A kind of LED light fixture
Technical field
The utility model relates to a kind of LED light fixture.
Background technology
Light fixture, refers to energy printing opacity, distribution and the photodistributed utensil of change light source, comprises and except light source, is useful on the fixing and required whole parts and components of protection light source, and be connected necessary circuit annex with power supply.In order to improve the utilization rate of light fixture to light source, conventional lamp is irradiated opposite face at light source and is had additional reflector, by reflector, light source is converged and emitted, for example, for the Halogen lamp LED of the illuminating lamp of automobile, it is to utilize spot light by reflector by irradiation out.Yet because LED light source light-emitting area is larger, the light irradiating does not out have fixed light shape, light is easy to inject human eye, causes light pollution, even causes traffic accident.In addition, what adopt due to the light source of common LED light fixture is the area source of spot light or less light-emitting area, while improving light intensity, and inner integrated heating, lamp temperatures is very high, and lamp life is extremely short.
Summary of the invention
Based on this, the utility model is to overcome the defect of prior art, and is provided a kind of service life that can improve light fixture, forms fixed light shape, avoids the LED light fixture of light pollution.
Its technical scheme is as follows: a kind of LED light fixture, comprise lamp body, on described lamp body, there is LED area source, also comprise lampshade, described lampshade has for covering cover mouth and the light-emitting window of described LED area source, on described lampshade madial wall, cover reflectorized material and form the first reflective surface, the area of LED area source is little described in the Area Ratio of described light-emitting window.
Below further technical scheme is described:
Preferably, between the light-emitting window of described lampshade and described cover mouthful, be filled with transparent silica gel.
Preferably, the shape of described cover mouth and the shape of described LED area source are suitable.
Preferably, the shape of described cover mouthful is larger than the shape of described LED area source, covers reflectorized material and form the second reflective surface between described LED area source and described cover mouth on corresponding described lamp body.
Preferably, described light-emitting window is connected and forms with second channel section by first passage section with the passage between described cover mouth, and described first passage section is straight section, and described second channel section is the expanding reach gradually towards cover mouth.
Preferably, what be connected with described lamp body heat conduction has a radiator structure, and described radiator structure overcoat has sleeve, offers louvre on sleeve.
Below the principle of aforementioned techniques scheme, effect etc. are described:
The utility model covers LED area source with lampshade, on lampshade madial wall, reflectorized material is set, on lampshade, offer the little light-emitting window of Area Ratio LED area source, the light that LED area source produces arrives light-emitting window by direct projection and reflection, by light-emitting window, penetrated, the light source optical path producing by changing LED area source, when light-emitting window more hour, the utilizing emitted light producing is the equal of the spot light with direction of illumination, this light illumination is effective, utilizing emitted light has light shape, when especially automobile lamp adopts LED light fixture of the present invention, because utilizing emitted light has light shape, travel radiation response is good, light can directly not injected in passerby's eyes.The excess Temperature producing while simultaneously avoiding small size light source luminescent to irradiate affects the LED lamp life-span.
Accompanying drawing explanation
Fig. 1 is fitting structure schematic diagram described in the utility model embodiment;
Fig. 2 is the front view of lampshade described in the utility model embodiment;
Fig. 3 is the rearview of lampshade described in the utility model embodiment;
Fig. 4 is the cutaway view of wherein a kind of embodiment at the A-A place of Fig. 2;
Fig. 5 is wherein a kind of embodiment cutaway view at the A-A place of Fig. 2;
Fig. 6 is wherein a kind of embodiment cutaway view at the A-A place of Fig. 2.
Description of reference numerals:
10, lamp body, 20, LED area source, 30, keeper, 40, wire guide, 50, sleeve, 51, louvre, 60, lampshade, 61, light-emitting window, 62, cover mouthful, 63, first passage section, 64, second channel section.
The specific embodiment
Below embodiment of the present utility model is elaborated:
As shown in Figure 1, LED light fixture described in the utility model, comprises lamp body 10, on described lamp body 10, has LED area source 20, also comprises lampshade 60.As shown in Figure 2,3, described lampshade 60 has for covering cover mouth 62 and the light-emitting window 61 of described LED area source 20, covers reflectorized material and form the first reflective surface on described lampshade 60 madial walls.If Fig. 4 is to as shown in Fig. 6, they be described lampshade at the cutaway view at A-A place, the area of LED area source 20 is little described in the Area Ratio of described light-emitting window 61.
The utility model covers LED area source 20 with lampshade 60, on lampshade 60 madial walls, reflectorized material is set, on lampshade 60, offer the light-emitting window 61 that Area Ratio LED area source 20 is little, as required light-emitting window 61 positions can be set flexibly, the light that LED area source 20 produces arrives light-emitting window 61 by direct projection and reflection, by light-emitting window 61, penetrated, the light source optical path producing by changing LED area source 20, luminous the converging by small size light-emitting window 61 of large-area LED area source 20 irradiated, when light-emitting window 61 more hour, be the equal of the spot light with direction of illumination, this light illumination is effective, utilizing emitted light has light shape, when especially automobile lamp adopts LED light fixture of the present invention, because utilizing emitted light has light shape, travel radiation response is good, light can directly not injected in passerby's eyes, can reduce traffic accident occurs.The excess Temperature producing while simultaneously avoiding small size light source luminescent to irradiate affects the LED lamp life-span.
As shown in Figure 1, in the present embodiment, have wire guide 40 on lamp body 10, power supply is powered to lamp body 10 by wire guide.What be connected with described lamp body 10 heat conduction has a radiator structure, and wherein radiator structure comprises radiating copper sheet and the fan being connected with radiating copper sheet, and radiating copper sheet is connected with lamp body 10 heat conduction, and the heat that lamp body 10 is produced is passed to radiating copper sheet, through fan auxiliary heat dissipation.Described radiator structure overcoat has sleeve 50, offers louvre 51 on sleeve 50, with sleeve 50, radiating copper sheet and fan is wrapped up, and makes lamp body 10 overall structure better appearance.In the present embodiment, the shape of described cover mouth 62 is larger than the shape of described LED area source 20, on described lamp body 10 corresponding between described LED area source 20 and described cover mouthfuls 62, cover reflectorized material and form the second reflective surface, the light source that described LED area source 20 produces constantly reflects and launches by light-emitting window 61 in the first reflective surface and the second reflective surface, reduce the loss of light in lampshade 60 internal reflection processes as far as possible, strengthen the radiation response of light-emitting window 61.In an embodiment, the shape of described cover mouth 62 and the shape of described LED area source 20 are suitable therein.In the present embodiment, lamp body 10 is provided with keeper 30, by setting up keeper 30, can prevent lamp body 10 rotations, avoids affecting radiative light path.
As shown in Figure 6, described light-emitting window 61 forms for being connected with second channel section 64 by first passage section 63 with the passage between described cover mouth 62, and described first passage section 63 is straight section, and passage internal diameter remains unchanged, and radiative smooth shape is fixed.Passage in described second channel section 64 is the expanding reach gradually towards cover mouth, and internal diameter expands gradually towards cover mouthful 62 directions.Therein in a kind of embodiment, between the light-emitting window 61 of described lampshade 60 and described cover mouthfuls 62, be filled with transparent silica gel, transparent silica gel is the equal of optical fiber, can reduce the light decay in lampshade 60, enhancing illuminating effect.
The above embodiment has only expressed the specific embodiment of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.