LED bulbTechnical field
The utility model relates to lighting field, particularly a kind of LED bulb.
Background technology
In recent years, because the development of LED industry is rapid, LED lamp progressively replaces traditional lighting.New its illuminator of a product released is similar to incandescent lamp tungsten filament in the market, light efficiency is higher, lighting angle is close to incandescent lamp, but its production efficiency is low, yield rate is low, LED silk as light source in prior art forms by many usually, the heat produced in its luminescence process cannot distribute in time, greatly reduce the luminous efficiency of light source, such as, Shen Qing Publication day is on 04 03rd, 2013, application number be 201210564660.3 Chinese invention patent application disclose a kind of bulb of Sloped rotating Combined Led Light Up silk structure, comprise LED silk 2, combination hub 3, LED silk 2 is inserted in the inclined hole of combination hub 3 respectively, plug socket 3 is fixed in the metallic rod of glass stem, LED silk 2 is only plugged on socket 3 by the bulb of this Sloped rotating Combined Led Light Up silk structure, the heat of LED silk 2 cannot distribute in time, thus cause the accumulation of heat, greatly reduce the light efficiency of LED silk 2.
Utility model content
In view of this, be necessary to provide a kind of good LED bulb of dispelling the heat.
The technical solution adopted in the utility model is: a kind of LED bulb, comprise body and two or more light source board, described light source board is disposed on the end face of this body around the central shaft of this body, the lateral surface of each light source board is provided with LED light source, the lateral surface of each light source board and the end face of this body are arranged in obtuse angle, also comprise heat conduction ring, the bottom of this heat conduction ring and this body thermally coupled, through hole is provided with in the middle part of this heat conduction ring, described light source board is all arranged in the through hole of this heat conduction ring, the through-hole wall of this heat conduction ring and the lateral surface of described light source board thermally coupled.
Compared with prior art, the utility model LED bulb is provided with heat conduction ring, by the inwall of this heat conduction ring and the lateral surface of these light source boards thermally coupled, the heat that these light source boards are produced can be transmitted on this heat conduction ring in time, be dispersed in air through this body subsequently, thus the heat of these LED light source plates is distributed in time, make this LED bulb have the good advantage of heat radiation.
Accompanying drawing explanation
Fig. 1 is the three-dimensional exploded view of the utility model first embodiment LED bulb.
Fig. 2 is the profile after the assembling of LED bulb shown in Fig. 1.
Fig. 3 is front view when not bending bottom light source board in LED bulb shown in Fig. 1.
Fig. 4 is the right view of light source board shown in Fig. 3.
Fig. 5 is the top view of circuit board shown in Fig. 1.
Description of reference numerals:
10 light source board 20 body 30 heat conduction rings
40 circuit board 50 bulb housing 11 LED light sources
12 heat-conducting layer 13 metal electrode 31 through holes
41 jacks
Detailed description of the invention
Below by way of specific embodiment, the utility model is elaborated:
Fig. 1 is the three-dimensional exploded view of the utility model first embodiment LED bulb, this LED bulb comprises body 20 and three light source boards 10, these light source boards 10 are disposed on the end face of this body 20 around the central shaft of this body 20, the lateral surface of each light source board 10 is provided with LED light source 11 (as shown in Figure 3), and the lateral surface of each light source board 10 and the end face of this body 20 are arranged in obtuse angle.Certainly, the quantity of this light source board 10 can be two or more.
Please refer to Fig. 1, Fig. 2, also comprise heat conduction ring 30, bottom and this body 20 of this heat conduction ring 30 are thermally coupled, are provided with through hole 31 in the middle part of this heat conduction ring 30.These light source boards 10 are all arranged in the through hole 31 of this heat conduction ring 30.The bottom of these light source boards 10 is coated with heat-conducting layer 12, through hole 31 inwall of this heat conduction ring 30 and this heat-conducting layer 12 close contact, through hole 31 inwall of this heat conduction ring 30 and the lateral surface of these light source boards 10 thermally coupled.
Please refer to Fig. 1, Fig. 3 and Fig. 4, each light source board 10 is fixed with metal electrode 13 respectively, these metal electrodes 13 are made up of elastomeric material.Each light source board 10 is fixed with two metal electrodes 13, these two metal electrodes 13 are fixed on the medial surface of this light source board 10, and one end of these metal electrodes 13 is electrically connected with the both positive and negative polarity wiring of the LED light source 11 on this light source board 10 respectively.
Please refer to Fig. 1, Fig. 2 and Fig. 5, also comprise circuit board 40, this circuit board 40 is arranged at the end face of this body 20.On this circuit board 40, the metal electrode 13 of these light source boards 10 corresponding is respectively arranged with jack 41, and the bottom of these metal electrodes 13 to be stretched out outside these light source boards 10 and plugged in the jack 41 of this circuit board 40.The bottom of these metal electrodes 13 is connected in these jacks 41 by welding, is formed be electrically connected with this circuit board 40.The bottom of these metal electrodes 13 is bent the lateral surface of these light source boards 10 is abutted with the inwall of this heat conduction ring 30.
Please refer to Fig. 1, also comprise bulb housing 50, the bottom of this bulb housing 50 is fixed on the end face of this body 20, and this bulb housing 50 is located at the periphery of these light source boards 10.
In sum, the utility model LED bulb is provided with heat conduction ring 30, by the inwall of this heat conduction ring 30 and the lateral surface of these light source boards 10 thermally coupled, the heat that these light source boards 10 are produced can be transmitted on this heat conduction ring 30 in time, be dispersed in air through this body 20 subsequently, thus the heat of these LED light source plates 10 is distributed in time, make this LED bulb have the good advantage of heat radiation.In addition, by arranging metal electrode 13 at the back side of these light source boards 10, the even heat on the one hand these light source boards 10 being produced disperses and distributes in time, effectively reduces the operating temperature of these LED light sources 11; On the other hand, during assembling, these light source boards 10 are plugged on this circuit board 40 by the bending of these metal electrodes 13, and pass through close contact these light source boards 10 fastening further of this heat conduction ring 30, make the fixation of these light source boards 10 reliable.And, because the metal electrode 13 at these light source board 10 back sides is made up of elastomeric material, to elastic restoring force be produced after these metal electrodes 13 are bent, the bottom of these light source boards 10 is abutted with through hole 31 elasticity of this heat conduction ring 30, thus effectively give this heat conduction ring 30 by heat trnasfer.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment made, equivalent replacements, improvement etc., all should be included within scope that the utility model protects.