LED light fixture with two heat dissipation channels
Technical field
The utility model relates to the led lighting technical field, is specifically related to a kind of LED light fixture with two heat dissipation channels.
Background technology
LED (Light-emitting diode) can send the light of certain brightness through the adjusting of electric current or voltage, itself has function shock-resistant, anti-vibration again, and simultaneously, glow color is very abundant, and the transition of color is also very soft; LED does not contain harmful mercury metal, does not contain infrared ray and ultraviolet ray, radiationless pollution, very environmental protection in the spectrum; In addition, the life-span of LED is long especially, and theoretical life value is more than 50,000 hours, is 20-30 times of ordinary incandescent lamp, is more than 10 times of conventional fluorescent lamps life-span.Therefore LED is as a kind of energy-saving and environmental protection, light source is widely used in various fields efficiently.But present LED lamp all is to distribute the heat that LED produces through fin, a lot of LED lamps is also arranged through optimizing the structure of radiator, increases effective heat exchange area and dispels the heat.Though this method has played certain function,, still can not reach better radiating effect because the heat dissipation channel of light fixture is comparatively single.
The utility model content
In order to address the above problem, the utility model provides a kind of simple in structure, LED light fixture that radiating effect has two heat dissipation channels preferably.
LED light fixture with two heat dissipation channels; Comprise the lamp holder, connector, driving PCB plate, heat radiation cup, a plurality of LED lamp pearl that are connected with power supply; The first end of said connection is connected with lamp holder; The connector other end is connected with the heat radiation cup, and said driving PCB plate is between connector and heat radiation cup, and said lamp holder, driving PCB plate, LED lamp pearl are electrically connected; Said heat radiation cup comprises a plurality of radiating fins, and a plurality of said radiating fins form the heat radiation cup shell of cup-shaped, are provided with the radiating groove that can ventilate between adjacent two radiating fins, heat dissipation channel around radiating groove forms; Be provided with the LED mount pad in the said heat radiation cup, the center of LED mount pad is provided with the heat radiation through hole that a plurality of and said radiating groove is communicated with, and the heat radiation through hole is communicated with formation center heat dissipation channel with radiating groove; Said LED lamp pearl is installed on the LED mount pad, and is uniformly distributed in around the heat radiation through hole.
Wherein, said LED light fixture also comprises the PC cover of protecting LED lamp pearl and LED mount pad, and said PC cover is fixed in the heat radiation cup, and PC is covered with the air vent that matees with said heat radiation through hole.
Wherein, said LED light fixture also comprises the PCB protection box of protection driving PCB plate, and said PCB protection box is between said connector and heat radiation cup.
Wherein, the number of said heat radiation through hole is 3 or 4.
Wherein, the number of said LED lamp pearl is 3 or 4.
The beneficial effect of the utility model is: the LED light fixture with two heat dissipation channels; Comprise the lamp holder, connector, driving PCB plate, heat radiation cup, a plurality of LED lamp pearl that are connected with power supply; The first end of said connection is connected with lamp holder; The connector other end is connected with the heat radiation cup, and said driving PCB plate is between connector and heat radiation cup, and said lamp holder, driving PCB plate, LED lamp pearl are electrically connected; Said heat radiation cup comprises the radiating fin of a plurality of rounded distributions, and said radiating fin forms the heat radiation cup shell of cup-shaped, is provided with the radiating groove that can ventilate between adjacent two radiating fins; Be provided with the LED mount pad in the said heat radiation cup, LED mount pad center is provided with the heat radiation through hole that a plurality of and said radiating groove is communicated with; Said LED lamp pearl is installed on the LED mount pad, and is uniformly distributed in around the heat radiation through hole.
The heat radiation through hole of the utility model is communicated with center heat dissipation channel of formation with radiating groove; And radiating groove itself can be used as a heat dissipation channel all around; This inside and outside pair of heat dissipation channel design makes the radiating effect of LED light fixture better, has effectively prolonged the service life of light fixture.
Description of drawings
Fig. 1 is the structural representation of the LED light fixture with two heat dissipation channels of the utility model.
Fig. 2 is the decomposition texture sketch map of Fig. 1.
Fig. 3 is the front view of Fig. 1.
Fig. 4 is the axial section view of Fig. 3.
Description of reference numerals is following:
1-lamp holder; 2-connector;
3-driving PCB plate; 4-PCB protection box;
5-heat radiation cup; 6-LED lamp pearl;
7-PC cover; 51-radiating fin;
52-radiating groove; 53-LED mount pad;
54-heat radiation through hole; 71-air vent.
The specific embodiment
For the purpose, technical scheme and the advantage that make utility model is clearer,, the utility model is further elaborated below in conjunction with accompanying drawing and embodiment.
Referring to Fig. 1 to Fig. 4; LED light fixture with two heat dissipation channels; Comprise the lamp holder 1, connector 2, driving PCB plate 3, heat radiation cup 5, a plurality of LED lamp pearl 6 that are connected with power supply, said connector 2 one ends are connected with lamp holder 1, and connector 2 other ends are connected with heat radiation cup 5; Said driving PCB plate 3 is between connector 2 and heat radiation cup 5, and said lamp holder 1, driving PCB plate 3, LED lamp pearl 6 are electrically connected; Said heat radiation cup 5 comprises a plurality of radiating fins 51, and a plurality of said radiating fins 51 form the heat radiation cup shell of cup-shaped, and the LED light fixture configuration design of cup-shaped is brief light and handy, attractive and durable, and the cup-like structure shock resistance is stronger.Be provided with the radiating groove 52 that can ventilate between adjacent two radiating fins 51, heat dissipation channel around radiating groove 52 forms; Radiating groove 52 has guaranteed that air convection current around heat radiation cup 5 take away the light fixture heat.Be provided with LED mount pad 53 in the said heat radiation cup 5, the center of LED mount pad 53 is provided with the heat radiation through hole 54 that a plurality of and said radiating groove 52 is communicated with, and heat radiation through hole 54 is communicated with formation center heat dissipation channel with radiating groove 52; Said LED lamp pearl 6 is installed on LED mount pad 53, and is uniformly distributed in around the heat radiation through hole 54, and the even distribution of LED lamp pearl 6 has guaranteed uniform irradiates light.The quantity of radiating fin 51 can be 20,30,40 etc.
The heat radiation through hole 54 of the utility model is communicated with center heat dissipation channel of formation with radiating groove 52; And radiating groove 52 itself can be used as a heat dissipation channel all around; This inside and outside pair of heat dissipation channel design makes the radiating effect of LED light fixture better, has effectively prolonged the service life of light fixture.
Wherein, said LED light fixture comprises that also the PC of protection LED lamp pearl 6 and LED mount pad 53 covers 7, and said PC cover 7 is fixed in heat radiation cup 5, and PC cover 7 is provided with the air vent 71 that matees with said heat radiation through hole 54.PC cover 7 is a diffuser, under the prerequisite that does not influence light, prevents the intrusion of rainwater, dust etc., is provided with air vent 71 in heat radiation through hole 54 corresponding positions simultaneously, makes air reduce the temperature of LED light fixture from air vent 71 through the circulation of center heat dissipation channel.
Wherein, said LED light fixture also comprises the PCB protection box 4 of protection driving PCB plate 3, and said PCB protection box 4 is between said connector 2 and heat radiation cup 5.Because driving PCB plate 3 damages under the influence of extraneous factors such as dust accumulation, humidity, corrosion easily, institute thinks that it is provided with a PCB protection box 4 specially, has guaranteed the safety of pcb board effectively, has prolonged the life-span of LED light fixture.
Wherein, the number of said heat radiation through hole 54 is 3 or 4.
Wherein, the number of said LED lamp pearl 6 is 3 or 4.Consider the heating situation of light fixture and the brightness demand of light fixture, the LED lamp pearl 6 of 3 or 4 6W is installed, power is bigger, has satisfied the demand of all types of public places illumination.
Above content is merely the preferred embodiment of the utility model; For those of ordinary skill in the art; According to the thought of the utility model, the part that on the specific embodiment and range of application, all can change, this description should not be construed as the restriction to the utility model.