglass door 7 because of opening always ofglass door 7 is to the light in 5 the place aheads, showroom, enters client's eyes and the sense of discomfort that produces.

Then, to this showcase 1 when trial run or under the test/trial running mode when safeguarding etc., especially do not describing in illumination control with theLED lighting device 15 under the non-cold pattern of cooling operation.In principle, control device C controls the illumination of aforesaid LED lighting device 15.At this moment, control device C remains on high temperature value with indoor temperature in advance in order to protect theLED element 17 of theLED lighting device 15 that generates heat because of energising, supposes that this indoor temperature reaches to cause the obviously aging or high temperature of fault equally likely possibility of LED lighting device 15.In addition, this high temperature value can be set arbitrarily.

In addition, control device C if this temperature reaches described high temperature value, just controls the electrical current/voltage of theLED element 17 ofLED lighting device 15 according to theindoor temperature transmitter 50 detected temperature of being located in theshowroom 5, and illumination is turned down.

In the present embodiment, illuminance setting in about 50% of maximal illumination.This illumination is not to be defined in this, but according to the detection case of high temperature value,LED lighting device 15 is turned off the light, and can turn down the illumination ofLED lighting device 15 step by step yet.

Thus, can reduce the heats that theLED element 17 itself because of energisingLED lighting device 15 produces.Therefore, in test/trial running mode or non-cold pattern isotype, by still uncolled to the state of stipulating chilling temperature inshowroom 5,LED lighting device 15 illumination reach bright degree, can avoidLED element 17 because of thisLED lighting device 15 to be heated singularly and produce itself abnormal conditions aging or fault.

In addition, control device C uses thetemperature display part 51 of the body 2 that is arranged on showcase 1 to carry out the demonstration of current test/trial running mode or the demonstration of non-cold pattern according to the illumination of turning down (or turning off the light)LED lighting device 15 based on the detection of this high temperature value.

Thus, allow the user understand and currentLED lighting device 15 is controlled to be low-light (level), but not fault causes.

Even aforesaidLED lighting device 15 is carried out illumination control, compare with the present fluorescent lamp that uses as lighting device, theLED element 17 that constitutes thisLED lighting device 15 is anti-in the operation of break-make (ON/OFF), even and under low temperature environment, can guarantee the illumination stipulated therefore can realize suitable illumination control according to break-make (ON/OFF) control.

In addition, owing to than the obvious length of fluorescent lamp, therefore do not need the replacing operation of lighting the service life of LED element 17.Therefore do not need standing replacing parts, perhaps do not need because of changing numerous and diverse operations such as offal treatment that lighting produces.

On the one hand, carry out the control of electrical current/voltage, under the situation that LEDelement 17 is switched on, be provided withsubstrate 18 heatings of thisLED element 17 byLED element 17 to aforesaid LED lighting device 15.This caloric value becomes big greatly with the energising amount.Therefore, in the time of in utilizingLED element 17illumination showrooms 5, this heat is delivered to thegood installing plate 20 of thermal conductivity thatsubstrate 18 is installed and is equipped with on thesidewall 24 of thegood retaining member 21 of the thermal conductivity of this installingplate 20.

In addition, be provided with owing to thissidewall 24 connects withmetal system doorframe 45, so the heat that LEDlighting device 15 produces is delivered to thedoorframe 45 that is used for heat exchange and is provided with.Because thisdoorframe 45 is connected with outside, so the temperature difference in outside air temperature and theshowroom 5 causes the dew that condenses easily.But, as mentioned above,, therefore suppress the dew that condenses on thedoorframe 45 effectively because the heat that can utilizeLED lighting device 15 to sendheats doorframe 45.

Thus, the dew that can avoid condensing on thedoorframe 45 is got wet in theshowroom 5 or the unfavorable condition such as ground that is provided with of showcase 1 takes place.And, by the on-off action ofglass door 7, can avoid bad phenomenon such as dew splashes to take place.

In addition,, be used to heatdoorframe 45, can successfully realize being equipped with the heat radiation of thesubstrate 18 of thisLED element 17, and can prevent or suppressLED lighting device 15 aging or faults by the heat that LEDelement 17 is sent because of energising.And then the cooling effectiveness that can reduce thus in theshowroom 5 worsens.

In aforesaid illumination (illumination) control, if do not carry out illumination in 15 pairs of showrooms ofLED lighting device 5, then the heat that can not send the energising ofLED element 17 is used in thedoorframe 45 of heating.

Therefore, in the present embodiment, when the LED ofLED lighting device 15element 17 no powers, control device C switches on to eachelectric heater 41 that is arranged on together on thesubstrate 18 with thisLED element 17.

Thus, even can not heat under the situation ofdoorframe 45 with the heating of himself because of turning off the light ofLED lighting device 15, heat by theelectric heater 41 that will send because of energising is delivered on the face ofshowroom 5 sides ofdoorframe 45, can suppress the dew that condenses on thedoorframe 45 effectively.

Thereby, even under the situation that LEDlighting device 15 throws light on or turns off the light,, therefore need not as in the past, indoorframe 45, buryelectric heater 41 especially underground owing to can switch on to theLED element 17 or theelectric heater 41 that constitute LED lighting device 15.Particularly,, therefore when utilizingLED lighting device 15 to throw light on, do not need to switch on to heater in addition, can reduce operating cost owing to the face that heatsglass door 7 sides ofdoorframe 45 because of the energising ofLED element 17.

In the above-described embodiments, theelectric heater 41 ofheating doorframe 45 is arranged on thesubstrate 18 that constitutesLED lighting device 15, and heating to be carrying out the face ofshowroom 5 sides of the doorframe 45 that heat exchange method is provided with thissubstrate 18, but is not limited to this, also can be structure as shown in Figure 8.That is, on thesubstrate 18 that constitutesLED lighting device 15, electric heater is not set and only disposes LEDelement 17, and can buryelectric heater 52 underground in the doorframe the inside that constitutes described pillar 8.The face of thiselectric heater 52glass door 7 sides ofheating doorframe 45 when energising utilizes control device C, along with stop energising to the LED ofLED lighting device 15element 17 it is switched on.

Thus, by along with the turning off the light ofLED lighting device 15, theelectric heater 52 of the face ofglass door 7 sides ofheating doorframe 45 is switched on, can be suppressed at the dew that condenses on thedoorframe 45 effectively.

Claims (1)

1. showcase, it to being formed in the body and throw light in the showroom of display commodity, is characterized in that having with the LED lighting device:

Glass door, it opens and closes the opening of closing described showroom freely, and

Metal system doorframe, it is arranged on the described body constituting the opening edge of described showroom, and described glass door is connected on this metal system doorframe;

Described LED lighting device is arranged on heat exchange relationship on the face of described showroom side of described doorframe,

Described LED lighting device has electric heater, when described LED lighting device is turned off the light, switches on to described electric heater.

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