JPS54152373A - Lighting device - Google Patents

Lighting device

Info

Publication number
JPS54152373A
JPS54152373A JP6005178A JP6005178A JPS54152373A JP S54152373 A JPS54152373 A JP S54152373A JP 6005178 A JP6005178 A JP 6005178A JP 6005178 A JP6005178 A JP 6005178A JP S54152373 A JPS54152373 A JP S54152373A
Authority
JP
Japan
Prior art keywords
air
bulb
cooling
globe
cool outside
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
JP6005178A
Other languages
Japanese (ja)
Inventor
Katsuaki Tanaka
Kunio Sumiyoshi
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 Power Ltd
Original Assignee
Babcock Hitachi KK
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 Babcock Hitachi KK filed Critical Babcock Hitachi KK
Priority to JP6005178A priority Critical patent/JPS54152373A/en
Publication of JPS54152373A publication Critical patent/JPS54152373A/en
Pending legal-status Critical Current

Links

Landscapes

  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Abstract

PURPOSE: To extend the life of an electric bulb by introducing cool outside air into the cooling air passage formed between the glass globe and the electric bulb.
CONSTITUTION: Cool outside air is introduced into cooling air passageway 14 formed between glass globe 8 and electric bulb 10 installed inside the globe, through air introducing holes 11 made in bulb holder 6 and holder stand 5. When the lighting device is switched on, the air temperature in glass globe 8 rises, but the heated air is discharged through the upper air holes 11 by natural convection and cool outside air is introduced into the lower air introducing holes 11, thus cooling bulb 10 and extending the life of the bulb.
COPYRIGHT: (C)1979,JPO&Japio
JP6005178A 1978-05-22 1978-05-22 Lighting device Pending JPS54152373A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6005178A JPS54152373A (en) 1978-05-22 1978-05-22 Lighting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6005178A JPS54152373A (en) 1978-05-22 1978-05-22 Lighting device

Publications (1)

Publication Number Publication Date
JPS54152373A true JPS54152373A (en) 1979-11-30

Family

ID=13130889

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6005178A Pending JPS54152373A (en) 1978-05-22 1978-05-22 Lighting device

Country Status (1)

Country Link
JP (1) JPS54152373A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6339823U (en) * 1986-08-30 1988-03-15
US5465195A (en) * 1992-07-31 1995-11-07 Robert Bosch Gmbh Headlight for motor vehicles

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6339823U (en) * 1986-08-30 1988-03-15
US5465195A (en) * 1992-07-31 1995-11-07 Robert Bosch Gmbh Headlight for motor vehicles

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