JPS538909A - Signal - Google Patents

Signal

Info

Publication number
JPS538909A
JPS538909A JP8234376A JP8234376A JPS538909A JP S538909 A JPS538909 A JP S538909A JP 8234376 A JP8234376 A JP 8234376A JP 8234376 A JP8234376 A JP 8234376A JP S538909 A JPS538909 A JP S538909A
Authority
JP
Japan
Prior art keywords
signal
lamp
neighttime
voltage given
lowering voltage
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
JP8234376A
Other languages
Japanese (ja)
Inventor
Masao Kawasaki
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP8234376A priority Critical patent/JPS538909A/en
Publication of JPS538909A publication Critical patent/JPS538909A/en
Pending legal-status Critical Current

Links

Landscapes

  • Audible And Visible Signals (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Traffic Control Systems (AREA)

Abstract

PURPOSE: To lengthen life of a lamp by lowering voltage given to the lamp of a signal in the neighttime.
COPYRIGHT: (C)1978,JPO&Japio
JP8234376A 1976-07-09 1976-07-09 Signal Pending JPS538909A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8234376A JPS538909A (en) 1976-07-09 1976-07-09 Signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8234376A JPS538909A (en) 1976-07-09 1976-07-09 Signal

Publications (1)

Publication Number Publication Date
JPS538909A true JPS538909A (en) 1978-01-26

Family

ID=13771910

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8234376A Pending JPS538909A (en) 1976-07-09 1976-07-09 Signal

Country Status (1)

Country Link
JP (1) JPS538909A (en)

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