Title:
【発明の名称】照明装置
Document Type and Number:
Japanese Patent JP3202760
Kind Code:
B2
Abstract:
PURPOSE:To prevent a load from being turned off by the erroneous action of a brightness identification section receiving the light when the load is lighted. CONSTITUTION:The output of a NAND gate 8 is connected to the input terminal of a NAND gate 4 via a diode 11 to disable the signal of a CdS1 when a load is lighted. When the output signal of the NAND gate 8 is the H-level, transistors 9, 10 are turned on respectively, and a load 13 is lighted. The output of the NAND gate 8 is inputted to the input terminal of the NAND gate 4 via the diode 11. When the output of the NAND gate 8 is the H-level, i.e., while the load 13 is lighted, the H-level signal is invariably fed to the input terminal on the signal side of the CdS1 of the NAND gate 4.
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Inventors:
Hideaki Mizumoto
Hamabata Seiji
Daiji Shimosaka
Hamabata Seiji
Daiji Shimosaka
Application Number:
JP802291A
Publication Date:
August 27, 2001
Filing Date:
January 28, 1991
Export Citation:
Assignee:
MATSUSHITA ELECTRIC WORKS,LTD.
Kuroi Denki Co., Ltd.
Kuroi Denki Co., Ltd.
International Classes:
H05B37/02; H01L31/04; (IPC1-7): H05B37/02
Domestic Patent References:
| JP5894796A | ||||
| JP63232297A | ||||
| JP6366899A | ||||
| JP5894795A | ||||
| JP2213091A | ||||
| JP63289795A | ||||
| JP1289094A | ||||
| JP5894797A | ||||
| JP212199U | ||||
| JP2138895U | ||||
| JP6185093U |
Attorney, Agent or Firm:
Keisei Nishikawa (1 person outside)