JPS54154996A - Illuminating device for traffic signal - Google Patents
Illuminating device for traffic signalInfo
- Publication number
- JPS54154996A JPS54154996A JP6399178A JP6399178A JPS54154996A JP S54154996 A JPS54154996 A JP S54154996A JP 6399178 A JP6399178 A JP 6399178A JP 6399178 A JP6399178 A JP 6399178A JP S54154996 A JPS54154996 A JP S54154996A
- Authority
- JP
- Japan
- Prior art keywords
- lamp
- discharge lamp
- life time
- electrode type
- wave shielding
- 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.)
- Granted
Links
Landscapes
- Traffic Control Systems (AREA)
Abstract
PURPOSE: To prevent completely the leakage of the electric waves emitted outside the device without impairing the performance of the discharge lamp by enclosing the non-electrode type discharge lamp with the conductive reflector and the wave shielding substance.
CONSTITUTION: Semi-transparent lens body is colored in red, yellow, green or the like to color the white beam emitted from non-electrode type discharge lamp 4. Lamp 4 is located at the back of body 3 with the fluorescent substance emitting the white beam coated on the inner surface, and features higher efficiency and longer life time than the incandescent lamp but with generation of the high-frequency electromagnetic field. Then wave shielding substance 19 featuring both the conducting and light transmissible properties is provided in front of lamp 4, and furthermore reflector 15 made of the electric conductor and surrounding lamp 4 is provided linking to substrate 19. Thus, the electric waves can be prevented from leaking outside the device, securing a high efficiency and long life time of the discharge lamp as well as avoiding the fault on the radio wave.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6399178A JPS5838840B2 (en) | 1978-05-29 | 1978-05-29 | Traffic signal lighting equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6399178A JPS5838840B2 (en) | 1978-05-29 | 1978-05-29 | Traffic signal lighting equipment |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54154996A true JPS54154996A (en) | 1979-12-06 |
JPS5838840B2 JPS5838840B2 (en) | 1983-08-25 |
Family
ID=13245246
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6399178A Expired JPS5838840B2 (en) | 1978-05-29 | 1978-05-29 | Traffic signal lighting equipment |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5838840B2 (en) |
-
1978
- 1978-05-29 JP JP6399178A patent/JPS5838840B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5838840B2 (en) | 1983-08-25 |
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