JPS6427195A - Lighting device - Google Patents

Lighting device

Info

Publication number
JPS6427195A
JPS6427195A JP62180953A JP18095387A JPS6427195A JP S6427195 A JPS6427195 A JP S6427195A JP 62180953 A JP62180953 A JP 62180953A JP 18095387 A JP18095387 A JP 18095387A JP S6427195 A JPS6427195 A JP S6427195A
Authority
JP
Japan
Prior art keywords
light
reference voltage
discharge lamp
inverter
output signal
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
Application number
JP62180953A
Other languages
Japanese (ja)
Inventor
Kunio Kokado
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP62180953A priority Critical patent/JPS6427195A/en
Publication of JPS6427195A publication Critical patent/JPS6427195A/en
Pending legal-status Critical Current

Links

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

PURPOSE:To prevent unnecessary power from being supplied to a lighting device by arranging a light receiving element for receiving light emanated from the lighting device and stopping the operation of an inverter when the output signal of the light receiving element drops to a specified reference voltage. CONSTITUTION:When an inverter 2 works to light a discharge lamp 1, the light L emanated from the discharge lamp 1 is received with a solar cell 6 which outputs a signal 6a commensurate with the amount of the light. The signal 6a, together with a specified reference voltage VR set in a reference voltage generator 7 in control circuit 3A, is inputted to a comparator 9. The comparator compares the output signal 6a with the reference voltage VR from the time point where a delay time set in a timer 8 has elapsed and determines, if the light amount of the discharge lamp 1 runs down and the output signal 6a becomes smaller than the reference voltage VR, than the discharge lamp 1 is broken or its life is close to the end, stops operation of the inverter 2 and prevents unnecessary power from being supplied to the lamp.
JP62180953A 1987-07-22 1987-07-22 Lighting device Pending JPS6427195A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62180953A JPS6427195A (en) 1987-07-22 1987-07-22 Lighting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62180953A JPS6427195A (en) 1987-07-22 1987-07-22 Lighting device

Publications (1)

Publication Number Publication Date
JPS6427195A true JPS6427195A (en) 1989-01-30

Family

ID=16092162

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62180953A Pending JPS6427195A (en) 1987-07-22 1987-07-22 Lighting device

Country Status (1)

Country Link
JP (1) JPS6427195A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007021479A (en) * 2005-07-14 2007-02-01 Ark Co Ltd Sludge dehydrator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007021479A (en) * 2005-07-14 2007-02-01 Ark Co Ltd Sludge dehydrator

Similar Documents

Publication Publication Date Title
DE69532459D1 (en) Provide the solar cell system and intermittent movement device with it
ES479083A1 (en) Dimming systems for discharge lamps
JPS6427195A (en) Lighting device
JPS56122018A (en) Power supply circuit of stroboscopic device
JPS57160371A (en) Transistor inverter device
EP0371439A3 (en) Discharge lamp lighting apparatus for controlling voltage of switching transistor by raising starting voltage
JPS6454698A (en) Lighting device for discharge lamp
JPS52118975A (en) Lighting device for discharge lamp
KR950003077Y1 (en) Power supply apparatus by solar energy
JPS55145434A (en) Automatic switch
JPS6454696A (en) Lighting device for discharge lamp
JPS6472493A (en) Discharge lamp lighting device
JPS6471094A (en) Tunnel illumination adjusting device
JPS6469785A (en) Antifreezing device for pump
JPS6414899A (en) Electric current adjusting method for electric-discharge lamp
JPS5779978A (en) Fixing device of flash
JPS6482493A (en) Lighting device for discharge lamp
JPS6459881A (en) Solid-state laser stabilizer
JPS6486665A (en) Picture reader
JPS6489186A (en) Lighting device for discharge lamp
JPS6448521A (en) Control circuit for exciter for atomic oscillator
JPS57208544A (en) Dimming type flashing device
JPS5493875A (en) Discharge lamp lighting apparatus
JPS52118976A (en) Adjusting and lighting device for discharge lamp
JPS5383363A (en) Discharge lamp lighting apparatus