CN105042444B - Blackboard LED Lights - Google Patents
Blackboard LED Lights Download PDFInfo
- Publication number
- CN105042444B CN105042444B CN201510543851.5A CN201510543851A CN105042444B CN 105042444 B CN105042444 B CN 105042444B CN 201510543851 A CN201510543851 A CN 201510543851A CN 105042444 B CN105042444 B CN 105042444B
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- China
- Prior art keywords
- light source
- led light
- exit facet
- incidence
- plane
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- 238000005286 illumination Methods 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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
- F21S8/04—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures
- F21S8/06—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures by suspension
-
- 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
- F21V5/00—Refractors for light sources
- F21V5/04—Refractors for light sources of lens shape
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Planar Illumination Modules (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
Abstract
A blackboard LED lamp comprises an LED light source and a lens, the cross section of the lens is approximately of a quadrilateral structure, the bottom surface of the lens is provided with an incident surface which is positioned above the LED light source so that most of the light emitted by the LED light source enters the incident surface, the top surface of the lens is a first emergent surface which is approximately parallel or obliquely arranged relative to the bottom surface, one side surface of the lens forms a reflecting surface which is used for reflecting the light refracted from the incident surface towards the first emergent surface and enabling the reflected light to be emitted from the first emergent surface, the other side surface of the lens forms a second emergent surface for outwardly refracting the light refracted from the incident surface, the top of the second emergent surface is connected with the first emergent surface, the bottom of the second emergent surface is positioned at one side of the LED light source, and the second emergent surface is integrally arranged in an inclined way towards the direction close to the LED light source. The blackboard LED lamp can irradiate in a polarized mode.
Description
Technical field
The present invention relates to field of LED illumination, especially a kind of blackboard LED light.
Background technique
The blackboard lights in classroom add reflector to carry out light distribution using T8 fluorescent tube at present, with the emergence of LED, will replace T8 lamp
Pipe.Due to the directional lighting that the principle of luminosity of LED generates, point light source light-emitting is easy the factors such as dazzle, and previous reflector is then not
It can share.Therefore need to design new reflector matching LED light source, optical free form surface requires aluminium reflector precision very
Height, so large-scale thick and heavy aluminium reflector greatly challenge technique and cost.Such as authorized announcement date is in February, 2012
08, the Chinese utility model patent of Patent No. 201120205735.X disclosed a kind of blackboard lights, and the utility model discloses
A kind of blackboard lights, including a support construction can be installed on the upside of blackboard or near downside；One bar shaped lampshade, both ends with
Support construction pivot joint is fixed, and the side of Yu Suoshu lampshade is recessed a reflective groove, and the wall surface of the reflective groove is by an at least curved surface
It is formed；One strip light device is set in reflective groove at center, and direction of illumination is at least towards reflective groove.Although adopting
The light distribution of certain angle can be generated with the blackboard lights, but uses the linear light sorurce made of LED light source in use, passing through
Existing reflector is difficult to obtain preferable light distribution, thus needs separately to ward off new diameter.
Summary of the invention
In view of this, it is necessary to provide a kind of blackboard LED light of achievable polarisation irradiation.
The technical solution adopted by the present invention are as follows: a kind of blackboard LED light, including LED light source and lens, the cross section of the lens
The bottom surface of substantially quadrilateral structure, the lens is equipped with the plane of incidence, which is located on the LED light source, so that the LED light
The light that source issues largely enters the plane of incidence, and the top surface of the lens is the first exit facet, and first exit facet is with respect to its bottom
Face is substantially parallel or is obliquely installed, and a side of the lens forms reflecting surface, which is used for towards first exit facet
It reflects from the next light of plane of incidence refraction and projects reflected light line from first exit facet, another side of the lens
Face forms the second exit facet, and second exit facet for reflecting the light come from plane of incidence refraction, second exit facet outward
Top connect with first exit facet, the bottom of second exit facet is located at the side of the LED light source, and second exit facet
The whole direction towards close to the LED light source is obliquely installed.
Compared with prior art, which is incident on by the way that the lens, the light that these LED light sources issue is arranged
After the plane of incidence of the lens, a part goes out after first exit facet refraction after being located at the reflective surface of a side
It penetrates, a part of light is emitted after being directly located at second exit facet refraction of another side, in this way, being biased to light should
The side of lens, further, the whole direction towards close to the LED light source of second exit facet are obliquely installed, so that light
It is more preferably biased to the side of the lens, irradiates demand to meet the polarisation of blackboard surface illumination, and different angle is effectively utilized
The light that the LED light source issues, so that the blackboard LED light also has the advantages that light distribution is uniform.
Detailed description of the invention
Fig. 1 is the perspective view of first embodiment of the invention blackboard LED light.
Fig. 2 is the sectional view of blackboard LED light shown in Fig. 1.
Fig. 3 is the main view of lens in blackboard LED light shown in Fig. 2.
Fig. 4 is the light path schematic diagram of lens shown in Fig. 3.
Description of symbols:
10 LED light source, 20 lens
21 plane of incidence, 211 first plane of incidence
212 second plane of incidence, 22 first exit facet
23 reflecting surface, 24 second exit facet
241 light guide section, 242 concave portion
Specific embodiment
Fig. 1 is the perspective view of first embodiment of the invention blackboard LED light, and Fig. 2 is the sectional view of blackboard LED light shown in Fig. 1,
The blackboard LED light includes LED light source 10 and lens 20.In the present embodiment, which includes plurality of LEDs light source 10, these
LED light source 10 is arranged on the light source board of a strip and arranges in "-" type, which is corresponding light source board setting
String configuration (as shown in Figure 1).
Fig. 2, Fig. 3 are please referred to, for convenience of description, the present embodiment is using the position where the LED light source 10 as bottom.The lens
The bottom surface of 20 cross section substantially quadrilateral structure, the lens 20 is equipped with a plane of incidence 21, the substantially position of the plane of incidence 21
In the LED light source 10 surface and shroud the LED light source 10 so that the LED light source 10 issue light largely enter
The plane of incidence 21.The plane of incidence 21 includes first plane of incidence 211 and second plane of incidence 212, and first plane of incidence 211 and second enter
It penetrates face 212 and forms the groove for accommodating the LED light source 10.First plane of incidence 211 and second plane of incidence 212 are the oblique of two intersections
Face or cambered surface.Incident ray can be divided into two parts by first plane of incidence 211 and second plane of incidence 212, as needed, adjustment
The angle or opposite size of first plane of incidence 211 and second plane of incidence, 212 relative tilt, can issue LED light source 10
Light be more assigned to first plane of incidence 211 or second plane of incidence 212.
Fig. 3 to Fig. 4 is please referred to, the top surface of the lens 20 is the first exit facet 22, and first exit facet 22 is with respect to its bottom surface
It is substantially parallel or be obliquely installed.In the present embodiment, it is preferred that first exit facet 22 is generally planar, first exit facet 22
The substantially parallel plane of incidence 21 setting, which is located at the surface of the LED light source 10 and its projection covers the LED
Light source 10.
Please refer to Fig. 3 to Fig. 4, a side of the lens 20 forms reflecting surface 23, the reflecting surface 23 be used for towards this
The reflection of one exit facet 22 is from the next light of the plane of incidence 21 refraction and projects reflected light line from first exit facet 22.It is excellent
Choosing, which is the cambered surface outwardly protruded.Wherein, first plane of incidence 211 is with respect to the LED light source 10 anti-far from this
The acclivitous setting in side in face 23 is penetrated, which is used to that the light come will to be penetrated from the LED light source 10 anti-towards this
Penetrate the refraction of face 23.In actual use, light after the refraction of first plane of incidence 211 again through the reflecting surface 23 towards this first
Exit facet 22 reflects, and then this some light is emitted to the lower part of blackboard surface after reflecting again at first exit facet 22.
In addition, another side of the lens 20 forms the second exit facet 24, second exit facet 24 for reflecting outward
The light come from second plane of incidence 212 refraction of the plane of incidence 21, the top of second exit facet 24 and first exit facet 22
Connection, the bottom of second exit facet 24 is located at the side of the LED light source 10, and second exit facet, 24 entirety is somebody's turn to do towards close
The direction of LED light source 10 is obliquely installed.In actual use, which is arranged towards the direction of blackboard surface, so that light
Line is reflected towards the top of blackboard surface.Wherein, second plane of incidence 212 is with respect to the LED light source 10 far from second exit facet
The acclivitous setting in 24 side, second plane of incidence 212 is for reflecting another part light towards second exit facet 24.
In addition, second exit facet 24 is equipped with the emergent light for being directed away from 10 direction of LED light source and being biased to first exit facet 22
The light guide section 241 (as shown in Figure 3) of the direction protrusion of line, which, which is arranged, second goes out in first exit facet 22 with this
It penetrates at the position of the connection of face 24.The light guide section 241 is used for light towards the emergent ray of substantially parallel first exit facet 22
Direction refraction.In actual use, farthest apart from the blackboard LED light due to the lower part of blackboard surface, luminous intensity demand is most strong, this is led
More light can be emitted by light portion 241 towards the lower part of blackboard surface, and light is more assigned to the lower part of blackboard surface, from
And make global illumination uniform in effect.Further, second exit facet 24 is in the light guide section 241 underneath towards the LED light
The recess of source 10 forms concave portion 242, which is used to cooperatively form concavees lens structure with second plane of incidence 212, this
Sample, so that some light after second plane of incidence 212 refraction is after the refraction of the concave portion 242 towards the top of blackboard surface
Outgoing.The light guide section 241 and the smooth transition of the concave portion 242.
In conclusion the blackboard LED light is incident on this by the way that the lens 20, the light that these LED light sources 10 issue is arranged
After the plane of incidence 21 of lens 20, a part positioned at the reflecting surface 23 of a side after reflecting through 22 folding of the first exit facet
It is emitted after penetrating, a part of light is emitted after being directly located at second exit facet 24 refraction of another side, in this way, making light
Line is biased to the side of the lens, and further, second exit facet 24 is whole to be set towards the inclination close to the direction of the LED light source 10
It sets, so that light is more preferably biased to the side of the lens 20, to meet the specific demand of blackboard surface illumination, and is effectively utilized not
With the light that the LED light source 10 of angle issues, so that the blackboard LED light also has the advantages that light distribution is uniform.
The above is only presently preferred embodiments of the present invention, is not intended to limit the invention, any those skilled in the art
Do not departing from this programme technical scope, can when using above-mentioned exposure technology contents make few modifications be change on an equal basis it is equivalent
Embodiment.In every case to be detached from technical solution of the present invention content, made to the above embodiment of technical spirit according to the present invention
What modification, equivalent replacement, improvement etc., should be included within the scope of the present invention.
Claims (5)
1. a kind of blackboard LED light, including LED light source and lens, it is characterised in that: the cross section of the lens substantially quadrangle knot
The bottom surface of structure, the lens is equipped with the plane of incidence, which is located on the LED light source, so that the light that the LED light source issues is big
Part enters the plane of incidence, and the top surface of the lens is the first exit facet, and first exit facet is substantially parallel with respect to its bottom surface or inclines
Tiltedly setting, a side of the lens form reflecting surface, which is used to reflect towards first exit facet from the plane of incidence
The next light of refraction simultaneously projects reflected light line from first exit facet, another side of the lens forms the second outgoing
Face, second exit facet for outward reflect from the plane of incidence refraction come light, the top of second exit facet and this first
Exit facet connection, the bottom of second exit facet is located at the side of the LED light source, and second exit facet entirety is somebody's turn to do towards close
The direction of LED light source is obliquely installed；Second exit facet is equipped with the light guide section for being directed away from LED light source direction protrusion, should
Light guide section is used to reflect light towards the direction of the emergent ray of substantially parallel first exit facet, the light guide section be biased to this
The direction of the emergent ray of one exit facet is arranged, which is arranged in the position that first exit facet is connect with second exit facet
Set place；The plane of incidence includes first plane of incidence and second plane of incidence, and first plane of incidence and second plane of incidence, which are formed, accommodates the LED
The groove of light source；Second exit facet is recessed to form concave portion the light guide section underneath towards the LED light source, which uses
In cooperatively forming concavees lens structure with second plane of incidence.
2. blackboard LED light according to claim 1, it is characterised in that: first plane of incidence is with respect to the LED light source separate
The acclivitous setting in the side of the reflecting surface, first plane of incidence are used to reflect a part of light towards the reflecting surface.
3. blackboard LED light according to claim 1, it is characterised in that: second plane of incidence is with respect to the LED light source separate
The acclivitous setting in the side of second exit facet, second plane of incidence are used for another part light towards second exit facet
Refraction.
4. blackboard LED light according to claim 1, it is characterised in that: first exit facet is generally planar, this first goes out
Penetrate face be located at the LED light source surface and its projection cover the LED light source.
5. blackboard LED light according to claim 1, it is characterised in that: including plurality of LEDs light source, the LED light source setting
It is arranged on the light source board of a strip and in "-" type, which corresponds to the string configuration of light source board setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510543851.5A CN105042444B (en) | 2015-08-31 | 2015-08-31 | Blackboard LED Lights |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510543851.5A CN105042444B (en) | 2015-08-31 | 2015-08-31 | Blackboard LED Lights |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105042444A CN105042444A (en) | 2015-11-11 |
| CN105042444B true CN105042444B (en) | 2019-05-07 |
Family
ID=54449236
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510543851.5A Active CN105042444B (en) | 2015-08-31 | 2015-08-31 | Blackboard LED Lights |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105042444B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105782814B (en) * | 2016-04-22 | 2018-04-13 | 深圳磊明科技有限公司 | A kind of lamps and lanterns |
| CN106090651A (en) * | 2016-08-10 | 2016-11-09 | 上海执光医疗科技有限公司 | Diffuse-reflectance lamp panel |
| CN107143778A (en) * | 2017-05-19 | 2017-09-08 | 厦门通士达照明有限公司 | A kind of LED blackboard lightses |
| DE202018101450U1 (en) * | 2018-03-15 | 2019-06-18 | Occhio GmbH | Lens for a lamp and luminaire with such a lens |
| CN109210444A (en) * | 2018-10-31 | 2019-01-15 | 深圳民爆光电技术有限公司 | A kind of LED light |
| CN109489003A (en) * | 2018-12-03 | 2019-03-19 | 深圳市美斯特光电技术有限公司 | Light control element and light supply apparatus |
| CN110375268A (en) * | 2019-07-03 | 2019-10-25 | 中山市领航光电科技有限公司 | Lens and blackboard lights |
| CN112728502B (en) * | 2020-12-31 | 2022-12-06 | 美智光电科技股份有限公司 | Lens and lamp |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008103300A (en) * | 2006-09-21 | 2008-05-01 | Toshiba Lighting & Technology Corp | Led module, and luminaire |
| JP2010224089A (en) * | 2009-03-23 | 2010-10-07 | Brother Ind Ltd | Prism |
| CN102141229B (en) * | 2010-12-15 | 2012-10-10 | 上海三思电子工程有限公司 | Method for designing lens |
| CN102162624B (en) * | 2011-04-08 | 2014-06-18 | 佛山市中山大学研究院 | Lens |
| CN103090309B (en) * | 2011-10-28 | 2017-09-19 | 欧司朗股份有限公司 | Lens and the asymmetrical beam distribution of illumination device with the lens |
| GB2506138B (en) * | 2012-09-20 | 2014-11-19 | Cooper Technologies Co | Lens and light emitting device incorporating a lens |
| CN203731286U (en) * | 2013-12-26 | 2014-07-23 | 四川新力光源股份有限公司 | Led lens |
| CN204164819U (en) * | 2014-09-29 | 2015-02-18 | 立达信绿色照明股份有限公司 | Can be used for the LED of blackboard illumination |
| CN204986739U (en) * | 2015-08-31 | 2016-01-20 | 漳州立达信灯具有限公司 | Blackboard LED lamp |
-
2015
- 2015-08-31 CN CN201510543851.5A patent/CN105042444B/en active Active
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| Publication number | Publication date |
|---|---|
| CN105042444A (en) | 2015-11-11 |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20241230 Address after: 361010 five, 1511 Hubei two road, Huli District, Xiamen, Fujian. Patentee after: Xiamen Lidaxin Digital Education Technology Co.,Ltd. Country or region after: China Address before: 363999 Xingtai Industrial Park, Changtai County Economic Development Zone, Zhangzhou City, Fujian Province Patentee before: LEEDARSON LIGHTING FIXTURES Co.,Ltd. Country or region before: China |
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| TR01 | Transfer of patent right |