CN204513070U - A kind of LED desk lamp - Google Patents
A kind of LED desk lamp Download PDFInfo
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- CN204513070U CN204513070U CN201520062816.7U CN201520062816U CN204513070U CN 204513070 U CN204513070 U CN 204513070U CN 201520062816 U CN201520062816 U CN 201520062816U CN 204513070 U CN204513070 U CN 204513070U
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- reflector
- light source
- led
- diffuser plate
- lamp housing
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Abstract
The utility model discloses a kind of LED desk lamp, comprise pedestal, lamp housing, be connected to the support between pedestal and lamp housing, the lighting module in lamp housing, described lighting module comprises LED light source, reflector and diffuser plate.Reflector in lighting module is free form surface reflector, comprises two groups of free form surfaces, a closing end containing through hole, and form entrance port and the beam projecting mouth of light source, LED light source is arranged on the through hole center of closing end, and diffuser plate is arranged on exit portal place.The LED desk lamp that the utility model provides, the light that LED light source sends, through reflector, under the reflex of free reflecting curved surface, is radiated at and is positioned on the diffuser plate of exit portal, by the refraction of diffuser plate, region can be read and write at working face and form more uniform rectangular light spot.The hot spot that LED desk lamp disclosed in the utility model realizes in target illumination district has the features such as Illumination Distribution is reasonable, capacity usage ratio is high, uniformity is desirable.
Description
Technical field
The utility model relates to field of LED illumination, particularly relates to a kind of LED desk lamp.
Background technology
" read-write operation post lamp behaviour require " GBT9473-2008 defines supply voltage and is no more than the tengsten lamp of 250V, tubular fluorescent lamp as the desk lamp performance requirement of light source.There is large, the aging problem such as soon of power consumption as desk lamp light source in fluorescent lamp, from illuminating effect, fluorescent lamp easily produces dazzle.LED has been utilized in desk lamp illumination as lighting source of new generation, compared with fluorescent lamp and tengsten lamp, more can meet many standards that GBT9473-2008 proposes.
LED is used in read-write illumination place and possesses some superiority, and except factors such as the power consumption of light source own, life-spans, white light LEDs adopts DC driven, is conducive to eye healthy without stroboscopic.LED is as small size solid cold light source simultaneously, luminous intensity distribution has huge space, can improve its light utilization and the uniformity further by secondary optical design, compared with conventional light source, more can meet the requirement of read-write operation post lamp behaviour.But the current direct series-parallel mode of LED desk lamp many employings LED array, increases the volume of lighting module, is difficult to the advantage of embodiment itself.The mode that patent CN1664436A adopts LED module assembled as LED desk lamp patent comparatively early, patent CN104075218A adopts can to two pieces of folded LED panel as lighting module, all by direct for LED connection in series-parallel, these do not carry out the desk lamp of secondary optical design to LED light source, there are problems in illuminating effect, as human eye directly can see LED light source, dazzle value is higher, and the uniformity is difficult to meet standard-required etc.
Utility model content
The purpose of this utility model is to provide a kind of LED desk lamp, and this LED desk lamp can form the rectangular light spot of uniform-illumination distribution in target illumination field.
The LED desk lamp that the utility model provides, compared with existing LED desk lamp technology, light spot shape is innovated, and the rectangular light spot of realization, compared to traditional circular light spot, has the advantages that efficiency is high, the uniformity is desirable.Especially after desk lamp polarizing illumination, rectangular light spot can play Luminaire efficiency greatly, provides the illumination of efficient uniform to read-write region.
The LED desk lamp that the utility model proposes, comprise pedestal, be connected to support between pedestal and lamp housing, be positioned at the lighting module of lamp housing, described lighting module comprises LED light source 1, reflector 3 and diffuser plate 4, described reflector 3 is free form surface reflector, comprise two groups of free form surfaces, be respectively upper bottom surface and bottom surface, form entrance port and the exit portal of light source, described LED light source 1 is arranged on reserved through hole 33 place of reflector upper bottom surface 31, and described diffuser plate 4 is arranged on the beam projecting mouth place of reflector bottom surface; LED light source 1 exit portal aims at reflector 3 entrance port, and under the reflex of reflector 3, reflector 3 exit portal aims at the entrance port of diffuser plate 4, by the refraction of diffuser plate 4, can read and write region form more uniform rectangular light spot at working face.
In the utility model, the prismatic table shape of described reflector 3 entirety in side indent, upper bottom surface and bottom surface are similar figure, and upper bottom surface aperture size is less than bottom surface.
In the utility model, reflector is realized by two kinds of modes: lamp housing module coordinates reflector; Directly at lamp housing module internal coating reflecting material.
In the utility model, the LED light source 1 of use is LED array or great power LED.LED light source 1 is arranged on the lead to the hole site of reflector 3 upper bottom surface, and light emission direction is just to bottom surface.
In the utility model, described reflector 3 comprises lamp housing module and reflecting paper, described lamp housing module comprises light source mounting hole 21, inner reflective wall 22, upper bottom surface 31, reflecting paper side free form surface 32, through hole 33 and bottom surface, light source mounting hole 21 is for reflector upper bottom surface 31 of fitting, reflecting paper side free form surface 32 is positioned at lamp housing module inwall, light source mounting hole 21 center has through hole 33, for installing LED light source 1.Described diffuser plate is installed on the bottom surface of lamp housing module.
In the utility model, described inner reflective wall 22 applies reflecting material.
In the utility model, the diffusion material of described diffuser plate 4 is pmma or PC, and diffuser plate can do cloudy surface process.Diffuser plate is installed on the bottom surface exit positions of reflector, for accepting light source direct projection and the light via reflector reflects, reflects outside lamp housing.
The utility model carries out secondary optical design by free-form surface reflector to LED light source, some light is not incident upon reflector, direct outgoing lamp body is outside, residual ray outgoing lamp body under the reflex of reflector inside is outside, this two parts energy is under the diffuser plate through reflector another port reflects again, be radiated at target area, in target area, form the good rectangular light spot of the uniformity.
Accompanying drawing explanation
The LED desk lamp illumination module schematic diagram that Fig. 1 provides for the utility model embodiment;
Fig. 2 is the schematic diagram of lamp housing module and reflector in the utility model embodiment;
Fig. 3 is the top view of the utility model lamp lamp housing module and reflector;
In Fig. 4, (a) (b) is for LED light source is by the Illumination Distribution figure after reflector of the present utility model and section illumination coordinate.Wherein: (a) Illumination Distribution figure, (b) section illumination coordinate.
Number in the figure: 1 is LED light source, 2 is lamp housing, 3 is reflector, and 4 is diffuser plate, and 21 is light source mounting hole, 22 is inner reflective wall, 31 is reflector upper bottom surface, and 32 is reflector side free form surface, and 32a is the first reflector side free form surface, 32b is the second reflector side free form surface, and 33 is through hole.
Detailed description of the invention
The utility model is further illustrated by reference to the accompanying drawings below by embodiment.
Embodiment 1:
The lighting module that the utility model discloses a kind of LED desk lamp, comprise pedestal, be connected to support between pedestal and lamp housing, comprise lamp housing, described lighting module comprises LED light source 1, lamp housing 2, reflector 3 and diffuser plate 4 and forms.Whole reflector 3, in up-narrow and down-wide taper, better to retrain source light, carries out secondary optical design to LED light source 1.It is reasonable that the hot spot that described LED desk lamp realizes in target illumination district has Illumination Distribution, and capacity usage ratio is high, the feature that uniformity is desirable.
The LED desk lamp that the utility model is announced, the reflector 3 in lighting module is made up of the free form surface of two groups of indents and upper and lower bottom surface, the overall prismatic table shape in side indent, and upper and lower bottom surface is similar holds, and places light source and diffuser plate respectively.Described reflector relates to the two-part energy distribution of light source, i.e. the energy of directly outgoing and the energy of the optical system of outgoing after reflector reflects.Wherein, the direct outgoing of LED light source light on the table forms an initial rectangular illuminating area, and remaining energy, under the effect of reflector, is beaten to initial rectangular light spot region, after two-part energy supposition is mixed, forms uniform rectangular light spot.
The upper and lower bottom surface of described reflector 3 is similar irregular figure, and the aperture size of upper bottom surface is less than bottom surface, and wherein upper bottom surface reflecting paper seals, and prevents light from overflowing.The reserved through hole of reflecting paper of upper bottom surface, for placing LED light source 1.The size of this through-hole aperture and LED light source module sizableness, bottom surface position is exiting surface, and the light-emitting window of similar rectangle plays the effect of Shu Guang.The light that LED light source sends, after the bundle light and diffuser plate reflex of reflector, forms uniform rectangular light spot in read-write region.
Described LED desk lamp lighting module, in a preferred embodiment, reflector is realized by lamp housing module and reflector.As shown in Figure 2, lamp housing module comprises light source mounting hole 21, inner reflective wall 22, closed upper bottom surface 31, reflector side free form surface 32, through hole 33.Wherein light source mounting hole 21 is for reflector upper bottom surface 31 of fitting, and reflector side free form surface 32 is close to lamp housing module inwall.Wherein LED light source 1 is installed on through hole 33 center, and diffuser plate is installed on the bottom surface of reflector, and LED light source 1 light emission direction is just to diffuser plate 4 direction.The side of reflector 3 comprises: the first reflector free form surface 32a and the second reflector free form surface 32b two groups of free form surfaces.
Another embodiment of the present utility model realizes by applying reflecting material in lamp housing mould inner reflective wall 22.
Claims (7)
1. a LED desk lamp, comprise pedestal, be connected to the support between pedestal and lamp housing, be positioned at the lighting module of lamp housing, it is characterized in that described lighting module comprises LED light source (1), reflector (3) and diffuser plate (4), described reflector (3) is free form surface reflector, comprise two groups of free form surfaces, be respectively upper bottom surface and bottom surface, form entrance port and the exit portal of light source, described LED light source (1) is arranged on reserved through hole (33) place of reflector upper bottom surface (31), described diffuser plate (4) is arranged on the beam projecting mouth place of reflector bottom surface, LED light source (1) exit portal aims at reflector (3) entrance port, under the reflex of reflector (3), reflector (3) exit portal aims at the entrance port of diffuser plate (4), by the refraction of diffuser plate (4), region can be read and write at working face and form rectangular light spot.
2. a kind of LED desk lamp according to claim 1, it is characterized in that the prismatic table shape of described reflector (3) entirety in side indent, upper bottom surface and bottom surface are similar figure, and upper bottom surface aperture size is less than bottom surface.
3. a kind of LED desk lamp according to claim 1, is characterized in that reflector is realized by two kinds of modes: lamp housing module coordinates reflector or directly applies reflecting material in lamp housing module internal.
4. a kind of LED desk lamp according to claim 1, it is characterized in that LED light source (1) is for LED array or great power LED, LED light source (1) is arranged on the lead to the hole site of reflector (3) upper bottom surface, and light emission direction is just to bottom surface.
5. a kind of LED desk lamp according to claim 1, it is characterized in that described reflector (3) comprises lamp housing module and reflecting paper, described lamp housing module comprises light source mounting hole (21), inner reflective wall (22), upper bottom surface (31), reflecting paper side free form surface (32), through hole (33) and bottom surface, light source mounting hole (21) is for reflector upper bottom surface (31) of fitting, reflecting paper side free form surface (32) is positioned at lamp housing module inwall, light source mounting hole (21) center has through hole (33), for installing LED light source (1), described diffuser plate is installed on the bottom surface of lamp housing module.
6. a kind of LED desk lamp according to claim 5, is characterized in that described inner reflective wall (22) coating reflecting material.
7. a kind of LED desk lamp according to claim 1, it is characterized in that the diffusion material of described diffuser plate (4) is pmma or PC, diffuser plate does cloudy surface process, diffuser plate is installed on the bottom surface exit positions of reflector, for accepting light source direct projection and the light via reflector reflects, reflect outside lamp housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520062816.7U CN204513070U (en) | 2015-01-29 | 2015-01-29 | A kind of LED desk lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520062816.7U CN204513070U (en) | 2015-01-29 | 2015-01-29 | A kind of LED desk lamp |
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| Publication Number | Publication Date |
|---|---|
| CN204513070U true CN204513070U (en) | 2015-07-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520062816.7U Active CN204513070U (en) | 2015-01-29 | 2015-01-29 | A kind of LED desk lamp |
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| Country | Link |
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| CN (1) | CN204513070U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT519084A3 (en) * | 2016-09-12 | 2019-06-15 | H4X Eu | lamp |
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2015
- 2015-01-29 CN CN201520062816.7U patent/CN204513070U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT519084A3 (en) * | 2016-09-12 | 2019-06-15 | H4X Eu | lamp |
| US10337699B2 (en) | 2016-09-12 | 2019-07-02 | H4X E.U. | Light |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |