CN2636211Y - Light illuminance indicator - Google Patents
Light illuminance indicator Download PDFInfo
- Publication number
- CN2636211Y CN2636211Y CN 02266410 CN02266410U CN2636211Y CN 2636211 Y CN2636211 Y CN 2636211Y CN 02266410 CN02266410 CN 02266410 CN 02266410 U CN02266410 U CN 02266410U CN 2636211 Y CN2636211 Y CN 2636211Y
- Authority
- CN
- China
- Prior art keywords
- illuminance
- illumination
- low
- light
- medium
- 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.)
- Expired - Fee Related
Links
- 238000005286 illumination Methods 0.000 claims description 31
- 239000002775 capsule Substances 0.000 claims description 4
- 208000001491 myopia Diseases 0.000 description 2
- 230000004379 myopia Effects 0.000 description 2
- 240000004859 Gamochaeta purpurea Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005375 photometry Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Images
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- Illuminated Signs And Luminous Advertising (AREA)
Abstract
An illuminance display is provided. Five holes turning upward are provided on a small box; two light sensitive resistances and yellow, green, and red LEDs are positioned in the holes and the three LEDs display illuminance (low, medium and high) below 150lux, 150lux to 700lux and above 700lux respectively and are the DC load of the three dynatrons. The upper bias of the dynatron displaying the medium and high illuminance is the light sensitive resistance and the lower bias is an adjustable resistance. A base resistance of the low illuminance dynatron is connected with a collector of the medium illuminance dynatron. A three voltage power, a dry cell and a button cell are all right. The adjustable resistance can be adjusted to display the illuminance in the low, medium and high zones. The utility model adopts the universal components with simple structure and low cost.
Description
Affiliated technical field
The utility model relates to a kind of illuminance display, and the display especially for showing basic, normal, high three area light illumination belongs to small household appliances.
Background technology
The illuminance that suitable reading is write is lux, 150 lux to 700, many students are lower than the illumination read-write down of 150 luxs at home through being everlasting, only a few is done one's homework being higher than under the 700 lux illumination again, go down for a long time to cause myopia, but the many head of a family and student and do not know which type of illumination just meets within the scope between 150 to 700 luxs.Existing product is as " integrated circuit photometry pen ", " myopia prevention Photometer " etc., can only adjust definite to the illumination that whether is lower than 150 luxs and is higher than two kinds of zones, 700 luxs, can not be to below 150 luxs, 150 to 700 luxs and more than 700 luxs (hereinafter to be referred as basic, normal, high) three area light shine into row and adjust to determine.
Summary of the invention
Can not shine into the deficiency that row adjustment is determined to basic, normal, high three area light in order to overcome existing Photometer, the utility model provides a kind of illuminance display, and this display can accurately show basic, normal, high trizonal illuminance.
The technical scheme that its technical matters that solves the utility model adopts is: 5 holes are up arranged on the capsule, two photoresistance and yellow, green, red three light emitting diodes are arranged in the hole, three light emitting diodes show the illumination in basic, normal, high three kinds of zones respectively, and are the DC load of three triodes.The upper offset that shows two triodes of middle and high, illumination is photoresistance, and below-center offset is an adjustable resistance, and low light links to each other the power supply dog days according to the base resistance of triode with the collector of middle illumination triode.
When low light shone, high illumination triode was because of upper offset photoresistance resistance height, and base potential is low, and red light does not work.Middle illumination triode also ends because of same reason, and green light does not work.Because in, low light constitutes Schmidt circuits according to two triodes, middle illumination triode by the time, low light is according to the triode conducting, amber light is bright.The bright demonstration light of amber light is too dark.
During illumination, two photoresistance resistances all reduce, middle illumination triode is big because of the high illumination below-center offset of below-center offset resistance value ratio resistance, first conducting, green light is bright, red light does not work.Because of the Schmidt circuit reason, during middle illumination triode conducting, low light ends according to triode, and amber light goes out.The bright display light of green light is according to moderate.
During high illumination, the photoresistance resistance further reduces, and high illumination triode is because of the base potential conducting of further rising, and red light is bright.Display light shone strong.
High illumination triode is the one-level amplifying circuit, and middle low light is according to being Schmidt circuit, and does not disturb mutually in two circuit common-battery sources, regulates two adjustable resistance resistances and can accurately find transfer point separately, thereby realized the accurate demonstration of basic, normal, high three area light photographs.
The beneficial effects of the utility model are can shine into accurate adjustment of row to basic, normal, high three area light to determine, adopt universal component.Simple in structure, cost is low.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified
Fig. 1 is circuit theory diagrams of the present utility model
Fig. 2 is an outside drawing of the present utility model
Among the figure, 1, capsule, 2, yellow light emitting diode, 3, green light emitting diode, 4, Red LED1,5, low light is according to triode, 6, middle illumination triode, 7, high illumination triode, 8, middle illumination photoresistance, 9, high illumination photoresistance, 10, middle illumination adjustable resistance, 11, high illumination adjustable resistance, 12, base resistance.
Embodiment
Capsule (1) has 5 holes up, is two photoresistance (8,9) and yellow, green, red three light emitting diodes (2,3,4) in the hole.Three diodes are respectively the DC load that shows the triode (5,6,7) of basic, normal, high illumination.In the upper offset of high illumination triode (6,7) be respectively in high illumination photoresistance (8,9), below-center offset be respectively in high illumination adjustable resistance (10,11).Low light is continuous with the collector of middle illumination triode (6) according to the base resistance (12) of triode (5).3 volts of power supplys, dry cell or button cell all can.
Claims (1)
- A kind of illuminance display, 5 holes are up arranged on the capsule, in the hole two photoresistance and three light emitting diodes, it is characterized in that: yellow, green, red three light emitting diodes are respectively the DC load that shows three triodes of basic, normal, high three kinds of area light photographs, the upper offset that shows two triodes of middle and high illumination is photoresistance, below-center offset is an adjustable resistance, and low light is continuous with the collector of middle illumination triode according to the base resistance of triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02266410 CN2636211Y (en) | 2002-08-20 | 2002-08-20 | Light illuminance indicator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02266410 CN2636211Y (en) | 2002-08-20 | 2002-08-20 | Light illuminance indicator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2636211Y true CN2636211Y (en) | 2004-08-25 |
Family
ID=34280970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02266410 Expired - Fee Related CN2636211Y (en) | 2002-08-20 | 2002-08-20 | Light illuminance indicator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2636211Y (en) |
-
2002
- 2002-08-20 CN CN 02266410 patent/CN2636211Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: NO.3 501ROOM 1950 ALLEY YUSHAN ROAD SHANGHAI CITY Free format text: FORMER NAME OR ADDRESS: ROOM 603, NO. 14, LANE 1776, PUDONGZHANGYANG ROAD, SHANGHAI CITY, 200135 |
|
| CP03 | Change of name, title or address |
Patentee address after: 200136 room 3, Lane 1950, Lane 501, Yushan Road, Shanghai Patentee address before: 603 room 14, No. 1776, Zhang Yang Road, Shanghai, Pudong, 200135 |
|
| 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 |