JPS51127694A - Penetration plate for electric light indication board - Google Patents

Penetration plate for electric light indication board

Info

Publication number
JPS51127694A
JPS51127694A JP50051856A JP5185675A JPS51127694A JP S51127694 A JPS51127694 A JP S51127694A JP 50051856 A JP50051856 A JP 50051856A JP 5185675 A JP5185675 A JP 5185675A JP S51127694 A JPS51127694 A JP S51127694A
Authority
JP
Japan
Prior art keywords
electric light
penetration plate
light indication
indication board
sharpness
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
JP50051856A
Other languages
Japanese (ja)
Inventor
Kimiyuki Mitsukuchi
Iwao Moriya
Akio Ogoshi
Takuji Inoue
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.)
Shin Etsu Polymer Co Ltd
Shin Etsu Chemical Co Ltd
Sony Corp
Original Assignee
Shin Etsu Polymer Co Ltd
Shin Etsu Chemical Co Ltd
Sony 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 Shin Etsu Polymer Co Ltd, Shin Etsu Chemical Co Ltd, Sony Corp filed Critical Shin Etsu Polymer Co Ltd
Priority to JP50051856A priority Critical patent/JPS51127694A/en
Publication of JPS51127694A publication Critical patent/JPS51127694A/en
Pending legal-status Critical Current

Links

Landscapes

  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)

Abstract

PURPOSE: To obtain a penetration plate for use of electric light indicator board which is capable of maintaining the sharpness of a faint luminous image and also magnifying the luminous image. This penetration plate is also effective to prevent lowering of luminous image sharpness of various electric light-indicator boards, The image sharpness decreases due to dispersion light in the daylight outdoors or in a very bright room.
COPYRIGHT: (C)1976,JPO&Japio
JP50051856A 1975-04-28 1975-04-28 Penetration plate for electric light indication board Pending JPS51127694A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50051856A JPS51127694A (en) 1975-04-28 1975-04-28 Penetration plate for electric light indication board

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50051856A JPS51127694A (en) 1975-04-28 1975-04-28 Penetration plate for electric light indication board

Publications (1)

Publication Number Publication Date
JPS51127694A true JPS51127694A (en) 1976-11-06

Family

ID=12898492

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50051856A Pending JPS51127694A (en) 1975-04-28 1975-04-28 Penetration plate for electric light indication board

Country Status (1)

Country Link
JP (1) JPS51127694A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59216185A (en) * 1983-05-25 1984-12-06 株式会社日立製作所 Panel for display

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2398799A (en) * 1940-07-19 1946-04-23 Frederick R Miller Light screen

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2398799A (en) * 1940-07-19 1946-04-23 Frederick R Miller Light screen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59216185A (en) * 1983-05-25 1984-12-06 株式会社日立製作所 Panel for display

Similar Documents

Publication Publication Date Title
JPS5338260A (en) Picture display unit
JPS5390661A (en) Indicator for automatic washers
JPS51127694A (en) Penetration plate for electric light indication board
JPS5271131A (en) Circuit for radiation display use
JPS5416930A (en) Background display method for display unit
JPS5295224A (en) Flash illumination means
JPS53107268A (en) Exposing method for fluorescent screen
JPS52120697A (en) Electric colour development display device
JPS52102037A (en) Luminescent display for camera
JPS5241539A (en) Illuminator for use in a slit microscope
JPS5291697A (en) Display device
JPS5211857A (en) Cathode rays display unit
JPS52139316A (en) Picture image display unit
JPS51149332A (en) An automatic marking apparatus
JPS5349907A (en) Narrow-band transmission device
JPS53131030A (en) Data photographing system for camera
JPS53146698A (en) Printed matter inspecting apparatus
JPS53121516A (en) Display switching device
JPS5234626A (en) Picture quality compensation equipment
JPS5437728A (en) Camera provided with device of identifying operation mode with display means by sound
JPS5424598A (en) Display unit
JPS5250614A (en) Control system of scanning electronic beam quantity
JPS53133375A (en) Photo ecthing method
JPS5421197A (en) Display unit
JPS54564A (en) Color receiving tube and its manufacture