A kind of radiator structure of LED panel light
Technical field
The utility model relates to the utilization field of LED panel light, the good cooling mechanism of especially a kind of heat dispersion.
Background technology
The heat radiation of present existing LED panel light, the problem of two aspects of existence:
1, the area of dissipation of panel light housing is little, the area of dissipation of average every watt of power is no more than 30 square centimeters (at least 45 square centimeters of actual needs), the temperature rise too high (above 25 ℃) of housing causes dispelling the heat, when environment temperature was 30 ℃, the temperature of housing will be above 55 ℃ (only allowing 50 ℃) under the normal condition;
2, the thermal resistance between housing and lamp bar substrate is excessive, causes the heat of lamp bar substrate to go above being not easy to be transmitted to housing.The present used thermal conductive silicon film of panel light, because of size thicker more loose, thermal resistance own is bigger, in addition, because housing is when assembling (when locking at two ends), the middle part can outwards produce bending to a certain degree, causes the thermal conductive silicon film at middle part that lamp bar substrate and housing are separated, produce the gap, the heat of aluminium base is gone above can not effectively being transmitted to housing by the thermal conductive silicon film.
More than 2 points, the junction temperature of led light source will be raise greatly, the temperature that surpass to allow, thereby accelerate the speed of LED light decay, its life-span is shortened greatly.
The utility model content
At the defective of last prior art, technical purpose of the present utility model is the radiator structure for the LED panel light that a kind of perfect heat-dissipating is provided.
For realizing above-mentioned technical purpose, the radiator structure of a kind of LED panel light of the present utility model, described LED panel light comprises LGP, housing, lamp bar substrate, bonnet and is installed in LED lamp on the lamp bar substrate that described radiator structure is characterised in that there is the multiple tracks groove in the outside of described housing.
As further improving, be connected with screw between described housing and the lamp bar substrate, and on its contact-making surface, smear heat-conducting silicone grease.
Described housing is the aluminium housing.
Above structure, the heat that led light source is produced is able to effective conduction, thereby the LED junction temperature is reduced greatly, guarantees that finally LED reaches specified service life.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:
Fig. 1 is the structural framing figure of the LED panel light in the utility model specific embodiment.
Fig. 2 is the housing and the lamp bar substrate structure combining frame diagram of LED panel light.
Fig. 3 is the frame structure frame diagram of LED panel light
The specific embodiment
As illustrated in fig. 1 and 2, the LED panel light comprises LGP 1, housing 2, lamp bar substrate 3, bonnet 4 and is installed in LED lamp 6 on the lamp bar substrate that wherein lamp bar substrate 3 fits together with housing 2.
As shown in Figure 3, the outer surface of housing changes the multiple tracks plough groove type into by plane formula, and groove 5 has increased the area of dissipation of housing, does not change the appearance and size of product like this, but has increased cooling surface area greatly, has increased by one times than original area.This makes the cooling surface area of average every watt of power surpass 60 square centimeters, and temperature rise was no more than 15 ℃ when light fixture was lighted, and when environment temperature is 30 ℃, the temperature of aluminium housing will be no more than 45 ℃, meet led light source is no more than 50 ℃ to the radiator temperature requirement.
As shown in Figure 2, be connected with screw between housing 2 and the lamp bar substrate 3, and on the contact-making surface of the two, smear heat-conducting silicone grease, (the heat-conducting silicone grease coating is thin in order to reduce thermal resistance, thermal resistance is little, is better than the thermal conductive silicon film) owing between aluminium base and the housing very big thrust is arranged, the heat-conducting silicone grease gap of having eliminated contact-making surface is again simultaneously gone above being transmitted to the aluminium housing enough swimmingly so can guarantee heat energy on the aluminium base.
Above structure, the heat that led light source is produced is able to effective conduction, thereby the LED junction temperature is reduced greatly, guarantees that finally LED reaches specified service life.