CN107917364B - LED writing board lamp - Google Patents
LED writing board lamp Download PDFInfo
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- CN107917364B CN107917364B CN201711021535.7A CN201711021535A CN107917364B CN 107917364 B CN107917364 B CN 107917364B CN 201711021535 A CN201711021535 A CN 201711021535A CN 107917364 B CN107917364 B CN 107917364B
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- light distribution
- lamp strip
- lamp
- strip
- narrow
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L1/00—Repeatedly-usable boards or tablets for writing or drawing
- B43L1/004—Repeatedly-usable boards or tablets for writing or drawing with illuminating devices
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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
- F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
- F21V13/02—Combinations of only two kinds of elements
- F21V13/04—Combinations of only two kinds of elements the elements being reflectors and refractors
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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
- F21V19/00—Fastening of light sources or lamp holders
- F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
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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
- F21V19/00—Fastening of light sources or lamp holders
- F21V19/0075—Fastening of light sources or lamp holders of tubular light sources, e.g. ring-shaped fluorescent light sources
- F21V19/008—Fastening of light sources or lamp holders of tubular light sources, e.g. ring-shaped fluorescent light sources of straight tubular light sources, e.g. straight fluorescent tubes, soffit lamps
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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
- F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
- F21V33/0004—Personal or domestic articles
- F21V33/0048—Office articles, e.g. bookmarks, desk lamps with drawers, stands for books or music scores
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Planar Illumination Modules (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
Abstract
The invention relates to an LED writing board lamp, which comprises a lamp body shell and is characterized in that: a wide light distribution lamp strip and a narrow light distribution lamp strip are mounted on the lamp body shell, the narrow light distribution lamp strip is mounted on one side close to the illuminated surface, the mounting horizontal height of the narrow light distribution lamp strip is higher than that of the wide light distribution lamp strip, and the narrow light distribution lamp strip is symmetrical in narrow light distribution; the wide light distribution lamp strip is arranged on one side far away from the illuminated surface, a shading structure is arranged on one side, far away from the light emitting surface of the lamp body shell, of the wide light distribution lamp strip, and the wide light distribution lamp strip is asymmetric and wide in light distribution. The invention can improve the light uniformity on the writing board and avoid the influence of glare.
Description
Technical Field
The invention relates to an LED writing board lamp, and belongs to the technical field of LED illumination.
Background
The writing board plays an important role in teaching activities in classrooms, and most of primary schools and universities mainly take writing board teaching as a main point at present. Therefore, a good writing board lamp or writing board lighting design is important, however, if the light uniformity or illumination of the writing board lamp is not enough, the teaching effect is not only affected, but also serious damage is caused to the eyesight of young students. In this case, the distribution of the light intensity of the tablet lamp and the mounting position of the tablet lamp are important.
Most of the traditional writing board lamps adopt a fluorescent lamp tube mode, a light distribution lampshade is additionally arranged, light is emitted by 360 degrees through a lamp tube and then reflected by a reflector to the writing board, a partial light distribution structure can be realized to a certain extent, but because the light angle is not accurately calculated, light with a certain proportion is wasted, and the uniformity of light distribution is not ideal. At present, manufacturers in the market use LED lamp beads to solve the problem of uniformity of illumination on a writing board by designing corresponding polarized lenses, but due to the limitation of all aspects, the uniformity is difficult to be made ideal.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides an LED writing board lamp which can improve the uniformity of light on a writing board and avoid the influence of glare.
According to the technical scheme provided by the invention, the LED writing board lamp comprises a lamp body shell, and is characterized in that: a wide light distribution lamp strip and a narrow light distribution lamp strip are mounted on the lamp body shell, the narrow light distribution lamp strip is mounted on one side close to the illuminated surface, the mounting horizontal height of the narrow light distribution lamp strip is higher than that of the wide light distribution lamp strip, and the narrow light distribution lamp strip is symmetrical in narrow light distribution; the wide light distribution lamp strip is arranged on one side far away from the illuminated surface, a shading structure is arranged on one side, far away from the light emitting surface of the lamp body shell, of the wide light distribution lamp strip, and the wide light distribution lamp strip is asymmetric and wide in light distribution.
Furthermore, the shading structure is including setting up in the long limit of wide grading lamp strip lateral part and connecting in the short side of long limit bottom.
Further, the length of the short side of the shading structure is 25-35 mm, preferably 28.7 mm; the length of the long side is 55-65 mm, preferably 58.6 mm.
Further, when the narrow light distribution lamp strip is installed and used, the included angle between the normal line of the narrow light distribution lamp strip and the vertical plane is 15-20 degrees, and 16 degrees are preferred.
Furthermore, the included angle between the installation planes of the wide light distribution lamp strip and the narrow light distribution lamp strip is 10-20 degrees, and preferably 10 degrees.
Furthermore, an included angle α between the normal line of the narrow light distribution light bar and the horizontal plane is 72-80 degrees, and preferably 76 degrees.
Furthermore, the ratio of the relative light intensity of the wide light distribution strip to the narrow light distribution strip is 1: 2.5-1: 5, and preferably 1: 3.5.
Further, when the narrow light distribution lamp strip is installed and used, the horizontal distance from the center of the narrow light distribution lamp strip to the illuminated surface is h2, h2=80 mm-690 mm, and the preferred distance is 500 mm; the vertical distance between the center of the narrow light distribution strip and the upper edge of the illuminated surface is h1, h1=160 mm-260 mm, and preferably 240 mm.
Furthermore, the inner side surface of the shading structure is a reflecting surface.
Furthermore, a lens is arranged on the narrow light distribution lamp strip.
The LED writing board lamp adopts a double-lamp-strip scheme, so that the light uniformity on the writing board can be improved; in addition, a lens mode is matched, and a light reflecting structure is adopted, so that the uniformity is improved, and the influence of glare on a teacher is also considered.
Drawings
Fig. 1 is a schematic structural view of an LED writing board lamp according to the present invention.
FIG. 2 is a diagram of the status of the LED tablet light of the present invention.
FIG. 3 is a schematic diagram of the use of the LED tablet light of the present invention.
FIG. 4 is a light distribution diagram of the LED tablet lamp according to the present invention.
Description of reference numerals: the LED lamp comprises a 1-wide light distribution lamp strip, a 2-narrow light distribution lamp strip, a 3-lamp body shell, a 4-illuminated surface, a 5-shading structure and a 6-lens.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1, the LED writing board lamp of the present invention adopts a biased light distribution structure, and is suitable for a linear lamp; the LED lamp mainly comprises a lamp body shell 3, a wide light distribution lamp strip 1 and a narrow light distribution lamp strip 2 which are arranged in the lamp body shell 3, wherein the narrow light distribution lamp strip 2 is arranged on one side close to a lighted surface 4, and the installation horizontal height of the narrow light distribution lamp strip 2 is higher than that of the wide light distribution lamp strip 1; the horizontal distance between the center of the narrow light distribution lamp strip 2 and the illuminated surface 4 is H2, H2=80 mm-690 mm, the vertical distance between the center of the narrow light distribution lamp strip 2 and the upper edge of the illuminated surface 4 is H1, H1=160 mm-260 mm, and the height of the illuminated surface 4 is H; the narrow light distribution lamp strip 2 is symmetrical in narrow light distribution (Lambert distribution, the light emitting angle is about 120 degrees), and high illumination is mainly formed at the upper part of the illuminated surface 4; the wide light distribution lamp strip 1 is installed on one side far away from a plane 4 to be illuminated, the shading structure 5 is arranged on one side, far away from a light outlet surface of the lamp body shell 3, of the wide light distribution lamp strip 1, the shading structure 5 comprises a long edge arranged on the side portion of the wide light distribution lamp strip 1 and a short edge connected to the bottom of the long edge, and the shading structure 5 can play a role in shading and emitting light at the same time, so that the wide light distribution lamp strip 1 is asymmetric and narrow in light distribution and the purpose is to form high illumination at the lower portion of. After the illuminance formed by the wide light distribution lamp strip 1 and the narrow light distribution lamp strip is superposed, the illuminance of the whole illuminated surface 4 is relatively uniform.
When the narrow light distribution lamp strip is installed and used, the included angle between the normal line of the narrow light distribution lamp strip 2 and the vertical plane is 15-20 degrees, and the optimal included angle is 16 degrees.
The short side and the long side of the light shielding structure 5 may be straight or not, and may be perpendicular to the bottom of the light shielding structure 5 or not. The inner side surface of the shading structure 5 is a reflecting surface, and the reflecting surface is subjected to aluminum natural color anodic oxidation or is sprayed with white paint or reflective paint according to needs.
The length of the short side of the shading structure 5 is 25-35 mm, the optimal length is 28.7mm, and the length of the long side is 55-65 mm, the optimal length is 58.6 mm.
The included angle between the installation planes of the wide light distribution lamp strip 1 and the narrow light distribution lamp strip 2 is 10-20 degrees, and the optimal angle is 10 degrees.
As shown in FIG. 1, the included angle α between the normal of the narrow light distribution light bar 2 and the horizontal plane is 72-80, and the optimal included angle is 76 degrees.
The ratio of the relative light intensity of the wide light distribution lamp strip 1 to the relative light intensity of the narrow light distribution lamp strip 2 is 1: 2.5-1: 5, and the optimal ratio is 1: 3.5.
The optimal installation positions of the writing board lamp and the writing board are that the horizontal distance from the center of the narrow light distribution lamp bar 2 to the writing board is 50cm, the vertical distance from the center of the narrow light distribution lamp bar 2 to the upper edge of the writing board is 24cm, the length of the short side of the shading structure 5 is 28.7mm, the length of the long side is 58.6mm, the included angle between the installation planes of the wide light distribution lamp bar 1 and the narrow light distribution lamp bar 2 is 10 degrees, the included angle α between the normal line of the narrow light distribution lamp bar 2 and the horizontal plane is 74 degrees, the ratio of the relative light intensity of the wide light distribution lamp bar 1 and the narrow light distribution lamp bar 2 is 1:3.5, the included angle between the normal line of the narrow light distribution lamp bar 2 and the vertical plane is 16 degrees, and the illuminance.
As shown in fig. 1, a lens 6 is further disposed on the narrow light distribution strip 2.
Claims (10)
1. The utility model provides a LED clipboard lamp, includes lamp body shell (3), characterized by: a wide light distribution lamp strip (1) and a narrow light distribution lamp strip (2) are mounted on the lamp body shell (3), the narrow light distribution lamp strip (2) is mounted on one side close to the illuminated surface (4), the mounting horizontal height of the narrow light distribution lamp strip (2) is higher than that of the wide light distribution lamp strip (1), and the narrow light distribution lamp strip (2) is symmetrical in narrow light distribution; the wide light distribution lamp strip (1) is arranged on one side far away from the illuminated surface (4), a shading structure (5) is arranged on one side, far away from the light emergent surface of the lamp body shell (3), of the wide light distribution lamp strip (1), and the wide light distribution lamp strip (1) is asymmetric and wide in light distribution.
2. The LED tablet lamp of claim 1, wherein: the shading structure (5) comprises a long edge arranged on the side part of the wide light distribution lamp strip (1) and a short edge connected to the bottom of the long edge.
3. The LED tablet lamp of claim 2, wherein: the length of the short side of the shading structure (5) is 25-35 mm, and the length of the long side is 55-65 mm.
4. The LED tablet lamp of claim 1, wherein: when the installation is used, the included angle between the normal of narrow light distribution lamp strip (2) and the vertical plane is 15-20 degrees.
5. The LED tablet lamp of claim 1, wherein: the included angle of the installation plane of the wide light distribution lamp strip (1) and the narrow light distribution lamp strip (2) is 10-20 degrees.
6. The LED writing board lamp as claimed in claim 1, wherein the angle α between the normal of the narrow light distribution strip (2) and the horizontal plane is 72-80 degrees.
7. The LED tablet lamp of claim 1, wherein: the ratio of the relative light intensity of the wide light distribution lamp strip (1) to the relative light intensity of the narrow light distribution lamp strip (2) is 1: 2.5-1: 5.
8. The LED tablet lamp of claim 1, wherein: when the narrow light distribution lamp strip is installed and used, the horizontal distance from the center of the narrow light distribution lamp strip (2) to the illuminated surface (4) is h2, and h2=80 mm-690 mm; the vertical distance between the center of the narrow light distribution lamp strip (2) and the upper edge of the illuminated surface (4) is h1, and h1=160 mm-260 mm.
9. The LED tablet lamp of claim 1, wherein: the inner side surface of the shading structure (5) is a reflecting surface.
10. The LED tablet lamp of claim 1, wherein: and a lens (6) is arranged on the narrow light distribution lamp strip (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711021535.7A CN107917364B (en) | 2017-10-27 | 2017-10-27 | LED writing board lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711021535.7A CN107917364B (en) | 2017-10-27 | 2017-10-27 | LED writing board lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107917364A CN107917364A (en) | 2018-04-17 |
| CN107917364B true CN107917364B (en) | 2020-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711021535.7A Active CN107917364B (en) | 2017-10-27 | 2017-10-27 | LED writing board lamp |
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| Country | Link |
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| CN (1) | CN107917364B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109080324A (en) * | 2018-09-27 | 2018-12-25 | 杭州迈杰教育科技有限公司 | Board of education with illumination functions |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203744011U (en) * | 2014-01-08 | 2014-07-30 | 中国计量学院 | LED blackboard lamp achieving uniform illumination |
| CN103727466A (en) * | 2014-01-08 | 2014-04-16 | 中国计量学院 | LED blackboard lamp capable of achieving uniform lighting |
| CN103982802B (en) * | 2014-05-28 | 2017-06-06 | 深圳市九洲光电科技有限公司 | A kind of LED blackboard lightses |
| CN204459934U (en) * | 2015-02-03 | 2015-07-08 | 李海龙 | New type blackboard lamp |
| CN105065978B (en) * | 2015-07-23 | 2019-04-02 | 漳州立达信光电子科技有限公司 | Reflective blackboard lights |
| CN106696542A (en) * | 2015-07-28 | 2017-05-24 | 李海龙 | Writing board component and teaching board comprising writing board component |
| CN105180039B (en) * | 2015-09-10 | 2018-07-13 | 杭州临安思迪科技有限公司 | A kind of health intelligentization education lighting device |
| CN205782372U (en) * | 2016-07-06 | 2016-12-07 | 李海龙 | New teaching plate headlight |
| CN206145511U (en) * | 2016-11-07 | 2017-05-03 | 苏州光景照明科技有限公司 | Integration LED blackboard lamp |
| CN106764652A (en) * | 2016-11-16 | 2017-05-31 | 南京东晖光电有限公司 | A kind of dual reflective LED blackboard lightses of application classroom illumination |
| CN106885181A (en) * | 2017-03-21 | 2017-06-23 | 江苏新广联光电股份有限公司 | LED clipboard lamps |
| 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 |
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- 2017-10-27 CN CN201711021535.7A patent/CN107917364B/en active Active
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| CN107917364A (en) | 2018-04-17 |
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