CN201057422Y - Even light eyesight test chart lamp box - Google Patents
Even light eyesight test chart lamp box Download PDFInfo
- Publication number
- CN201057422Y CN201057422Y CNU2007200506790U CN200720050679U CN201057422Y CN 201057422 Y CN201057422 Y CN 201057422Y CN U2007200506790 U CNU2007200506790 U CN U2007200506790U CN 200720050679 U CN200720050679 U CN 200720050679U CN 201057422 Y CN201057422 Y CN 201057422Y
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- lamp box
- visual chart
- light source
- table lamp
- vision table
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Abstract
The utility model discloses a dodging visual chart light box, comprising a light source, a light guide plate, a visual chart, a protective bottom plate and a frame, wherein, the light source is a LED light source which is arranged at the side surface of the light guide plate and the visual chart is fixed at the facade of the light guide plate. Compared with the prior art, the utility model has long service life, uniform illumination, light stability with no flicker, light weight and small thickness, provides convenience for an examiner to observe the gesture of an examinee and is able to be charged with battery when the city power supply is interrupted.
Description
Technical field
The utility model relates to medicine equipment, relates in particular to a kind of visual chart lamp box.
Background technology
Adopt that artificially lighting visual chart lamp box is widely used in diagnosis, optometry joins fields such as mirror, health check-up.The means of illumination of visual chart lamp box adopts retro-illumination always, at the positive milky white plate that is printed on visual chart of settling of casing, settles T12 or T8 fluorescent tube and the ballast of two each 30W of cover in casing the inside, visual chart back.There is significant disadvantages in this visual chart lamp box: 1, uneven illumination is even, and 2, there is stroboscopic in light, 3, fluorescent tube is short service life, need often to change fluorescent tube, 4, glass lamp is frangible, the casing volume is big, heavy, carries inconvenience, 5, power of lamp tube is big, and is unfavorable energy-conservation.
The visual chart lamp box is improved, and illumination is even, casing is frivolous, the development of portable visual chart lamp box begins to receive publicity.The applying date is that 2004.6.30, application number are that 200420072857.6 Chinese patent discloses a kind of ultra-thin visual chart lamp box, lighting source adopts CCFL, T4 type fluorescent tube, T5 type fluorescent tube, common fluorescent tube, luminous by LGP, its advantage is that illumination is bright evenly, volume is little, in light weight.
But CCFL, T4 type fluorescent tube, T5 type fluorescent tube or common fluorescent tube that this type of visual chart lamp box adopts all are glass bulb class fluorescent tubes, frangiblely are inconvenient to carry and carry; And the service life of fluorescent tube is short; In addition, the drive circuit complexity, cold-cathode tube need use inverter, and fluorescent tube needs ballast, for these electrical equipment is installed, will increase the thickness and the weight of casing; In addition, do not possess powered battery, just can't work during mains failure.
Summary of the invention
At the problem that prior art exists, the purpose of this utility model is that a kind of long service life of proposition, illumination are even, the even photonic vision table lamp box of the stable no stroboscopic of light.
For realizing above purpose; the technical solution of the utility model is: a kind of even photonic vision table lamp box, comprise light source, even tabula rasa, visual chart, protection base plate and frame, and described light source is a led light source; this light source is installed on the side of even tabula rasa, and described visual chart is fixed on even tabula rasa front.
Described visual chart lamp box also comprises an external potential device.
Described visual chart lamp box is by 220 volts AC-powered, or by dry cell, lithium battery, the storage battery power supply of reserve.
Side at described frame is provided with reflective mirror, and frame is established two annular Button Blocks, and reflective mirror passes through the mirror of its lower end inserting annular Button Block, and the mirror of reflective mirror is being cylindrical, and the angle of reflective mirror can the front and back adjusting.
Described visual chart for printed or air brushing organic polymer plate, plastic sheeting or the optical diffusion film of sighting target.The sighting target of visual chart is for the back of the body is imprinted on the lucite (acrylic), the one side that is printed on sighting target during installation inwardly, wearing and tearing of sighting target in the time of can avoiding using, and need not to be provided with printing opacity protection panel make the lamp box can be thinner.
Around even tabula rasa, be pasted with reflectance coating.
Compared with prior art, the utility model has the advantages that long service life, can reach 50000 hours; Illumination is even, luminous stable no stroboscopic, can eliminate since stroboscopic to testee's visual acuity affected; The light source volume is minimum, and drive circuit is simple, guarantees that the visual chart lamp box can reach not only light but also thin, and does not have fragile part such as glass bulb, is easy to carry; Low voltage drive can be powered by backup battery, can work on when place that does not have civil power or mains failure; Be provided with reflective mirror, the gesture that the tester can observe the testee by reflective mirror is convenient to operation.
Description of drawings
Fig. 1 is a structural representation of the present utility model
Fig. 2 is the even photonic vision table lamp box schematic diagram that is provided with reflective mirror
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
See also Fig. 1, the even photonic vision table lamp box of present embodiment is made up of LED (light emitting diode) light source 1, even tabula rasa 2, visual chart 3, printing opacity protection panel 4, protection base plate 5, frame 6, and size dimension is made by standard.Each LED lamp 1 connects by power circuit; place even tabula rasa 2 sides; the positive visual chart of settling of even tabula rasa; the visual chart outside is provided with printing opacity protection panel; the even tabula rasa back side is provided with the protection base plate; visual chart 3 Pastings or be fixed in screw on the front of even tabula rasa 2 are pasted reflectance coating, to improve the light conversion ratio of even tabula rasa around the even tabula rasa.The sighting target of visual chart can print or air brushing on organic polymer plate, plastic sheeting, optical diffusion film, be fixed on even tabula rasa front then, the visual chart outside is provided with printing opacity protection panel, sighting target is not is not worn and torn and is kept perfectly.Preferably, the sighting target of visual chart can be carried on the back and be imprinted on the lucite (acrylic), the one side that is printed on sighting target during installation inwardly, wearing and tearing of sighting target in the time of can avoiding using, and need not to be provided with printing opacity protection panel make the lamp box can be thinner.Be provided with an external potential device, 220 volts, 110 volts civil powers are converted to the direct current of low-voltage, also can use dry cell, lithium battery, the storage battery power supply of reserve, when mains failure, can work on.
See also Fig. 2, be mounted with reflective mirror 7 in a side of frame 6, frame is established two annular Button Blocks 8, reflective mirror inserts annular Button Block to 9 by the mirror of its lower end, reflective mirror is installed, is unloaded conveniently, and the mirror of reflective mirror can regulate front and back the angle of reflective mirror being cylindrical.The reflective mirror adjustable angle, the gesture that the tester just can observe the testee by reflective mirror, convenient test.
The even tabula rasa that the utility model adopts is a kind of novel leaded light equipment, and this equipment can be with the line source of the face of survey or the area source that spot light changes uniformly light-emitting into; Light source is placed in the side of even tabula rasa, and light source adopts LED, and this class light source luminescent is stable, no stroboscopic, and long service life, volume is little, the parts that do not have tungsten filament, glass bulb etc. to damage easily, improper scrappage is very little, and maintenance cost is low, energy-conserving and environment-protective; Low voltage drive, drive circuit is simple, only needs an external potential device, and 220 volts, 110 volts civil powers are converted to the direct current of low-voltage, also can use dry cell, lithium battery, the storage battery power supply of reserve, can work on when mains failure.
Claims (7)
1. an even photonic vision table lamp box comprises light source, even tabula rasa, visual chart, protection base plate and frame, and it is characterized in that: described light source is a led light source, and this light source is installed on the side of even tabula rasa, and described visual chart is fixed on even tabula rasa front.
2. even photonic vision table lamp box according to claim 1, it is characterized in that: described visual chart lamp box also comprises an external potential device.
3. even photonic vision table lamp box according to claim 1 is characterized in that: described visual chart lamp box is by 220 volts AC-powered, or by dry cell, lithium battery, the storage battery power supply of reserve.
4. even photonic vision table lamp box according to claim 1, it is characterized in that: the side at described frame is provided with reflective mirror, and frame is established two annular Button Blocks, and reflective mirror passes through the mirror of its lower end inserting annular Button Block, the mirror of reflective mirror is being cylindrical, and the angle of reflective mirror can be regulated front and back.
5. even photonic vision table lamp box according to claim 1 is characterized in that: described visual chart for printed or air brushing organic polymer plate, plastic sheeting or the optical diffusion film of sighting target.
6. even photonic vision table lamp box according to claim 1 is characterized in that: the sighting target of described visual chart is for the back of the body is imprinted on the lucite, and the one side that is printed on sighting target during installation inwardly.
7. even photonic vision table lamp box according to claim 1 is characterized in that: be pasted with reflectance coating around even tabula rasa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200506790U CN201057422Y (en) | 2007-04-24 | 2007-04-24 | Even light eyesight test chart lamp box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200506790U CN201057422Y (en) | 2007-04-24 | 2007-04-24 | Even light eyesight test chart lamp box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201057422Y true CN201057422Y (en) | 2008-05-07 |
Family
ID=39426265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200506790U Expired - Fee Related CN201057422Y (en) | 2007-04-24 | 2007-04-24 | Even light eyesight test chart lamp box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201057422Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103782089A (en) * | 2011-09-09 | 2014-05-07 | 赫伯特沃尔德曼两合公司 | Light with a film for altering the radiation characteristics |
| CN105935286A (en) * | 2016-06-03 | 2016-09-14 | 深圳市中幼国际教育科技有限公司 | Visual-impairment testing device for children |
| CN106895311A (en) * | 2017-04-22 | 2017-06-27 | 东莞市视优医疗科技有限公司 | A kind of Multifunctional eyesight table lamp |
| CN107049228A (en) * | 2016-12-31 | 2017-08-18 | 上海复展智能科技股份有限公司 | The adjustable vision testing system of illumination spectrum |
| CN108498064A (en) * | 2018-03-19 | 2018-09-07 | 中国人民解放军空军航空医学研究所 | Digitize bright spot scintillation detection system |
| CN109645952A (en) * | 2017-10-12 | 2019-04-19 | 李长良 | Green background eyesight detects lamp box |
| CN110432859A (en) * | 2019-07-31 | 2019-11-12 | 刘葳 | A kind of vision testing method and device |
| CN106895311B (en) * | 2017-04-22 | 2024-06-28 | 东莞市亮美聚光电科技有限公司 | Multifunctional visual chart lamp |
-
2007
- 2007-04-24 CN CNU2007200506790U patent/CN201057422Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103782089A (en) * | 2011-09-09 | 2014-05-07 | 赫伯特沃尔德曼两合公司 | Light with a film for altering the radiation characteristics |
| CN103782089B (en) * | 2011-09-09 | 2017-02-15 | 赫伯特沃尔德曼两合公司 | Light with a film for altering the radiation characteristics |
| US9746169B2 (en) | 2011-09-09 | 2017-08-29 | Herbert Waldmann Gmbh & Co. Kg | Light with a film for altering the radiation characteristics |
| CN105935286A (en) * | 2016-06-03 | 2016-09-14 | 深圳市中幼国际教育科技有限公司 | Visual-impairment testing device for children |
| CN107049228A (en) * | 2016-12-31 | 2017-08-18 | 上海复展智能科技股份有限公司 | The adjustable vision testing system of illumination spectrum |
| CN106895311A (en) * | 2017-04-22 | 2017-06-27 | 东莞市视优医疗科技有限公司 | A kind of Multifunctional eyesight table lamp |
| CN106895311B (en) * | 2017-04-22 | 2024-06-28 | 东莞市亮美聚光电科技有限公司 | Multifunctional visual chart lamp |
| CN109645952A (en) * | 2017-10-12 | 2019-04-19 | 李长良 | Green background eyesight detects lamp box |
| CN108498064A (en) * | 2018-03-19 | 2018-09-07 | 中国人民解放军空军航空医学研究所 | Digitize bright spot scintillation detection system |
| CN110432859A (en) * | 2019-07-31 | 2019-11-12 | 刘葳 | A kind of vision testing method and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080507 Termination date: 20160424 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |