CN204164819U - Can be used for the LED of blackboard illumination - Google Patents
Can be used for the LED of blackboard illumination Download PDFInfo
- Publication number
- CN204164819U CN204164819U CN201420568419.2U CN201420568419U CN204164819U CN 204164819 U CN204164819 U CN 204164819U CN 201420568419 U CN201420568419 U CN 201420568419U CN 204164819 U CN204164819 U CN 204164819U
- Authority
- CN
- China
- Prior art keywords
- light source
- led
- exit facet
- led light
- source board
- 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.)
- Active
Links
Abstract
A kind of LED that can be used for blackboard illumination, comprise light source board and be arranged on the lens above this light source board, this light source board is provided with LED light source, these lens comprise bottom surface, be positioned at the exit facet above this bottom surface and side, this bottom surface this light source board almost parallel is arranged, this exit facet relatively this inclined bottom surface is arranged, the bottom of this exit facet is connected with the side of this bottom surface, the opposite side of this bottom surface is connected with the bottom of this side, the top of this side is connected with the top of this exit facet, this bottom surface is provided with the plane of incidence to this lens indent, this plane of incidence is arranged on the top of this LED light source, this plane of incidence comprises refraction section and guide section, this refraction section is positioned at directly over this LED light source, the light that this refraction section is used for this LED light source to send reflects towards this exit facet, this guide section is between this LED light source and this side, this guide section makes it towards this side-irradiation for the some light reflecting this LED light source and send, this side is used for towards this exit facet reflection ray.
Description
Technical field
The utility model relates to field of LED illumination, particularly a kind of LED that can be used for blackboard illumination.
Background technology
Blackboard lights use T8 fluorescent tube in current classroom adds reflection shield and carries out luminous intensity distribution, along with the emergence of LED, will replace T8 fluorescent tube.Due to the directional lighting that the principle of luminosity of LED produces, point light source light-emitting, the factors such as easy dazzle, reflection shield in the past then can not share.Therefore need to design new reflection shield coupling LED light source, the free form surface of optics requires that aluminium reflection shield precision is very high, and so large-scale thick and heavy aluminium reflection shield is to the challenge of technique and significant cost.Such as authorized announcement date is on 02 08th, 2012, the patent No. is that the Chinese utility model patent of 201120205735.X discloses a kind of blackboard lights, the utility model discloses a kind of blackboard lights, comprise a supporting construction, can be installed on the upside of blackboard or near downside; One bar shaped lampshade, its two ends and supporting construction pivot joint are fixed, and the side indent in described lampshade forms a reflective groove, and the wall of this reflective groove is by least one Surface forming; One strip light device, be arranged near center in reflective groove, its direction of illumination is at least towards reflective groove.Although adopt this blackboard lights can produce the Light distribation of certain angle, when adopting the linear light sorurce be made up of LED light source to use, be difficult to obtain good Light distribation by existing reflector, need thus separately to ward off new footpath.
Utility model content
In view of this, simple, the directed bright dipping of a kind of structure, the LED that can be used for blackboard illumination that light utilization efficiency is high are provided to provide.
The technical solution adopted in the utility model is: a kind of LED that can be used for blackboard illumination, comprise light source board and be arranged on the lens above this light source board, this light source board is provided with LED light source, these lens comprise bottom surface, be positioned at the exit facet above this bottom surface and side, this bottom surface this light source board almost parallel is arranged, this exit facet relatively this inclined bottom surface is arranged, the bottom of this exit facet is connected with the side of this bottom surface, the opposite side of this bottom surface is connected with the bottom of this side, the top of this side is connected with the top of this exit facet, this bottom surface is provided with the plane of incidence to this lens indent, this plane of incidence is arranged on the top of this LED light source, this plane of incidence comprises refraction section and guide section, this refraction section is positioned at directly over this LED light source, the light that this refraction section is used for this LED light source to send reflects towards this exit facet, this exit facet has the curved-surface structure corresponding with this refraction section to make most of light penetrate this lens through this exit facet, this guide section is between this LED light source and this side, this guide section makes it towards this side-irradiation for the some light reflecting this LED light source and send, this side is used for towards this exit facet reflection ray.
Compared with prior art, this LED that can be used for blackboard illumination is by arranging this lens, the light part that this LED light source sends is refracted on this side through the guide section of this plane of incidence, this some light reflexes on this exit facet and reflects through this exit facet by this side, another part light is directly refracted on this exit facet through the refraction section of this plane of incidence and reflects through this exit facet, this two parts light is made to be deflected to the side of these lens, thus realize directed bright dipping and can be used for the metope illuminations such as blackboard, and because this lens lighting of the direct transmission of light is on blackboard, effectively raise the occupation rate of blackboard glazed thread, in addition, due to without the need to arranging special aluminium reflection shield again, thus this LED that can be used for blackboard illumination is made also to have the simple advantage of structure.
Accompanying drawing explanation
Fig. 1 is the cross section index path that can be used for the LED of blackboard illumination of the utility model first embodiment.
Fig. 2 is the stereogram of the LED that can be used for blackboard illumination shown in Fig. 1.
Description of reference numerals:
10 lens 20 LED light source plate 11 bottom surfaces
12 exit facet 13 side 14 planes of incidence
141 refraction section 142 guide section 21 LED light sources
Detailed description of the invention
Fig. 1 is the index path that can be used for the LED of blackboard illumination of the utility model first embodiment, this LED that can be used for blackboard illumination comprises light source board 20 and is arranged on the lens 10 above this light source board 20, this light source board 20 is provided with LED light source 21, these lens comprise bottom surface 11, be positioned at exit facet 12 above this bottom surface 11 and side 13, and this bottom surface 11 this light source board 20 almost parallel is arranged.
Please refer to Fig. 1, this exit facet 12 this bottom surface 11 relative is obliquely installed, and the bottom of this exit facet 12 is connected with the side of this bottom surface 11, and the drop shadow spread of this exit facet 12 on this bottom surface 11 covers this LED light source 21; With the width of this light source board 20 for x-axis, with the direction of this light source board 20 place plane vertical for y-axis, the bi-exponential attenuation equation of this exit facet 12 is: y=0.56exp (-x/1.26)+1.6exp (-x/3.86)-2.
Please refer to Fig. 1, the opposite side of this bottom surface 11 is connected with the bottom of this side 13, the top of this side 13 is connected with the top of this exit facet 12, this side 13 is towards the globoidal structure of the direction projection away from this exit facet 12, this side 13 tangent line everywhere all tilts towards the direction away from this LED light source 21, and the curvature of this side 13 increases gradually on the direction away from this bottom surface 11.The bi-exponential attenuation equation of this side 13 is: y=-6.1exp (x/3.27)+6.37.
Please refer to Fig. 1, this bottom surface 11 is provided with the plane of incidence 14 to these lens 10 indent, and this plane of incidence 14 is arranged on the top of this LED light source 21.This plane of incidence 14 comprises refraction section 141 and guide section 142, and this refraction section 141 is connected with this guide section 142, and in this junction, the angle between this refraction section 141 and this guide section 142 is acute angle.This refraction section 141 is positioned at directly over this LED light source 21, this refraction section 141 reflects towards this exit facet 12 for the light sent by this LED light source 21, this exit facet 12 has the curved-surface structure corresponding with this refraction section 141 to make most of light penetrate this lens 10 through this exit facet 12, this refraction section 141 is the globoidal structure protruded out towards this LED light source 21, and this refraction section 141 forms convex lens structures with this exit facet 12.This guide section 142 is between this LED light source 21 and this side 13, this guide section 142 this light source board 21 relative is arranged in the direction surface thereof near this LED light source 21, this guide section 142 makes it irradiate towards this side 13 for the some light reflecting this LED light source 21 and send, and this side 13 is for towards this exit facet 12 reflection ray.
Please refer to Fig. 2, these lens 10 and this light source board 20 are string configuration, and this light source board 20 is provided with many LED light sources 21 along the arrangement of this light source board 20 length direction.
In sum, this LED that can be used for blackboard illumination is by arranging this lens 10, the light part that this LED light source 21 sends is refracted on this side 13 through the guide section 142 of this plane of incidence 14, this some light reflexes on this exit facet 12 and reflects through this exit facet 12 by this side 13, another part light is refracted on this exit facet 12 through the refraction section 141 of this plane of incidence 14 and reflects through this exit facet 12, this two parts light is made to be deflected to the side of these lens 10, thus realize directed bright dipping and can be used for the metope illuminations such as blackboard, and be irradiated on blackboard due to these lens 10 of the direct transmission of light, effectively raise the occupation rate of blackboard glazed thread, in addition, due to without the need to arranging special aluminium reflection shield again, thus this LED that can be used for blackboard illumination is made also to have the simple advantage of structure.
These are only preferred embodiment of the present utility model above, not in order to limit the utility model, any those skilled in the art, not departing from this programme technical scope, can work as and utilize the technology contents of above-mentioned exposure to be the Equivalent embodiments of equal change as few modifications.In every case for departing from technical solutions of the utility model content, according to the utility model technical spirit to any amendment made for any of the above embodiments, equivalent replacements, improvement etc., all should be included within scope that the utility model protects.
Claims (9)
1. one kind can be used for the LED of blackboard illumination, comprise light source board and be arranged on the lens above this light source board, this light source board is provided with LED light source, these lens comprise bottom surface, be positioned at the exit facet above this bottom surface and side, it is characterized in that: this bottom surface this light source board almost parallel is arranged, this exit facet relatively this inclined bottom surface is arranged, the bottom of this exit facet is connected with the side of this bottom surface, the opposite side of this bottom surface is connected with the bottom of this side, the top of this side is connected with the top of this exit facet, this bottom surface is provided with the plane of incidence to this lens indent, this plane of incidence is arranged on the top of this LED light source, this plane of incidence comprises refraction section and guide section, this refraction section is positioned at directly over this LED light source, the light that this refraction section is used for this LED light source to send reflects towards this exit facet, this exit facet has the curved-surface structure corresponding with this refraction section to make most of light penetrate this lens through this exit facet, this guide section is between this LED light source and this side, this guide section makes it towards this side-irradiation for the some light reflecting this LED light source and send, this side is used for towards this exit facet reflection ray.
2. the LED that can be used for blackboard illumination according to claim 1, is characterized in that: this guide section relatively this light source board is arranged in the direction surface thereof near this LED light source.
3. the LED that can be used for blackboard illumination according to claim 2, it is characterized in that: this refraction section is the globoidal structure protruded out towards this LED light source, this refraction section and this exit facet form convex lens structures.
4. the LED that can be used for blackboard illumination according to claim 2, it is characterized in that: this refraction section is connected with this guide section, and in this junction, the angle between this refraction section and this guide section is acute angle.
5. the LED that can be used for blackboard illumination according to claim 1, it is characterized in that: this side is towards the globoidal structure of the direction projection away from this exit facet, this side tangent line everywhere all tilts towards the direction away from this LED light source, and the curvature of this side is increasing gradually away from the direction of this bottom surface.
6. the LED that can be used for blackboard illumination according to claim 1, is characterized in that: the drop shadow spread of this exit facet on this bottom surface covers this LED light source.
7. the LED that can be used for blackboard illumination according to claim 1, is characterized in that: these lens and this light source board are string configuration, and this light source board is provided with many LED light sources along this light source board length direction training arrangement.
8. the LED that can be used for blackboard illumination according to claim 1, it is characterized in that: with the width of this light source board for x-axis, with the direction of this light source board place plane vertical for y-axis, the bi-exponential attenuation equation of this exit facet is: y=0.56exp (-x/1.26)+1.6exp (-x/3.86)-2.
9. the LED that can be used for blackboard illumination according to claim 8, is characterized in that: the bi-exponential attenuation equation of this side is: y=-6.1exp (x/3.27)+6.37.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420568419.2U CN204164819U (en) | 2014-09-29 | 2014-09-29 | Can be used for the LED of blackboard illumination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420568419.2U CN204164819U (en) | 2014-09-29 | 2014-09-29 | Can be used for the LED of blackboard illumination |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204164819U true CN204164819U (en) | 2015-02-18 |
Family
ID=52538505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420568419.2U Active CN204164819U (en) | 2014-09-29 | 2014-09-29 | Can be used for the LED of blackboard illumination |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204164819U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104990012A (en) * | 2015-07-22 | 2015-10-21 | 厦门李氏兄弟有限公司 | LED blackboard lamp and LED blackboard lamp assembly using LED blackboard lamp |
| CN105042444A (en) * | 2015-08-31 | 2015-11-11 | 漳州立达信灯具有限公司 | Blackboard LED lamp |
| CN105333397A (en) * | 2015-12-02 | 2016-02-17 | 欧普照明股份有限公司 | Spreadlight lens and lighting lamp with spreadlight lens |
| CN105351822A (en) * | 2015-11-18 | 2016-02-24 | 厦门立达信照明有限公司 | LED blackboard lamp |
| CN113310031A (en) * | 2021-05-08 | 2021-08-27 | 江苏大学 | Polarizing lens of LED blackboard lamp |
-
2014
- 2014-09-29 CN CN201420568419.2U patent/CN204164819U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104990012A (en) * | 2015-07-22 | 2015-10-21 | 厦门李氏兄弟有限公司 | LED blackboard lamp and LED blackboard lamp assembly using LED blackboard lamp |
| CN105042444A (en) * | 2015-08-31 | 2015-11-11 | 漳州立达信灯具有限公司 | Blackboard LED lamp |
| CN105351822A (en) * | 2015-11-18 | 2016-02-24 | 厦门立达信照明有限公司 | LED blackboard lamp |
| CN105333397A (en) * | 2015-12-02 | 2016-02-17 | 欧普照明股份有限公司 | Spreadlight lens and lighting lamp with spreadlight lens |
| CN105333397B (en) * | 2015-12-02 | 2023-12-29 | 欧普照明股份有限公司 | Polarizing lens and lighting lamp with same |
| CN113310031A (en) * | 2021-05-08 | 2021-08-27 | 江苏大学 | Polarizing lens of LED blackboard lamp |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204164819U (en) | Can be used for the LED of blackboard illumination | |
| US9518705B2 (en) | Lens and an illumination device having the lens | |
| US20160377258A1 (en) | Spread light lens and led strip lights having same | |
| CN105042444B (en) | Blackboard LED light | |
| CN104976552A (en) | Lens device and LED light fixture | |
| CN102072460B (en) | Lens for increasing spacing height ratio and improving illumination uniformity of light emitting diode (LED) lamp | |
| CN106151924B (en) | A kind of spreadlight lens and LED bar graph lamp | |
| US9377166B2 (en) | Lens, LED module and illumination system having same | |
| CN204665080U (en) | Blackboard lighting lamp | |
| CN102777777B (en) | Lighting device and there is the illuminator of this lighting device | |
| JP2012182117A (en) | Tubular lighting fixture, casing for tubular lighting fixture and both-side inner illumination-type signboard | |
| CN204986739U (en) | Blackboard LED lamp | |
| CN105805696A (en) | Lens, illuminating device provided with lens, and light guiding cover | |
| CN104676462B (en) | Lens and lighting device | |
| KR101394476B1 (en) | Led lens for flood light of sign board | |
| CN204717510U (en) | A kind of lens devices and LED lamp | |
| TW201502435A (en) | LED lamp | |
| KR101469620B1 (en) | Led lens for flood light of sign board | |
| WO2017092604A1 (en) | Led lamp | |
| CN209977753U (en) | Strip-shaped lamp | |
| CN210135535U (en) | Billboard lamp lens that illumination rate is high | |
| CN203477962U (en) | LED fluorescent lamp | |
| CN210219637U (en) | Lens and blackboard lamp | |
| CN104075246B (en) | Mine lamp reflector and there is the illuminator of this mine lamp reflector | |
| CN105020676B (en) | A kind of optical lens |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170527 Address after: The Lake District of Xiamen City, Fujian province 361010 Fang Hubei two road 1511, five floor Patentee after: LEELEDS LIGHTING (XIAMEN) CO., LTD. Address before: 363999 Xingda Road, Fujian city of Zhangzhou province Changtai Xingtai County Development Zone Patentee before: Leedarson Green Lighting Co., Ltd. |