JPS5492229A - Flashing display device - Google Patents
Flashing display deviceInfo
- Publication number
- JPS5492229A JPS5492229A JP16034177A JP16034177A JPS5492229A JP S5492229 A JPS5492229 A JP S5492229A JP 16034177 A JP16034177 A JP 16034177A JP 16034177 A JP16034177 A JP 16034177A JP S5492229 A JPS5492229 A JP S5492229A
- Authority
- JP
- Japan
- Prior art keywords
- light
- liquid crystal
- led
- place
- flashing
- 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
Abstract
PURPOSE: To enable flashing of light to be distinctly observed irrespective of the darkness and brightness of the place by using a display window which emits the light of a light emitting member toward the outside, an electrical control means periodically changing the transmittance of light and means of reflecting the external light having transmitted through the display window to the display window.
CONSTITUTION: At the same instant when a self timer actuates, a switch closes to let an LED 2 flash. Since pulseform voltage is also applied to liquid crystal 8, the liquid crystal actuates as well while the LED is emitting light and the combined body of the liquid crystal 8 and polarizing plates 16, 18 becomes transparent. While the LED 2 is off, the liquid crystal 8 does not actuate and cuts off the light. Because of this, red flashing of the LED 2 is visible in a dark place and the external light reflected by a filter 6 appears red or is cut off by the liquid crystal 8 becoming dark, in a bright place. Thereby, flashing of the light may be always distinctly observed irrespective of the brightness or darkness of the place.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16034177A JPS5492229A (en) | 1977-12-28 | 1977-12-28 | Flashing display device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16034177A JPS5492229A (en) | 1977-12-28 | 1977-12-28 | Flashing display device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5492229A true JPS5492229A (en) | 1979-07-21 |
Family
ID=15712879
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16034177A Pending JPS5492229A (en) | 1977-12-28 | 1977-12-28 | Flashing display device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5492229A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58166379A (en) * | 1982-03-29 | 1983-10-01 | 芝浦メカトロニクス株式会社 | Lighting apparatus for liquid crystal display unit |
JPH07302053A (en) * | 1991-01-15 | 1995-11-14 | Illinois Tool Works Inc <Itw> | Display structure readable under sunlight |
-
1977
- 1977-12-28 JP JP16034177A patent/JPS5492229A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58166379A (en) * | 1982-03-29 | 1983-10-01 | 芝浦メカトロニクス株式会社 | Lighting apparatus for liquid crystal display unit |
JPH07302053A (en) * | 1991-01-15 | 1995-11-14 | Illinois Tool Works Inc <Itw> | Display structure readable under sunlight |
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