Liquid crystal antidazzle mirror

• US 4,786,145 A
• Filed: 06/20/1986
• Issued: 11/22/1988
• Est. Priority Date: 06/21/1985
• Status: Expired due to Fees

• Current Assignee: Kabushiki Kaisha Tokai RIKA Denki Seisakusho, Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Kabushiki Kaisha Tokai RIKA Denki Seisakusho, Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Takizawa, Kouji, Ohyama, Yasuo, Kawahashi, Akira, Kokubu, Sadao, Iguchi, Shigeru, Demura, Hiroshi
• Primary Examiner(s): Miller, Stanley D.
• Assistant Examiner(s): Phan, Trong Quang
• Application Number:
  US06/876,922
• Time in Patent Office: 886 Days
• Field of Search: 350/331 R, 350/338, 350/342, 350/278, 350/279, 350/283, 350/332, 350/276 R
• US Class Current: 349/195
• CPC Class Codes: B60R 1/088 using a cell of electrically changeable optical characteristic, e.g. liquid-crystal or electrochromic mirrors

Abstract

A liquid crystal antidazzle mirror for supplying a power to liquid crystal drive control circuit when a key plate is inserted into a key cylinder which comprises a key position detecting switch for detecting that the key plate is inserted into the key cylinder, and an initializing circuit for initializing the liquid crystal drive control circuit to either special mode of predetermined antidazzle or dazzle state upon receiving a detection signal of the key position detecting switch. Thus, the antidazzle mirror can automatically initialize the antidazzle mirror to either special mode of a predetermined antidazzle and dazzle states when power is supplied from a battery.

Claims

1. A liquid crystal antidazzle mirror having a key position detecting switch for supplying power to a liquid crystal drive control circuit when a key plate is inserted into the key cylinder, the mirror comprising:

an initializing circuit having a preset capacitor and a preset resistor connected between the key position detecting switch and the liquid crystal drive control circuit for initializing the liquid crystal drive control circuit to a preselected one of predetermined antidazzle and dazzle states upon receiving a detection signal of the key position detection switch.

2. The liquid crystal antidazzle mirror according to claim 1, wherein said preselected one of the predetermined antidazzle and dazzle states is the dazzle state.

3. The liquid crystal antidazzle mirror according to claim 1, wherein said preselected one of the predetermined antidazzle and dazzle states is the antidazzle state.

4. The liquid crystal antidazzle mirror according to claim 1, wherein said key position detecting switch is associated integrally with the key cylinder.