JPS6424635A - Led lighting system - Google Patents
Led lighting systemInfo
- Publication number
- JPS6424635A JPS6424635A JP18144687A JP18144687A JPS6424635A JP S6424635 A JPS6424635 A JP S6424635A JP 18144687 A JP18144687 A JP 18144687A JP 18144687 A JP18144687 A JP 18144687A JP S6424635 A JPS6424635 A JP S6424635A
- Authority
- JP
- Japan
- Prior art keywords
- leds
- series
- light emitting
- short
- circuit
- 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.)
- Pending
Links
Landscapes
- Structure Of Receivers (AREA)
Abstract
PURPOSE:To reduce the power consumption by providing a short-circuit connecting plural light emitting elements in series mutually, connecting a constant current source circuit in series and using a switch elements so as to short- circuit selectively optional light emitting elements among the light emitting elements. CONSTITUTION:A power system consists of a lighting drive section A and a lighting control section B isolated and independent of each other. The lighting driving section A has two power sources composed of positive and negative power sources, and LEDs 51-5n connected in series with each other between power sources and a constant current source 6 are connected in series. Moreover, phototransistors 71a-7n-1a are connected respectively between each connecting point of the LEDs 51-5n and the negative power supply to constitute a short-circuit path of the LEDs. Thus, the driving current value is made constant independently of the number of driven LEDs 51-5n, thereby reducing the power consumption considerably.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18144687A JPS6424635A (en) | 1987-07-21 | 1987-07-21 | Led lighting system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18144687A JPS6424635A (en) | 1987-07-21 | 1987-07-21 | Led lighting system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6424635A true JPS6424635A (en) | 1989-01-26 |
Family
ID=16100912
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18144687A Pending JPS6424635A (en) | 1987-07-21 | 1987-07-21 | Led lighting system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6424635A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2019060945A (en) * | 2017-09-25 | 2019-04-18 | カシオ計算機株式会社 | Electronic keyboard musical instrument, keyboard light emitting method and keyboard light emitting program |
-
1987
- 1987-07-21 JP JP18144687A patent/JPS6424635A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2019060945A (en) * | 2017-09-25 | 2019-04-18 | カシオ計算機株式会社 | Electronic keyboard musical instrument, keyboard light emitting method and keyboard light emitting program |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
ES2041968T3 (en) | FOOTWEAR. | |
AU4337689A (en) | Supervision and control of airport lighting and ground movements | |
WO2024041671A1 (en) | Camping lantern control circuit | |
CN212644309U (en) | Novel flexible LED light-emitting lamp area | |
JPS6424635A (en) | Led lighting system | |
JPS55127084A (en) | Lighting circuit for light emitting diode | |
JPS5636176A (en) | Light emission diode drive circuit | |
FR2375681A2 (en) | Electroluminescent diode traffic signal - has diodes connected in groups, each group being supplied sequentially from source | |
CN202587463U (en) | A timing positive-negative switching LED circuit | |
JPS5324293A (en) | Dri ving circuit for light emitting diode | |
JPS5330884A (en) | Light emitting diode driving circuit | |
CN220139759U (en) | Nonpolar LED lamp bead, circuit and lamp | |
TW350031B (en) | Decorative lamps | |
CN104315448A (en) | Colorful LED small night lamp | |
CN2158140Y (en) | Voltage regulating timing, time counting & alarming socket | |
SE8702307D0 (en) | ELECTRONIC LIGHT SIGN WITH A NUMBER OF LIGHT LIGHTS ORGANIZED IN ROWS AND COLUMNS | |
CN2641458Y (en) | Multiple route pursuing type soft lamp tube made of LED | |
JPS55149875A (en) | Light emission diode driving circuit | |
JPS56150384A (en) | Illuminating device of electronic watch | |
JPS5440680A (en) | Nephelometer | |
JPS5338281A (en) | Light emitting diode driving circuit | |
CN2861711Y (en) | Luminous diode electric torch | |
CN201014256Y (en) | Luminous bar illuminating by luminous diode | |
JPS5350988A (en) | Driving circuit of light emitting diode | |
JPS54152987A (en) | Light-emitting diode circuit |