JPS54154998A - Illumination device for traffic signal - Google Patents

Illumination device for traffic signal

Info

Publication number
JPS54154998A
JPS54154998A JP6399378A JP6399378A JPS54154998A JP S54154998 A JPS54154998 A JP S54154998A JP 6399378 A JP6399378 A JP 6399378A JP 6399378 A JP6399378 A JP 6399378A JP S54154998 A JPS54154998 A JP S54154998A
Authority
JP
Japan
Prior art keywords
lens
colored
beams
glowing time
colored beams
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
JP6399378A
Other languages
Japanese (ja)
Inventor
Toshiyuki Takeda
Hiroshi Takada
Jun Imai
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 JP6399378A priority Critical patent/JPS54154998A/en
Publication of JPS54154998A publication Critical patent/JPS54154998A/en
Pending legal-status Critical Current

Links

Landscapes

  • Traffic Control Systems (AREA)

Abstract

PURPOSE: To prevent the colorless and transparent lens from shining as if it irradiated the colored beams via the sunlight and the like at the non-glowing time by distributing the color light source to radiate the colored beams at the back of the lens body.
CONSTITUTION: Lens substance 3 attached in front of device main body 1 is colorless and transparent. And color light source 4 distributed at the back body 3 is formed by coating phosphor 9 which emits the colored beams at the glowing time via exciatation of the ultraviolet rays and turns opque at the non-glowing time respectively. Thus, even if the external beams such as the sunlight ot the like enters main body 1 through lens 3, it is reflected by reflector 14 and thus not colored. Furthermore, the greater part of the sumlight coming in through phosphor 9 is cut off, and thus the reflected light is weak. Accordingly, the fact that the colored beams are radiated by the external light at the non-glowing time or lens 3 shines bright can be prevented.
COPYRIGHT: (C)1979,JPO&Japio
JP6399378A 1978-05-29 1978-05-29 Illumination device for traffic signal Pending JPS54154998A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6399378A JPS54154998A (en) 1978-05-29 1978-05-29 Illumination device for traffic signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6399378A JPS54154998A (en) 1978-05-29 1978-05-29 Illumination device for traffic signal

Publications (1)

Publication Number Publication Date
JPS54154998A true JPS54154998A (en) 1979-12-06

Family

ID=13245301

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6399378A Pending JPS54154998A (en) 1978-05-29 1978-05-29 Illumination device for traffic signal

Country Status (1)

Country Link
JP (1) JPS54154998A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6124679A (en) * 1992-05-20 2000-09-26 Cadence Design Systems, Inc. Discharge lamps and methods for making discharge lamps

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6124679A (en) * 1992-05-20 2000-09-26 Cadence Design Systems, Inc. Discharge lamps and methods for making discharge lamps

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