CN105065978B - Reflective blackboard lights - Google Patents
Reflective blackboard lights Download PDFInfo
- Publication number
- CN105065978B CN105065978B CN201510437488.9A CN201510437488A CN105065978B CN 105065978 B CN105065978 B CN 105065978B CN 201510437488 A CN201510437488 A CN 201510437488A CN 105065978 B CN105065978 B CN 105065978B
- Authority
- CN
- China
- Prior art keywords
- reflecting surface
- light source
- source board
- led light
- 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
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Planar Illumination Modules (AREA)
Abstract
A kind of reflective blackboard lights, including reflecting element and LED light source board, the LED light source board is arranged on the reflecting element, the first reflection channel is offered on the reflecting element, first reflection channel is provided with the first reflecting surface, second reflecting surface, the bottom end of first reflecting surface is arranged close to the side of the LED light source board, the light that one end of second reflecting surface LED light source board corresponding with the connection of the top of first reflecting surface and second reflecting surface issues is arranged, the light that the LED light source board issues towards second reflecting surface or can should be gone out oral reflex by first reflecting surface, second reflecting surface is for reflecting away the light that the LED light source board issues towards the outlet.The present invention sufficiently reflects the light that LED light source board issues by the first reflecting surface and the second reflective surface, project light from the outlet after reflection, directive blackboard or wall to be illuminated, avoid light directly projected from LED light source board and caused by dazzle, have the advantages that light is evenly distributed.
Description
Technical field
The present invention relates to a kind of LED illumination lamp, especially a kind of reflective blackboard lights.
Background technique
LED is referred to as forth generation light source, has the characteristics that energy-saving and environmental protection, service life length, low fever.Therefore, it is widely used
In the fields such as various instructions, backlight, display, decoration and general lighting.Classroom blackboard illumination purpose is to provide good
Vision luminous environment, guarantee Faculty and Students can easily on blackboard write, read blackboard on content.And in the prior art
Blackboard lights, it is common to be used along installation fluorescent tube as blackboard lights in the upper of blackboard.Since the light that fluorescent tube issues can
It can shine directly into the eyes of teacher, student, stronger light and background light will generate dazzle, illumination in contrast
The problems such as uneven.
Summary of the invention
In view of this, it is necessary to provide the reflective blackboard lights that a kind of light is evenly distributed.
A kind of reflective blackboard lights, including reflecting element and LED light source board, the LED light source board are arranged on the reflecting element, should
The first reflection channel is offered on reflecting element, which is provided with the first reflecting surface, the second reflecting surface, this is first anti-
The bottom end for penetrating face is arranged close to the side of the LED light source board, and the top of one end of second reflecting surface and first reflecting surface connects
It connects and second reflecting surface corresponds to the light setting that the LED light source board issues, the other end of second reflecting surface and the LED light source
Plate interval forms one outlet, first reflecting surface can by light that the LED light source board issues towards second reflecting surface or
Oral reflex should be gone out, second reflecting surface is for reflecting away the light that the LED light source board issues towards the outlet.
Compared with prior art, reflective blackboard lights utilize first reflection by the way that reflection channel is arranged on reflecting element
The first reflecting surface and the second reflective surface on channel sufficiently reflect the light that LED light source board issues, and pass through light
It is projected after reflection from the outlet, directive blackboard or wall to be illuminated avoid light and directly project and make from LED light source board
At dazzle.Due to can by adjusting the distribution of the shape adjustment emergent ray of the first reflecting surface and the second reflecting surface, so,
The reflecting element can make emergent ray be evenly distributed, so that the reflective blackboard lights have the advantages that light is evenly distributed.
Detailed description of the invention
Fig. 1 is the cross-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.
Specific embodiment
Present invention is further described in detail with specific embodiment with reference to the accompanying drawing.
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 provide photograph for the specific region on blackboard or wall
It is bright, including reflecting element 20 and LED light source board 10, the LED light source board 10 setting is on the reflecting element 20.It is opened up on the reflecting element 20
There is the first reflection channel 21, which is provided with the first reflecting surface 211, the second reflecting surface 212.First reflection
The bottom end in face 211 is arranged close to the side of the LED light source board 10, one end of second reflecting surface 212 and first reflecting surface 211
Top connection and the light setting that issues of the corresponding LED light source board 10 of second reflecting surface 212.Second reflecting surface 212
The other end and the LED light source board 10 interval form one outlet, which can issue the LED light source board 10
Light 40 towards second reflecting surface 212 or oral reflex should be gone out, second reflecting surface 212 is for sending out the LED light source board 10
Light 40 out is reflected away towards the outlet.The outlet is with respect to the blackboard or the angled setting of wall, so as to by light
Specific region on the directive blackboard or wall.Since the bottom end of first reflecting surface 211 is close to the side of the LED light source board 10
Setting, and second reflecting surface corresponds to the light setting of the LED light source board 10 sending, we can determine whether second reflectings surface
212 the LED light source board 10 projection on the whole necessarily cover the LED light source board 10.That is, second reflecting surface
212 and the positional relationship of the LED light source board 10 are relatively parallel or inclined, and are unlikely to be vertical, vertically can not just reflect LED
The light that light source board 10 issues.Moreover, because first reflecting surface 211 is arranged close to the LED light source board 10, LED light source board 10
The light of sending can all be reflected by first reflecting surface 211 or the second reflecting surface 212.This provides for improved the light extraction efficiencies of whole lamp.
LED light source board 10 is arranged on the reflecting element 20, the light 40 that LED light source board 10 issues passes through the first reflecting surface
211 or second reflecting surface 212 reflect after, just make light 40 from outlet project.Therefore, human eye is directly avoided to observe directly
Light source and feel dazzle, eliminate dazzle.
Since the side of the LED light source board 10 is arranged in the first reflecting surface 211, the light 40 of the LED light source board 10 sending
Some is irradiated towards side, this some light 40 is reflected into the second reflecting surface 212 by the first reflecting surface 211, then passes through
Second reflecting surface 212 goes out oral reflex towards this.Since second reflecting surface 212 is with respect to the LED light source board 10, the LED light source board
Some shines directly into the second reflecting surface 212 to 10 light 40 issued, anti-towards the outlet by second reflecting surface 212
It penetrates.By a variety of reflection modes, so that 40 overwhelming majority of light that the LED light source board 10 issues can be transferred through reflection direction and be somebody's turn to do
Exit radiation is gone out, and is reduced the loss of light 40, is substantially increased optical efficiency.
Please refer to Fig. 1 and Fig. 2.The LED light source board 10 is string configuration, is equipped at intervals in the LED light source board 10 multiple
LED light source, first reflecting surface 211 and the second reflecting surface 212 are the string configuration of the corresponding LED light source board 10 setting.
The LED light source board 10 is arranged in the length of second reflecting surface 212 and the opposite inclined angle pin of LED light source board 10, so that
The light 40 issued from the LED light source board 10 all shines directly into first reflecting surface 211 and second reflecting surface 212
On.The light that can be issued in this way to avoid the LED light source board 10 is emitted directly toward outside, to eliminate glare phenomenon.
The LED light source board 10 is string configuration, and first reflecting surface 211 and the second reflecting surface 212 are corresponding be somebody's turn to do
The string configuration that LED light source board 10 is arranged.Therefore, so that the reflective blackboard lights 100 can adapt to the length requirement of blackboard,
Guarantee enough light irradiations.Preferably, which is obliquely installed, and about 30 ° -35 ° of angle with horizontal plane.Oblique light
Source can be improved optical reflection intensity, improve optical efficiency.
Please refer to Fig. 1 and Fig. 2.Preferably, the substantially vertical LED light source board 10 setting of first reflecting surface 211.This second
Reflecting surface 212 is globoidal structure, which is used for the light 40 that issues the LED light source board 10 and this is first anti-
The light 40 for penetrating the reflection of face 211 goes out oral reflex towards this.Wherein, the first reflecting surface 211 is set as substantially hanging down with the LED light source
Directly, and the second reflecting surface 212 is globoidal structure, in order to enable entire reflecting element 20 has the light that the LED light source board 10 issues
There is strong reflection, improves the reflection efficiency of reflecting element 20.
Please refer to Fig. 1 and Fig. 2.It further include light guide plate 213, which is arranged in the other side of LED light source board 10,
The light guide plate 213 is arranged with respect to first reflecting surface 211.That is, the light guide plate 213, the LED light source board 10 and this first
Reflecting surface 211 forms a U-lag.The light guide plate 213 is used to reflect the light 40 directly issued from the LED light source board 10,
So that all equal direct irradiations of light 40 issued from the LED light source board 10 are in first reflecting surface 211, the second reflecting surface
212 and the light guide plate 213 on.The light issued from the LED light source board 10 can be thus stopped directly to project this completely anti-
It penetrates except part, to eliminate glare phenomenon.Certainly, if the length long enough of second reflecting surface 212, can also allow all
The light that LED light source board 10 directly issues is radiated on first reflecting surface 211 and second reflecting surface 212, to save
The setting of the light guide plate 213.
By the way that light guide plate 213 is arranged in the other side of the LED light source board 10, so that the small portion that the LED light source board 10 issues
Light splitter 40 is irradiated towards the light guide plate 213, and the fraction light 40 is anti-by light guide plate 213, the first reflecting surface 211, second
After penetrating the successively reflection in face 212, go out from the exit radiation.Light 40 is avoided to lose.
Please refer to Fig. 1 and Fig. 2.It further include light-emitting plate, light-emitting plate setting is in the exit, and the light-emitting plate is by transparent or half
Transparent material is made, and is provided with diffusion material in the light-emitting plate.It is non-for diffusion or scattering light 40 by the way that light-emitting plate is arranged
Normal effective uniform illumination, the indirect glare after reducing reflection provide more excellent luminous environment for teaching.
The bottom surface of the LED light source board 10 and the reflecting element 20 are thermally connected, which is made into integration by highly heat-conductive material.
Please refer to Fig. 1 and Fig. 2.The second reflection channel 22 is also provided on the reflecting element 20, second reflection channel 22 with
First reflection channel 21 is arranged in parallel, and the second LED light source board 10 is equipped in second reflection channel 22, this second is provided with the
Three reflectings surface 221, the 4th reflecting surface 222, the third reflecting surface 221 be arranged close to the LED light source board 10 and it is substantially vertical this
Two LED light source boards 10, one end of the 4th reflecting surface 222 is connect with the top of the third reflecting surface 221 and the 4th reflecting surface
222 opposite second LED light source boards 10 are obliquely installed, between the other end of the 4th reflecting surface 222 and second LED light source board 10
Every forming second outlet, the 4th reflecting surface 222 is used to towards this second go out light 40 that second LED light source board 10 issues
Oral reflex is gone out.
Wherein, second reflection channel 22 and first reflection channel 21 have similar principle of reflection, obtained anti-
It is similar to penetrate effect.The second reflection channel 22 is set by extension, so that the reflective blackboard lights 100 can adapt to high two meters
Blackboard irradiates demand.First reflection channel 21 and second reflection channel 22 use independent light distribution, facilitate control and adjustment light
Learn structure.
Please refer to Fig. 1 and Fig. 2.Preferably, the curvature of the 4th reflecting surface 222 is greater than the curvature of second reflecting surface 212
So that the direction by light 40 towards inclined first reflection channel 21 is reflected.By setting the curvature of the 4th reflecting surface 222 to
Greater than the curvature of second reflecting surface 212.So that the light 40 of the second reflection channel 22 is irradiated mainly towards the blackboard upper half, and
The light 40 of first reflection channel 21 is irradiated mainly towards the lower half of blackboard.So that the first reflection channel 21 and the second reflection are logical
40 cross-fire of light in road 22, when effectively avoiding the irradiation of multiple light distribution structures, the problem of being also easy to produce blackening, hot spot.Together
When, it may have the effect of certain uniform illumination, the indirect glare after reducing reflection, when adding light-emitting plate, so that whole lamps and lanterns have
Good uniform illumination.
In conclusion the hiding of LED light source board 10 is located in the reflecting element 20 by the reflective blackboard lights 100 by setting, lead to
It crosses reflection light 40 shines out.So that human eye will not observe directly light source, direct glare is eliminated.It is reasonable by being arranged
The first reflecting surface 211, the second reflecting surface 212 and the light guide plate 213 of structure, so that the light 40 that the LED light source board 10 issues
It is most of to be reflected, it avoids light 40 from losing, substantially increases optical efficiency.Second is opened up by increasing
Reflection channel 22 meets the lighting demand of big blackboard.Pass through the second reflecting surface 212 of setting different curvature and the 4th reflection simultaneously
Face 222, so that the light 40 of the second reflection channel 22 is irradiated mainly towards the blackboard upper half, and the light of the first reflection channel 21
40 mainly towards blackboard lower half irradiate.So that the light 40 of the first reflection channel 21 and the second reflection channel 22 intersects photograph
It penetrates, eliminates blackening, dark space, also have the effect of uniform illumination.
It should be understood that the reflecting element 20 is made using highly heat-conductive material, primarily to enabling to the LED light source
The heat that plate 10 issues quickly is transmitted in the external world.When the reflective blackboard lights 100 can satisfy the heat dissipation effect of whole lamp,
This mode can not also be taken to radiate.Such as increase radiator structure in the top of reflecting element 20.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent substitution, improvement and etc. done be should be included within the scope of the present invention.
Claims (8)
1. a kind of reflective blackboard lights, including reflecting element and LED light source board, which is arranged on the reflecting element, packet
Include the first LED light source board and the second LED light source board, which is characterized in that the first reflection channel is offered on the reflecting element, this first
Reflection channel is provided with the first reflecting surface, the second reflecting surface, and the bottom end of first reflecting surface is close to the one of first LED light source board
Side setting, one end of second reflecting surface first LED opposite with the connection of the top of first reflecting surface and second reflecting surface
Light source board is obliquely installed, and the other end of second reflecting surface and the first LED light source board interval form one outlet, this is first anti-
The light that the face of penetrating can issue first LED light source board is towards second reflecting surface or should go out oral reflex, second reflecting surface
Light for issuing first LED light source board is reflected away towards the outlet；It is logical that the second reflection is offered on the reflecting element
Road, second reflection channel are arranged in parallel with first reflection channel, and the second LED light source board is equipped in second reflection channel,
Second reflection channel is provided with third reflecting surface, the 4th reflecting surface, which is arranged close to second LED light source board
And substantially vertical second LED light source board, one end of the 4th reflecting surface are connect and the 4th with the top of the third reflecting surface
Reflecting surface is obliquely installed with respect to second LED light source board, the other end of the 4th reflecting surface and the second LED light source board interval shape
At second outlet, the 4th reflecting surface is for reflecting away the light that second LED light source board issues towards the second outlet；
The curvature of 4th reflecting surface be greater than the curvature of second reflecting surface so as to by light towards the direction of inclined first reflection channel
Reflection；The bottom surface of the LED light source board and the reflecting element are thermally connected.
2. reflective blackboard lights according to claim 1, which is characterized in that the LED light source board is string configuration, should
Multiple LED light sources are equipped at intervals in LED light source board, first reflecting surface and the second reflecting surface are that the corresponding LED light source board is set
The string configuration set.
3. reflective blackboard lights according to claim 2, which is characterized in that further include light-emitting plate, light-emitting plate setting exists
The exit, the light-emitting plate are made of transparent or semitransparent material, are provided with diffusion material in the light-emitting plate.
4. reflective blackboard lights according to claim 1, which is characterized in that the length of second reflecting surface and it is opposite this
First LED light source board is arranged in the inclined angle pin of one LED light source board, so that the light issued from first LED light source board
Line all shines directly on first reflecting surface and second reflecting surface.
5. reflective blackboard lights according to claim 1, which is characterized in that second reflecting surface is globoidal structure, this
The light of light and first reflective surface that two reflectings surface are used to issue first LED light source board is anti-towards the outlet
It penetrates.
6. reflective blackboard lights according to claim 1, which is characterized in that the reflecting element is by one system of highly heat-conductive material
At.
7. reflective blackboard lights according to claim 1, which is characterized in that first reflecting surface it is substantially vertical this first
LED light source board setting.
8. reflective blackboard lights according to claim 1, which is characterized in that further include light guide plate, light guide plate setting exists
The other side of first LED light source board, the light guide plate with respect to first reflecting surface be arranged, the light guide plate for reflect from this first
The light directly issued in LED light source board, so that all equal direct irradiations of light issued from first LED light source board are at this
On first reflecting surface, the second reflecting surface and the 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105065978A CN105065978A (en) | 2015-11-18 |
| CN105065978B true CN105065978B (en) | 2019-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510437488.9A Expired - Fee Related CN105065978B (en) | 2015-07-23 | 2015-07-23 | Reflective blackboard lights |
Country Status (1)
| Country | Link |
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| CN (1) | CN105065978B (en) |
Families Citing this family (7)
| 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 | LED anti-glare blackboard light |
| CN107917364B (en) * | 2017-10-27 | 2020-06-09 | 江苏新广联光电股份有限公司 | LED writing board 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 |
| JP1709272S (en) | 2021-03-05 | 2022-03-08 | Lighting equipment stand | |
| JP1709271S (en) | 2021-03-05 | 2022-03-08 | lighting equipment | |
| WO2026012520A1 (en) * | 2024-07-08 | 2026-01-15 | 苏州欧普照明有限公司 | Wall washer |
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| 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 |
| CN103883917A (en) * | 2014-04-15 | 2014-06-25 | 李忠凯 | Light emitting diode 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 Chalkboard Light |
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2015
- 2015-07-23 CN CN201510437488.9A patent/CN105065978B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101566310A (en) * | 2008-04-25 | 2009-10-28 | 先进开发光电股份有限公司 | Reflecting shade, lamp group unit and lamp panel |
| CN201672396U (en) * | 2010-05-20 | 2010-12-15 | 刘翊安 | Blackboard illuminating lamp |
| CN103032782A (en) * | 2011-09-29 | 2013-04-10 | 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 |
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| CN204986641U (en) * | 2015-07-23 | 2016-01-20 | 漳州立达信光电子科技有限公司 | Reflective Chalkboard Light |
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| Publication number | Publication date |
|---|---|
| CN105065978A (en) | 2015-11-18 |
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Granted publication date: 20190402 |