JPS54152373A - Lighting device - Google Patents
Lighting deviceInfo
- 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
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
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)
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 |
-
1978
- 1978-05-22 JP JP6005178A patent/JPS54152373A/en active Pending
Cited By (2)
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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