CN105065978A - Reflecting type blackboard lamp - Google Patents
Reflecting type blackboard lamp Download PDFInfo
- Publication number
- CN105065978A CN105065978A CN201510437488.9A CN201510437488A CN105065978A CN 105065978 A CN105065978 A CN 105065978A CN 201510437488 A CN201510437488 A CN 201510437488A CN 105065978 A CN105065978 A CN 105065978A
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- CN
- China
- Prior art keywords
- light source
- reflecting surface
- led light
- source plate
- reflecting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/0025—Combination of two or more reflectors for a single light source
- F21V7/0033—Combination of two or more reflectors for a single light source with successive reflections from one reflector to the next or following
- F21V7/0041—Combination of two or more reflectors for a single light source with successive reflections from one reflector to the next or following for avoiding direct view of the light source or to prevent dazzling
Abstract
A reflecting type blackboard lamp comprises reflecting pieces and LED light source boards. The LED light source boards are arranged on the reflecting pieces. One reflecting piece is provided with a first reflecting channel which is provided with a first reflecting face and a second reflecting face. The bottom end of the first reflecting face is close to one side of the corresponding LED light source board, one end of the second reflecting face is connected with the top end of the first reflecting face, and the second reflecting face is arranged corresponding to light emitted from the corresponding LED light source board. The first reflecting face can reflect the light emitted from the corresponding LED light source board towards the second reflecting face or an outlet, and the second reflecting face is used for reflecting out the light emitted from the corresponding LED light source board towards the outlet. The first reflecting face and the second reflecting face are used for fully reflecting the light emitted from the corresponding LED light source board, the light is reflected and then emitted out from the outlet to be emitted to a blackboard or a wall to be irradiated, and therefore dazzling caused by direct emitting of the light from the LED light source boards is avoided; the reflecting type blackboard lamp has the advantage that light distribution is even.
Description
Technical field
The present invention relates to a kind of LED illumination lamp, particularly a kind of reflective blackboard lights.
Background technology
LED is called as forth generation light source, has the features such as energy-saving and environmental protection, life-span length, low heating.Therefore, be widely used in the fields such as various instruction, backlight, display, decoration and general lighting.Classroom blackboard illumination object is to provide good visual light environment, ensures that Faculty and Students can write like a cork on blackboard, the content of reading on blackboard.And blackboard lights of the prior art, common for using as blackboard lights along installing fluorescent tube in the upper of blackboard.The light sent due to fluorescent tube may shine directly in the eyes of teacher, student, will produce the problems such as dazzle, uneven illumination be even under the contrast of stronger light and background light.
Summary of the invention
In view of this, be necessary to provide a kind of distribution of light uniform reflective blackboard lights.
A kind of reflective blackboard lights, comprise reflecting element and LED light source plate, this LED light source plate is arranged on this reflecting element, this reflecting element offers the first reflection channel, this first reflection channel is provided with the first reflecting surface, second reflecting surface, the bottom of this first reflecting surface is arranged near the side of this LED light source plate, one end of this second reflecting surface be connected with the top of this first reflecting surface and this second reflecting surface to arranging by the light that sends of LED light source plate, the other end and this LED light source plate gap-forming of this second reflecting surface export, towards this second reflecting surface, maybe this goes out oral reflex to the light that this LED light source plate can send by this first reflecting surface, this second reflecting surface is used for the light that this LED light source plate sends to reflect away towards this outlet.
Compared with prior art, reflective blackboard lights by arranging reflection channel on reflecting element, the first reflecting surface on this first reflection channel and the second reflective surface is utilized fully to reflect the light that LED light source plate sends, light is penetrated from this outlet after reflection, the blackboard that directive is to be illuminated or body of wall, avoid the dazzle that light directly causes from the injection of LED light source plate.Due to the distribution of the shape adjustment emergent ray of adjustment first reflecting surface and the second reflecting surface can be passed through, so this reflecting element can make outgoing distribution of light even, thus makes this reflective blackboard lights have the uniform advantage of distribution of light.
Accompanying drawing explanation
Fig. 1 is the sectional view of the reflective blackboard lights of first embodiment of the invention.
Fig. 2 is the light path schematic diagram of reflective blackboard lights shown in Fig. 1.
Detailed description of the invention
Below in conjunction with accompanying drawing and detailed description of the invention, the present invention is described in further detail.
The reflective blackboard lights 100 of first embodiment of the invention, please refer to Fig. 1 to Fig. 2.
Please refer to Fig. 1 and Fig. 2.A kind of reflective blackboard lights 100, for providing illumination to the specific region on blackboard or body of wall, comprise reflecting element 20 and LED light source plate 10, this LED light source plate 10 is arranged on this reflecting element 20.This reflecting element 20 offers the first reflection channel 21, this first reflection channel 21 is provided with the first reflecting surface 211, second reflecting surface 212.The bottom of this first reflecting surface 211 is arranged near the side of this LED light source plate 10, one end of this second reflecting surface 212 be connected with the top of this first reflecting surface 211 and this second reflecting surface 212 to arranging by the light that sends of LED light source plate 10.The other end and this LED light source plate 10 gap-forming of this second reflecting surface 212 export, towards this second reflecting surface 212, maybe this goes out oral reflex to the light 40 that this LED light source plate 10 can send by this first reflecting surface 211, and this second reflecting surface 212 reflects away towards this outlet for the light 40 sent by this LED light source plate 10.This outlet relative to this blackboard or the angled setting of body of wall so that by the specific region on this blackboard of light directive or body of wall.Because the bottom of this first reflecting surface 211 is arranged near the side of this LED light source plate 10, and this second reflecting surface is to arranging by the light that sends of LED light source plate 10, we can determine, this second reflecting surface 212 this LED light source plate 10 projection on the whole must cover this LED light source plate 10.That is, this second reflecting surface 212 is opposing parallel with the position relationship of this LED light source plate 10 or tilts, and can not be vertical, vertically just cannot the light that sends of reflex LED light source plate 10.And because this first reflecting surface 211 is arranged near this LED light source plate 10, the light that LED light source plate 10 sends all can be reflected by this first reflecting surface 211 or the second reflecting surface 212.This provides for improved the light extraction efficiency of whole lamp.
Be arranged on by LED light source plate 10 on this reflecting element 20, the light 40 that LED light source plate 10 sends, by after the first reflecting surface 211 or the reflection of the second reflecting surface 212, just makes light 40 from outlet injection.Therefore, directly avoid human eye to observe directly light source and feel and dazzle eliminate dazzle.
Because the first reflecting surface 211 is arranged on the side of this LED light source plate 10, the light 40 that this LED light source plate 10 sends some irradiate towards side, this part light 40 reflexes to the second reflecting surface 212 by the first reflecting surface 211, then goes out oral reflex by the second reflecting surface 212 towards this.Due to this second reflecting surface 212 this LED light source plate 10 relative, the light 40 that this LED light source plate 10 sends some shine directly into the second reflecting surface 212, go out oral reflex by this second reflecting surface 212 towards this.By multiple reflection mode, light 40 overwhelming majority that this LED light source plate 10 is sent can be gone out towards this exit radiation by reflection, decreases light 40 and loses, substantially increase optical efficiency.
Please refer to Fig. 1 and Fig. 2.This LED light source plate 10 is string configuration, and this LED light source plate 10 is interval with multiple LED light source, this first reflecting surface 211 and the second reflecting surface 212 be to should LED light source plate 10 arrange string configuration.The length of this second reflecting surface 212 and the angle pin of this LED light source plate 10 inclination are relatively arranged this LED light source plate 10, and the light 40 sent from this LED light source plate 10 is all shone directly on this first reflecting surface 211 and this second reflecting surface 212.The direct directive of the light that this LED light source plate 10 can be avoided like this to send is outside, thus eliminates glare phenomenon.
This LED light source plate 10 is string configuration, and this first reflecting surface 211 and the second reflecting surface 212 be to should LED light source plate 10 arrange string configuration.Therefore, make this reflective blackboard lights 100 can adapt to the length requirement of blackboard, ensure that enough illumination is penetrated.Preferably, this LED light source plate 10 is obliquely installed, and with horizontal plane angle about 30 °-35 °.Inclination light source can improve optical reflection intensity, improves optical efficiency.
Please refer to Fig. 1 and Fig. 2.Preferably, this first reflecting surface 211 this LED light source plate 10 substantially vertical is arranged.This second reflecting surface 212 is globoidal structure, and the light 40 that this second reflecting surface 212 reflects for the light 40 that sent by this LED light source plate 10 and this first reflecting surface 211 goes out oral reflex towards this.Wherein, the first reflecting surface 211 is set to substantially vertical with this LED light source, and the second reflecting surface 212 being globoidal structure, all in order to make whole reflecting element 20 have strong reflection to the light that this LED light source plate 10 sends, improving the reflection efficiency of reflecting element 20.
Please refer to Fig. 1 and Fig. 2.Also comprise light guide plate 213, this light guide plate 213 is arranged on the opposite side of LED light source plate 10, and this light guide plate 213 this first reflecting surface 211 relative is arranged.That is, this light guide plate 213, this LED light source plate 10 and this first reflecting surface 211 form a U-lag.This light guide plate 213 for reflecting the light 40 directly sent from this LED light source plate 10, make all light 40 sent from this LED light source plate 10 all direct irradiation on this first reflecting surface 211, second reflecting surface 212 and this light guide plate 213.So just can stop that the light sent from this LED light source plate 10 directly penetrates outside this reflecting element completely, thus eliminate glare phenomenon.Certainly, if the length long enough of this second reflecting surface 212, the light that all LED light source plates 10 also can be allowed directly to send all is radiated at this first reflecting surface 211 with on this second reflecting surface 212, thus saves the setting of this light guide plate 213.
By arranging light guide plate 213 at the opposite side of this LED light source plate 10, the fraction light 40 that this LED light source plate 10 is sent irradiates towards this light guide plate 213, this fraction light 40, by after the reflection successively of light guide plate 213, first reflecting surface 211, second reflecting surface 212, is gone out from this exit radiation.Light 40 is avoided to lose.
Please refer to Fig. 1 and Fig. 2.Also comprise light-emitting plate, this light-emitting plate is arranged on this exit, and this light-emitting plate is made up of transparent or semitransparent material, and this light-emitting plate is provided with diffusion material.By setting out tabula rasa, for diffusion or scattered beam 40, very effective uniform illumination, reduces the indirect glare after reflection, for teaching provides more excellent luminous environment.
Bottom surface and this reflecting element 20 of this LED light source plate 10 are thermally coupled, and this reflecting element 20 is made into integration by highly heat-conductive material.
Please refer to Fig. 1 and Fig. 2.This reflecting element 20 also offers the second reflection channel 22, this second reflection channel 22 be arranged in parallel with this first reflection channel 21, the second LED light source plate 10 is provided with in this second reflection channel 22, this second is provided with the 3rd reflecting surface 221, 4th reflecting surface 222, 3rd reflecting surface 221 is arranged and this second LED light source plate 10 substantially vertical near this LED light source plate 10, one end of 4th reflecting surface 222 connects with the top of the 3rd reflecting surface 221 and the 4th reflecting surface 222 this second LED light source plate 10 relative is obliquely installed, the other end and this second LED light source plate 10 gap-forming second of the 4th reflecting surface 222 export, 4th reflecting surface 222 reflects away towards this second outlet for the light 40 sent by this second LED light source plate 10.
Wherein, this second reflection channel 22 has similar principle of reflection to this first reflection channel 21, and the reflecting effect obtained is similar.Arrange the second reflection channel 22 by expansion, the blackboard making this reflective blackboard lights 100 can adapt to high two meters irradiates demand.This first reflection channel 21 adopts independent luminous intensity distribution with this second reflection channel 22, convenient control and adjustment optical texture.
Please refer to Fig. 1 and Fig. 2.Preferably, the curvature of the 4th reflecting surface 222 is greater than the curvature of this second reflecting surface 212 so that by the direction reflection of light 40 towards this first reflection channel 21 inclined.By the curvature of the 4th reflecting surface 222 is set to the curvature being greater than this second reflecting surface 212.The light 40 of the second reflection channel 22 is mainly irradiated towards the blackboard first half, and the light 40 of the first reflection channel 21 mainly irradiate towards the Lower Half of blackboard.Make light 40 cross-fire of the first reflection channel 21 and the second reflection channel 22, when effectively avoiding the irradiation of multiple light distribution structure, easily produce the problem of blackening, hot spot.Meanwhile, also there is the effect of certain uniform illumination, reducing the indirect glare after reflection, when adding light-emitting plate, making whole light fixture have good uniform illumination.
In sum, LED light source plate 10 Tibetan is located in this reflecting element 20 by arranging by this reflective blackboard lights 100, is shone out by light 40 by reflection.Make human eye to observe directly light source, eliminate direct glare.By arranging the first reflecting surface 211, second reflecting surface 212 and light guide plate 213 of Rational structure, light 40 overwhelming majority that this LED light source plate 10 is sent can both be reflected, and avoids light 40 to lose, substantially increases optical efficiency.Offering the second reflection channel 22 by increasing, meeting the lighting demand of large blackboard.Simultaneously by arranging the second reflecting surface 212 and the 4th reflecting surface 222 of different curvature, the light 40 of the second reflection channel 22 is mainly irradiated towards the blackboard first half, and the light 40 of the first reflection channel 21 mainly irradiate towards the Lower Half of blackboard.Make light 40 cross-fire of the first reflection channel 21 and the second reflection channel 22, eliminate blackening, dark space, also there is the effect of uniform illumination.
Understandable, use highly heat-conductive material to make this reflecting element 20, the heat mainly in order to this LED light source plate 10 can be made to send is transmitted in the external world fast.When this reflective blackboard lights 100 can meet the radiating effect of whole lamp, this mode also can not be taked to dispel the heat.As increased radiator structure etc. above reflecting element 20.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within the scope of protection of the invention.
Claims (10)
1. a reflective blackboard lights, comprise reflecting element and LED light source plate, this LED light source plate is arranged on this reflecting element, it is characterized in that, this reflecting element offers the first reflection channel, this first reflection channel is provided with the first reflecting surface, second reflecting surface, the bottom of this first reflecting surface is arranged near the side of this LED light source plate, one end of this second reflecting surface connects with the top of this first reflecting surface and this second reflecting surface this LED light source plate relative is obliquely installed, the other end and this LED light source plate gap-forming of this second reflecting surface export, towards this second reflecting surface, maybe this goes out oral reflex to the light that this LED light source plate can send by this first reflecting surface, this second reflecting surface is used for the light that this LED light source plate sends to reflect away towards this outlet.
2. reflective blackboard lights according to claim 1, it is characterized in that, this LED light source plate is string configuration, and this LED light source plate is interval with multiple LED light source, this first reflecting surface and the second reflecting surface be to should LED light source plate arrange string configuration.
3. reflective blackboard lights according to claim 2, is characterized in that, also comprise light-emitting plate, and this light-emitting plate is arranged on this exit, and this light-emitting plate is made up of transparent or semitransparent material, and this light-emitting plate is provided with diffusion material.
4. reflective blackboard lights according to claim 1, it is characterized in that, the length of this second reflecting surface and the angle pin of this LED light source plate inclination are relatively arranged this LED light source plate, and the light sent from this LED light source plate is all shone directly on this first reflecting surface and this second reflecting surface.
5. reflective blackboard lights according to claim 1, is characterized in that, this second reflective surface is globoidal structure, and the light that this second reflecting surface is used for light and this first reflective surface sent by this LED light source plate goes out oral reflex towards this.
6. reflective blackboard lights according to claim 1, it is characterized in that, this reflecting element offers the second reflection channel, this second reflection channel and this first reflection channel be arranged in parallel, the second LED light source plate is provided with in this second reflection channel, this second is provided with the 3rd reflecting surface, 4th reflecting surface, 3rd reflecting surface is arranged and this second LED light source plate substantially vertical near this LED light source plate, one end of 4th reflecting surface connects with the top of the 3rd reflecting surface and the 4th reflecting surface this second LED light source plate relative is obliquely installed, the other end and this second LED light source plate gap-forming second of the 4th reflecting surface export, the light that 4th reflecting surface is used for this second LED light source plate to send reflects away towards this second outlet.
7. reflective blackboard lights according to claim 6, is characterized in that, the curvature of the 4th reflecting surface is greater than the curvature of this second reflecting surface so that by the direction reflection of light towards this first reflection channel inclined.
8. reflective blackboard lights according to claim 1, is characterized in that, bottom surface and this reflecting element of this LED light source plate are thermally coupled, and this reflecting element is made into integration by highly heat-conductive material.
9. reflective blackboard lights according to claim 6, is characterized in that, this first reflecting surface this LED light source plate substantially vertical is arranged.
10. reflective blackboard lights according to claim 1, it is characterized in that, also comprise light guide plate, this light guide plate is arranged on the opposite side of LED light source plate, this light guide plate relatively this first reflecting surface is arranged, this light guide plate, for reflecting the light directly sent from this LED light source plate, makes all equal direct irradiations of light sent from this LED light source plate on this first reflecting surface, the second reflecting surface and this light guide plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510437488.9A CN105065978B (en) | 2015-07-23 | 2015-07-23 | Reflective blackboard lights |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510437488.9A CN105065978B (en) | 2015-07-23 | 2015-07-23 | Reflective blackboard lights |
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| CN105065978A true CN105065978A (en) | 2015-11-18 |
| CN105065978B CN105065978B (en) | 2019-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510437488.9A Active CN105065978B (en) | 2015-07-23 | 2015-07-23 | Reflective blackboard lights |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106855207A (en) * | 2017-02-28 | 2017-06-16 | 东莞市百分百科技有限公司 | A kind of LED blackboard lightses of high brightness and high evenness |
| CN107620895A (en) * | 2017-09-21 | 2018-01-23 | 常州市元智汇电子有限公司 | The anti-dazzle blackboard lightses of LED |
| CN107917364A (en) * | 2017-10-27 | 2018-04-17 | 江苏新广联光电股份有限公司 | LED clipboard lamps |
| CN115013756A (en) * | 2021-03-05 | 2022-09-06 | 北京字节跳动网络技术有限公司 | Light-emitting device and lamp |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101566310A (en) * | 2008-04-25 | 2009-10-28 | 先进开发光电股份有限公司 | Reflecting shades, lamp set unit and lamp panel |
| CN201672396U (en) * | 2010-05-20 | 2010-12-15 | 刘翊安 | Blackboard illuminating lamp |
| CN103032782B (en) * | 2011-09-29 | 2015-05-20 | 海洋王照明科技股份有限公司 | Light-emitting diode (LED) round pendant lamp |
| CN203273569U (en) * | 2013-04-19 | 2013-11-06 | 鹤山市广明源照明电器有限公司 | Anti-dazzle LED lighting lamp |
| CN103883917B (en) * | 2014-04-15 | 2016-08-17 | 李忠凯 | LED lamp |
| CN204278850U (en) * | 2014-12-09 | 2015-04-22 | 石家庄经济学院 | A kind of blackboard with LED for evening school's politics specialty |
| CN204986641U (en) * | 2015-07-23 | 2016-01-20 | 漳州立达信光电子科技有限公司 | Reflective blackboard lamp |
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2015
- 2015-07-23 CN CN201510437488.9A patent/CN105065978B/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106855207A (en) * | 2017-02-28 | 2017-06-16 | 东莞市百分百科技有限公司 | A kind of LED blackboard lightses of high brightness and high evenness |
| CN107620895A (en) * | 2017-09-21 | 2018-01-23 | 常州市元智汇电子有限公司 | The anti-dazzle blackboard lightses of LED |
| CN107917364A (en) * | 2017-10-27 | 2018-04-17 | 江苏新广联光电股份有限公司 | LED clipboard lamps |
| CN115013756A (en) * | 2021-03-05 | 2022-09-06 | 北京字节跳动网络技术有限公司 | Light-emitting device and lamp |
| CN115013756B (en) * | 2021-03-05 | 2023-07-21 | 北京字节跳动网络技术有限公司 | Light-emitting device and lamp |
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| CN105065978B (en) | 2019-04-02 |
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