CN200992071Y - Light-regulated curve blackboard - Google Patents
Light-regulated curve blackboard Download PDFInfo
- Publication number
- CN200992071Y CN200992071Y CN 200620170129 CN200620170129U CN200992071Y CN 200992071 Y CN200992071 Y CN 200992071Y CN 200620170129 CN200620170129 CN 200620170129 CN 200620170129 U CN200620170129 U CN 200620170129U CN 200992071 Y CN200992071 Y CN 200992071Y
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- CN
- China
- Prior art keywords
- blackboard
- light
- bulb
- curved surface
- shadow shield
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- 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.)
- Expired - Fee Related
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Abstract
Disclosed is a light-adjusting surface blackboard, belonging to the writing or painting appliance that can be used repeatedly. A light bulb 2 is arranged in the middle of the blackboard 1, and a shutter is arranged at the side far from the blackboard. The blackboard can be of concave sphere, convex elliptic sphere or arc surface. The light can be reflected in diffuse reflection, so that people at the two sides of the blackboard can see the content on the blackboard clearly, thus reducing or rejecting the specular reflection. A light-induced control apparatus is arranged on the switch circuit of the light bulb 2. The radiation intensity of the light bulb 2 can be adjusted automatically according to the brightness in the room, in order to illuminate the words or pictures on the blackboard clearly. The utility model is simple in structure, low in cost, and convenient in writing, preventing the eyes from the stimulation of strong light reflection, relieving eye fatigue, and helping to protect eyesight.
Description
Affiliated technical field
The utility model relates to a kind ofly reusablely to be write or draws and use blackboard.Be a kind of light modulation Curved surface blackboard specifically.
Background technology
At present, in the classroom or the meeting room blackboard of writing the formula of drilling mostly be the plane blackboard, it is made by plank or glass or cement usually.There is following problem in the plane blackboard: the 1st, and under the irradiation of outdoor light or high light, blackboard produces the minute surface reflection, and the people who is sitting in the blackboard both sides is subjected to catoptrical influence, often can't see content written on the blackboard.The 2nd, when indoor light is dark, is sitting in people than distant positions and just is difficult to offer an explanation literal or figure on the blackboard.Chinese patent notification number: CN2803747Y, the day for announcing: on August 9th, 2006, denomination of invention: " eyeshield blackboard " proposed a kind of blackboard that adopts the arc curved surface.It has changed the visual angle that the people who is sitting in the blackboard both sides watches blackboard, makes the light that is radiated on the blackboard be the diffuse reflection state mostly, has improved the viewing effect of blackboard, has alleviated the stimulation of strong reflection light to eyes.But above-mentioned blackboard is still passive daylighting, under the darker situation of indoor light, people still are difficult to see clearly the content on the blackboard, and the specular light line that still has strip under strong illumination on the arc-shaped surface of this blackboard produces, still can produce the blind area of vision on the part, the viewing effect of its blackboard is still waiting further raising.
Summary of the invention
The purpose of this utility model is defective and the deficiency that overcomes prior art, provides a kind of blackboard glazing degree of illuminating adjustable light modulation Curved surface blackboard.It is simple in structure, can know the displaying content written, and viewing effect is good
Technical solution of the present utility model is: the light modulation Curved surface blackboard, be provided with bulb in the middle part of blackboard, and the side away from blackboard on the bulb is provided with shadow shield.
Blackboard described in the utility model is concave spherical surface or recessed ellipsoidal surface or circular arc camber.
Shadow shield described in the utility model is a spherical plate, and its convex surface is towards bulb.
The utility model can also further be provided with the leaded light groove between shadow shield and blackboard.
It is the tunable optical bulb that the utility model can also make bulb, and the on-off circuit of bulb is provided with the photoinduction light adjusting controller.
The beneficial effects of the utility model are: be provided with in the middle part of blackboard the emitting bulb of light photograph to blackboard, when indoor light was dark, the light of bulb can clearly shine upon literal or the figure on the blackboard.Blackboard can be concave spherical surface or recessed ellipsoidal surface, it also can be circular arc camber, the light that bulb on outdoor high light or the blackboard sends can be the diffuse reflection state like this and penetrate, make the people of blackboard both sides can see content on the blackboard clearly, and can reduce or stop the minute surface reflex of light.The exposure intensity of bulb light can be regulated and control according to room brilliancy automatically by the photoinduction light adjusting controller, and is suitable with the brightness that guarantees illumination on the blackboard.The utility model is simple in structure, and cost of manufacture is lower, writes conveniently, avoids the stimulation of emergency light reflex to eyes, alleviates the visual fatigue phenomenon, helps vision protection.
Description of drawings
Fig. 1 is a section structure schematic diagram of the present utility model
Fig. 2 is the enlarged diagram at bulb 2 positions among Fig. 1
Fig. 3 is the right view when blackboard 1 is for recessed ellipsoidal surface among Fig. 1
The specific embodiment
Below in conjunction with the description of drawings and the specific embodiment the utility model is described in further detail: referring to Fig. 1, Fig. 2, Fig. 3, the utility model light modulation Curved surface blackboard, blackboard 1 can be concave spherical surface or recessed ellipsoidal surface or circular arc camber.Also can be the plane blackboard, but sphere shape blackboard preferably, as the concave spherical surface blackboard, or recessed ellipsoidal surface blackboard as shown in Figure 3.On optical principle, this structure is best to the diffuse effect of light.Certainly the effect with the circular arc camber blackboard is better than plane blackboard.Be provided with bulb 2 in the middle part of blackboard 1, the side away from blackboard on the bulb 2 is provided with shadow shield 3.Generally speaking, to can be understood as be the symmetrical centre of blackboard 1 vertical and horizontal in the middle part of blackboard 1.When the width of blackboard 1 was big, it was vertical symmetrical centre of blackboard 1 that the middle part of blackboard 1 can be understood as, promptly as required can be on the horizontal center line of blackboard 1 a horizontally set 2-4 bulb 2, even with the brightness on the assurance blackboard 1.According to the shape of blackboard 1, it is circular or oval that shadow shield 3 can be made rectangle, and the effect of shadow shield 3 mainly is to avoid the light of bulb 2 to shine directly into indoor beholder, and the light of bulb 2 is reflexed on the blackboard 1.Shadow shield 3 is a spherical plate, and its convex surface is towards bulb 2, and to increase the reflective surface area of light, shadow shield 3 also can be dull and stereotyped.For light can be shone on the whole blackboard 1 uniformly, also can improve the structure of shadow shield 3, between shadow shield 3 and blackboard 1, be provided with leaded light groove 4.It is the ring-type cone tank at center with bulb 2 that leaded light groove 4 is one, it can be made by reflectorized material, the male cone (strobilus masculinus) of cone tank points to the limit portion of blackboard 1, inner conical surface points to the perspective plane outer of shadow shield 3 on blackboard 1, it can cover the light of bulb 2 scatterings, and the light that bulb 2 is sent reflexes on the blackboard 1 simultaneously.Bulb 2 can be the bulb of tunable optical, and the on-off circuit of bulb 2 is provided with the photoinduction light adjusting controller.When near the illumination luminance shortage the blackboard 1, the photoinduction light adjusting controller is then opened bulb 2 and is illuminated blackboard 1, but and the appropriate regulation intensity of illumination, make blackboard 1 be in best luminance state.
Claims (5)
1. light modulation Curved surface blackboard is characterized in that: be provided with bulb (2) in the middle part of blackboard (1), the side that bulb (2) is gone up away from blackboard is provided with shadow shield (3).
2. light modulation Curved surface blackboard according to claim 1 is characterized in that: blackboard (1) is concave spherical surface or recessed ellipsoidal surface or circular arc camber.
3. light modulation Curved surface blackboard according to claim 1 and 2 is characterized in that: shadow shield (3) is a spherical plate, and its convex surface is towards bulb (2).
4. light modulation Curved surface blackboard according to claim 1 and 2 is characterized in that: be provided with leaded light groove (4) between shadow shield (3) and blackboard (1).
5. light modulation Curved surface blackboard according to claim 1 is characterized in that: bulb (2) is the tunable optical bulb, and the on-off circuit of bulb (2) is provided with the photoinduction light adjusting controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620170129 CN200992071Y (en) | 2006-12-31 | 2006-12-31 | Light-regulated curve blackboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620170129 CN200992071Y (en) | 2006-12-31 | 2006-12-31 | Light-regulated curve blackboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200992071Y true CN200992071Y (en) | 2007-12-19 |
Family
ID=38945147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620170129 Expired - Fee Related CN200992071Y (en) | 2006-12-31 | 2006-12-31 | Light-regulated curve blackboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200992071Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104816566A (en) * | 2015-04-18 | 2015-08-05 | 张秋英 | English teaching blackboard |
| CN106023678A (en) * | 2016-07-03 | 2016-10-12 | 深圳市中幼国际教育科技有限公司 | Intelligent early education apparatus for children |
| CN107914496A (en) * | 2017-11-29 | 2018-04-17 | 朱树彪 | Adjustable cambered surface dustproof blackboard |
| CN109808358A (en) * | 2019-02-26 | 2019-05-28 | 齐齐哈尔大学 | Photosensitive myopia prevention Curved surface blackboard |
-
2006
- 2006-12-31 CN CN 200620170129 patent/CN200992071Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104816566A (en) * | 2015-04-18 | 2015-08-05 | 张秋英 | English teaching blackboard |
| CN106023678A (en) * | 2016-07-03 | 2016-10-12 | 深圳市中幼国际教育科技有限公司 | Intelligent early education apparatus for children |
| CN107914496A (en) * | 2017-11-29 | 2018-04-17 | 朱树彪 | Adjustable cambered surface dustproof blackboard |
| CN109808358A (en) * | 2019-02-26 | 2019-05-28 | 齐齐哈尔大学 | Photosensitive myopia prevention Curved surface blackboard |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |