CN101886783A - Spot lamp reflector, spot lamp and head lamp - Google Patents

Abstract

The invention is suitable for the field of lighting, and provides a spot lamp reflector, a spot lamp and a head lamp. The inner surface of the spot lamp reflector is of a paraboloid; the focal length of the paraboloid is between 2.4 and 2.6 mm; the focal point of the paraboloid is a luminous point of a light source; and the optical axis of the light source is overlapped with the central axis of a reflector. The inner surface of the spot lamp reflector is designed as the paraboloid of which the focal length is between 2.4 and 2.6mm; the focal point of the paraboloid is the luminous point of the light source; the optical axis of the light source is overlapped with the central axis of the reflector; and light spots formed by the light which is emitted from the light source and is emitted in parallel after being reflected by the reflector have the characteristics of uniformity, small radiant angle and perfect spotlight effect, so the spot lamp reflector can particularly serve as the reflector of the head lamp.

Description

A kind of spotlight reflector, spotlight and head lamp

Technical field

The invention belongs to lighting field, relate in particular to a kind of spotlight reflector, spotlight and head lamp.

Background technology

Existing head lamp generally adopts bulb as light source, and cost is low, but power consumption is bigger, and cruising time is shorter, and has danger such as easy fragmentation.In addition, existing head lamp volume is bigger, and anti-shake performance is poor, and industrial and mineral personnel carry it, has certain limitation.

LED has been widely used in lighting field as a kind of energy-conservation, reliable light source, replaces bulb and other non-led light sources gradually.As shown in Figure 1, the light that led light source sends hot spot after existing spotlight reflector reflection is even inadequately, and spotlight effect is relatively poor.

Summary of the invention

The purpose of the embodiment of the invention is to provide a kind of spotlight reflector, and it is even inadequately to be intended to solve light hot spot after existing reflector reflection that light source sends, the problem that spotlight effect is relatively poor.

The embodiment of the invention is achieved in that a kind of spotlight reflector, and its inner surface is parabolic, and described paraboloidal focal length is 2.4～2.6mm, and described paraboloidal focus is the luminous point of light source, and the optical axis of described light source overlaps with the axis of described reflector.

Another purpose of the embodiment of the invention is to provide a kind of spotlight, and described spotlight comprises: reflector and the light source of being located at the end of described reflector, the inner surface of described reflector are parabolic, and described paraboloidal focal length is 2.4～2.6mm; The luminous point of described light source is positioned at described paraboloidal focus place, and the optical axis of described light source overlaps with the axis of described reflector.

Another purpose of the embodiment of the invention is to provide a kind of head lamp, and described head lamp adopts above-mentioned spotlight.

The embodiment of the invention is designed to the parabola that focal length is 2.4～2.6mm with the inner surface of spotlight reflector, paraboloidal focus is the luminous point of light source, the optical axis of light source is overlapped with the axis of reflector, the light that light source the sends hot spot that parallel outgoing forms after the reflector reflection is even, luminous angle is little, the light efficiency height, spotlight effect is good, can be used as the reflector of head lamp especially.

Description of drawings

Fig. 1 is the hot spot design sketch of the spotlight that provides of prior art;

Fig. 2 is the stereogram of the spotlight that provides of the embodiment of the invention;

Fig. 3 is support bracket fastened stereogram;

Fig. 4 is the front view of the spotlight reflector that provides of the embodiment of the invention;

Fig. 5 is the cutaway view of the spotlight reflector that provides of the embodiment of the invention;

Fig. 6 is the index path of the LED spotlight that provides of the embodiment of the invention;

Fig. 7 is the hot spot design sketch of the LED spotlight that provides of the embodiment of the invention;

Fig. 8 is the distribution curve flux figure of the LED spotlight that provides of the embodiment of the invention.

The specific embodiment

In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.

The embodiment of the invention is designed to the parabola that focal length is 2.4～2.6mm with the inner surface of spotlight reflector, paraboloidal focus is the luminous point of light source, the optical axis of light source is overlapped with the axis of reflector, the light that light source the sends hot spot that parallel outgoing forms after the reflector reflection is even, luminous angle is little, the light efficiency height, spotlight effect is good.

The inner surface of the spotlight reflector that the embodiment of the invention provides is for parabolic, and described paraboloidal focal length is 2.4～2.6mm, and described paraboloidal focus is the luminous point of light source, and the optical axis of described light source overlaps with the axis of described reflector.

The spotlight that the embodiment of the invention provides comprises: reflector and the light source of being located at the end of described reflector, the inner surface of described reflector are parabolic, and described paraboloidal focal length is 2.4～2.6mm; The luminous point of described light source is positioned at described paraboloidal focus place, and the optical axis of described light source overlaps with the axis of described reflector.

The head lamp that the embodiment of the invention provides adopts above-mentioned spotlight.

Below specific implementation of the present invention is elaborated as light source with LED.

Shown in Fig. 2～5, the LED spotlight that the embodiment of the invention provides comprisesreflector 1 and is located at the LED2 of reflector end.The inner surface ofreflector 1 is parabolic, and this parabola satisfies following equation:

y＝4px²(2.4≤p≤2.6)

Wherein p is paraboloidal focal length, and focal length p is 2.4～2.6mm.

Above-mentioned reflector has anecking end 11 and opening end outwardly 12, and LED2 is fixedly arranged on thenecking end 11 ofreflector 1 by fixed support 4.Adjust the position between LED2 and thereflector 1, the optical axis of LED2 is overlapped with the axis ofreflector 1.

In the embodiment of the invention, thenecking end 11 ofreflector 1 is provided with thecircular hole 13 that diameter is 4～6mm, and the center of circle ofcircular hole 13 is reflector 1 a paraboloidal focus, also is the center ofnecking end 11, and the luminous point of LED2 overlaps with the center of circle of this circular hole 13.Theopening end 12 ofreflector 1 is provided with a circular open 14 concentric with above-mentionedcircular hole 13, and the diameter of this circular open 14 is 34～38mm.The length ofreflector 1 is that the distance between itsopening end 12 and thenecking end 11 is 30～32mm.Hence one can see that, and the size of thisspotlight reflector 1 is less, is specially adapted to portable series products.

Said fixingsupport 4 is pierce one's ears 41 aflat board 40 of a band, and dull and stereotyped 40 side is provided with thejump ring 42 that is used for clamping LED2, and thisjump ring 42 is a C type jump ring.During installation,jump ring 42 blocks thealuminium base 20 of LED2, andaluminium base 20 fits tightly with dull and stereotyped 40, helps the LED2 heat radiation.LED2 is as a whole with 4 one-tenth of fixed supports, pass to pierce one's ears byscrew 5 and 41 spin with the double-screw bolt 15 of being located atreflector opening end 12 back sides, the optical axis of LED2 is overlapped with the axis ofreflector 1, the luminous point of LED2 is positioned at the center of circle ofcircular hole 13, thereby each parts is assembled into spotlight easily, the LED accurate positioning.

Usually, during spotlight work, temperature is higher in it.Above-mentionedreflector 1 is injection molded by exotic material, and injected plastics material is preferably ABS777D, and its heatproof can reach 100 °.This LED spotlight works long hours, andreflector 1 can deformation, and the hot spot that the light that LED2 sends reflects to form throughreflector 1 has consistently improved the stability of this spotlight illumination.

In embodiments of the present invention, the inner surface vacuum plating reflectivity ofreflector 1 is at least 75% specular aluminium, to improve the light efficiency of spotlight.

The embodiment of the invention choose the commercially available luminous angle of CREE (section is sharp) company be 110～130 ° XPELED as light source, whereinreflector 1 paraboloidal focal length is 2.5mm, the diameter of necking endcircular hole 13 is 5mm, the center of circle ofcircular hole 13 overlaps with paraboloidal focus; The diameter of opening end circular open 14 is 36mm, and the length ofreflector 1 is 30mm, and the optical axis of LED2 overlaps with the axis of reflector 1.As shown in Figure 6, the light that sends of LED2 is through the parallel outgoing ofreflector 1 reflection.Through test, the result is as follows:

As shown in Figure 7, the light of parallel outgoing forms uniform hot spot, and this hot spot is less, and its illumination has improved more than 20% than existing product, the light efficiency height, and spot center the cavity can not occur, and spotlight effect is comparatively desirable.

As shown in Figure 8, the luminous angle of LED spotlight is 5 ± 1 °, and the uniformity of hot spot is high in this luminous angle.

The embodiment of the invention is designed to the parabola that focal length is 2.4～2.6mm with the inner surface of spotlight reflector, paraboloidal focus is the luminous point of light source, the optical axis of light source is overlapped with the axis of reflector, the light that light source the sends hot spot that parallel outgoing forms after the reflector reflection is even, luminous angle is little, the light efficiency height, spotlight effect is good, can be used as the reflector of head lamp especially.This reflector is injection molded by exotic material, and the hot spot that the light that light source is sent forms after the reflector reflection has consistently improved the stability of this spotlight illumination.In addition, the inner surface vacuum plating reflectivity of reflector is at least 75% specular aluminium, to improve the light efficiency of spotlight.

The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.

Claims (10)

1. a spotlight reflector is characterized in that, the inner surface of described reflector is parabolic, and described paraboloidal focal length is 2.4～2.6mm, and described paraboloidal focus is the luminous point of light source, and the optical axis of described light source overlaps with the axis of described reflector.

2. spotlight reflector as claimed in claim 1 is characterized in that, described reflector have a necking end and an opening end outwardly, described necking end is provided with the circular hole that diameter is 4～6mm, the center of circle of described circular hole is described paraboloidal focus.

3. spotlight reflector as claimed in claim 2 is characterized in that, described opening end is provided with a circular open concentric with described circular hole, and the diameter of described circular open is 34～38mm.

4. spotlight reflector as claimed in claim 3 is characterized in that, the distance between described opening end and the necking end is 30～32mm.

5. spotlight reflector as claimed in claim 4 is characterized in that, described paraboloidal focal length is 2.5mm, and the diameter of described circular hole is 5mm, and the diameter of described circular open is 36mm, and the distance between described opening end and the necking end is 30mm.

6. spotlight reflector as claimed in claim 1 is characterized in that, the inner surface of described reflector is coated with reflectivity and is at least 75% specular aluminium, and described reflector is injection molded by materials A BS777D.

7. spotlight comprises: reflector and be located at the light source of the end of described reflector is characterized in that described reflector adopts as each described spotlight reflector of claim 1 to 6.

8. spotlight as claimed in claim 7 is characterized in that, described light source is LED, and the luminous angle of described LED is 110～130 °; The luminous point of described LED is positioned at described paraboloidal focus place, and the optical axis of described LED overlaps with the axis of described reflector.

9. spotlight as claimed in claim 8 is characterized in that, described LED is fixedly arranged on the end of described reflector by fixed support, and described fixed support is the flat board that a band is pierced one's ears, and the side of described flat board is provided with the jump ring that is used for the described LED of clamping.

10. a head lamp is characterized in that, described head lamp adopts spotlight as claimed in claim 9.

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