Background technology
LED (Light Emitting Diode, light emitting diode) is a kind of semiconductor devices that electric energy can be converted into visible light.
The LED illumination is the new industry that grew up in recent years.Compare with traditional osram lamp, osram lamp is to make the filament heating until luminous with big electric current, and LED only needs minimum electric current just can inspire the quite high light of brightness.
Along with the development of area source, LED replaces the fluorescent lamp that tradition is applied to area source gradually, becomes the light source device of area source.
Fig. 1 is a LED area source common in the prior art.This area source is made up of driving governor 12 and light-emitting area 11, light-emitting area 11 is by being unit with red, green, blue LED15,16,17 each one group of being formed, according to arranged in array mode at PCB (Printed Circuit Board, printed circuit board (PCB)) on 14, then this pcb board is fixed on the base plate 13, pcb board links to each other with the driving governor 12 of outer setting by lead 18.
This shows that existing LED area source is relatively more dull in form in outward appearance, separates between drive control component and the light-emitting area usually, makes that the overall appearance of LED area source is relatively poor.In addition, when the light-emitting area of LED area source needs when very big, the spacing between the LED on the PCB is arranged and will be become big, and this will cause the uniformity of luminance of light-emitting area to reduce, and perhaps will increase the thickness of area source.
The utility model content
In view of this, the utility model provides a kind of LED area source, improves the overall appearance effect of LED area source, makes that the overall structure of LED area source is compact more, improves the uniformity of LED surface source luminescence.
The utility model embodiment provides a kind of LED area source, comprising: the luminous driving governor of LED in LED luminescence unit and the described LED luminescence unit of driving; Wherein, described LED luminescence unit is set around the described driving governor.
Preferably, described LED luminescence unit specifically comprises:
The surface is provided with the printing board PCB of evenly distributed LED, and described PCB is set to the horizontal structure of hollow; Described driving governor is arranged at the hollow part of described PCB.
Preferably, described LED luminescence unit specifically comprises:
The surface is provided with the PCB of evenly distributed LED, and described PCB is set to the cylindrical body structure, and described LED is arranged at the inwall of described cylindrical body structure, and described driving governor is arranged at the inside of described cylindrical body structure.
Further, described PCB bottom surface is provided with reflective groove.
Further, described cylindrical body inside configuration is provided with the LGP of middle part hollow out, and described driving governor is arranged at the hollow out position of described LGP.
Further, the side at the bottom of described LGP and middle hollow out place is provided with reflector.
Further, be provided with the light diffusing sheet of middle part hollow out above the described LED luminescence unit.
Further, the hollow out position of described light diffusing sheet is provided with the cover plate of being convenient to cover described driving governor.
Preferably, described lid surface perforate, described perforate are used to place the inductive probe that connects described driving governor.
Compare with prior art, the technical scheme that the utility model provides proposes a kind of new area source structure, the luminous driving governor of LED becomes one in building block with the LED area source---LED luminescence unit and the described LED luminescence unit of driving, thereby make whole LED area source structure compact more, compare with traditional LED area source, the space structure that part is provided with LED is used to be provided with driving governor, therefore, LED arranges closelyr, makes that the exiting surface of LED area source is more even.
The specific embodiment
A lot of details have been set forth in the following description so that fully understand the utility model, but the utility model can also adopt other to be different from alternate manner described here and implement, those skilled in the art can do similar popularization under the situation of the utility model intension, so the utility model is not subjected to the restriction of following public specific embodiment.
Secondly, the utility model is described in detail in conjunction with schematic diagram, when the utility model embodiment is described in detail in detail; for ease of explanation; the profile of expression device architecture can be disobeyed general ratio and be done local the amplification, and described schematic diagram is example, and it should not limit the scope of the utility model protection at this.The three dimensions size that in actual fabrication, should comprise in addition, length, width and the degree of depth.
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described.
With reference to Fig. 2, show a kind of LED area source that the utility model embodiment provides, described device comprises: the luminous driving governor 202 of LED in LED luminescence unit 201 and the described LED luminescence unit of driving; Wherein, around the described driving governor 202 described LED luminescence unit 201 is set.
As seen, the utility model embodiment provides a kind of new area source structure, the luminous driving governor of LED becomes one in building block with the LED area source---LED luminescence unit and the described LED luminescence unit of driving, thereby make whole LED area source structure compact more, compare with traditional LED area source, the space structure that part is provided with LED is used to be provided with driving governor, therefore, LED arranges closelyr, makes that the bright dipping of LED area source is more even.
The LED area source that provides in the technical solutions of the utility model in the specific implementation, its building block LED luminescence unit has two kinds of implementations.Below in conjunction with accompanying drawing each implementation is specifically described.
With reference to figure 3, the structural representation of a kind of LED luminescence unit embodiment that provides for the utility model.This LED luminescence unit 201 specifically comprises: the surface is provided with the printing board PCB 2011 of evenly distributed LED2010, and described PCB2011 is set to the horizontal structure of hollow; Described driving governor 202 is arranged at the hollow part of described PCB2011.
Among this embodiment, described PCB2011 can also can comprise independently PCB of multi-disc for the PCB of monolithic middle part hollow out.In the specific implementation, the shape of PCB middle part hollow out can be provided with according to the practical application scene, for example: square, circle etc.
With reference to figure 4, be the structural representation of the another kind of LED luminescence unit of the utility model embodiment.This LED luminescence unit 201 specifically comprises: the surface is provided with the PCB2012 of evenly distributed LED2010, described PCB2012 is set to the cylindrical body structure, described LED2010 is arranged at the inwall of described cylindrical body structure, and described driving governor 202 is arranged at the inside of described cylindrical body structure.
Among this embodiment, the actual peripheral side that is arranged on driving governor of LED2010 in order to strengthen the emergent light of LED2010, is provided with reflector 2013 in the bottom surface of PCB2012 usually.In addition, the LGP 2014 of hollow out in the middle part of the cylindrical body inside configuration that PCB2012 surrounded is provided with, described driving governor 202 is arranged at the hollow out position of described LGP 2014.Can also reflector 2013 be set in the bottom and the side, hollow out position of described LGP 2014, thus will be in the light reflected back LGP 2014 of LGP 2014 bottoms, side-scattered.
Equally, among this embodiment, described PCB2012 can be a slice PCB independently, also can be multi-disc PCB independently, and joining end to end between each sheet PCB connects, and can determine the sheet number of described PCB according to the end face respective shapes that constitutes the cylindrical body structure.For example: when the end face of cylindrical body structure need be square, then need four identical PCB of size to join end to end each other and connect.
For the ease of realizing the even bright dipping of LED, usually, the light diffusing sheet 203 of middle part hollow out can be set above the LED luminescence unit among above-mentioned two LED luminescence unit embodiment, respectively as shown in Figure 5 and Figure 6.The bright dipping of LED is played the effect of the even light of diffusion through light diffusing sheet.In addition, still as shown in Figure 5 and Figure 6, for the purpose of attractive in appearance, can cover plate 204 that be convenient to cover described driving governor be set at the hollow out position of light diffusing sheet.Described cover plate 204 can be set to can free folding form, be convenient to associative operation to driving governor.And the hollow out aperture shape of described cover plate and light diffusing sheet, size adapt.
The control luminous to LED for convenience, those skilled in the art can be provided for the inductive probe of light intensity or infrared acquisition, by the monitoring of detector to surrounding environment, trigger the light emitting control of driving governor to LED.Among the utility model embodiment, as shown in Figure 5 and Figure 6, perforate 205 on the cover plate of driving governor can covered, place described detector by this perforate 205, and, described detector is connected with driving governor, makes and to carry out the transmission of control signal between described detector and the driving governor.The position of described perforate can on the cover board be provided with according to actual needs, and the utility model is not done concrete qualification to its particular location.
Understanding for the ease of to technical solutions of the utility model is described in greater detail below by specific embodiment.
Fig. 7 is a kind of overall structure schematic diagram with LED area source of optical detection function.Wherein, LED light emitting source 29 is evenly distributed on the ring-shaped P CB 27 of middle hollow out, then PCB 27 is fixed on the lamp socket 28 of LED area source, above LED light emitting source 29, is coated with the diffuser plate corresponding 23, to play the effect of the even light of diffusion with the PCB shape.Do not arrange at the mid portion of LED area source led light source is set, but driving governor 24 is installed in the centre position of area source lamp socket 28, cover plate 22 is set on driving governor 24 then, perforate on the cover plate 22, by this perforate various environmental sensors 21 can be installed, driving governor 24 is connected with the sensor 21 at exploration hole place by lead, changes the luminous situation of light emitting source 29 by the ambient signal that detects.Fig. 8 is the profile of this LED area source, and as seen from the figure, whole light fixture has only lead 25 and plug 26 to be exposed at the light fixture outside, thereby makes whole LED area source structure compact more.
Fig. 9 is another kind of overall structure schematic diagram with LED area source of optical detection function.Wherein, LED light emitting source 74 is evenly distributed on PCB 75, PCB 75 is fixed on the reflective groove 76 then, and reflective groove 76 is fixed to the side, edge of lamp socket 77, among this embodiment, reflective groove can converge to light in the LGP, and PCB has formed four sides.The light that LED74 sends enters into LGP 78 through reflective groove 76 reflections, and the bottom of this LGP 78 and side, hollow out place are equipped with reflector 79, and reflector 79 can be with in the light reflected back LGP 78 that spills below LGP 78 through LGP 78 scatterings.The top of LGP 78 is provided with diffuser plate 73, plays the effect of light diffusion, even light.Do not arrange at the mid portion of LED area source led light source is set, but driving governor 70 is set.Equally, cover plate 72 is set above the driving governor 70, and perforate on the cover plate 72 can be installed various environmental sensors 71 by this perforate, driving governor 70 is connected with the sensor 71 at exploration hole place by lead, changes the luminous situation of LED light emitting source 74 by the ambient signal that detects.Figure 10 is the profile of the LED area source of corresponding figures 9.
In the above-mentioned example, what all enumerate is the LED area source that has detector, when not needing detector, then need not covering perforate on the cover plate that drives detector, and to this, the utility model is no longer given unnecessary details.
Cover the figure that the cover plate that drives detector can be set to different shape, can under LED illuminated by surface light source and the situation of not throwing light on, play decoration function attractive in appearance.
Compare with prior art, under the identical situation that goes out luminous power or identical LED quantity, the utility model can provide more homogeneous light emitting area and thinner light fixture thickness.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the utility model.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined herein General Principle can realize under the situation that does not break away from spirit or scope of the present utility model in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.