Electric lamp and discharge devices: systems – Special application – Vehicle
Patent
1984-01-26
1986-01-14
Dixon, Harold
Electric lamp and discharge devices: systems
Special application
Vehicle
307 10LS, 307120, 307121, 315 82, 315DIG4, B60Q 126, B62D 4500
Patent
active
045647895
ABSTRACT:
A dimmer for use with a vehicle is provided. It has a vehicle speed detector circuit for detecting a state wherein the vehicle speed is within a predetermined range to generate a signal, an acceleration detector circuit for detecting a state wherein the acceleration of the vehicle is less than a predetermined value to generate a signal, switch means for controlling passage of a logical product which is obtained through a logic circuit alone or in combination with the respective signals from said vehicle speed detector circuit, said acceleration detector circuit and said switch circuit, and circuit means for controlling a light source in accordance with the output of said logic circuit. Therefore, the controlling the intensity of the light source to prevent light reflection on the window from the meters, indicators or the like, to eliminate dazzling a driver's eyes and to provide safety driving is carried out in consideration of the acceleration state in addition to the state of vehicle speed, and even in the mode of cruising travel, confirmation of the meters, indicators or the like can be made as necessary by operation of the switch. Thereby, dimming operation can be carried out safety.
REFERENCES:
patent: 2048715 (1936-07-01), Sorenson
patent: 3497708 (1970-02-01), Daugherty
patent: 3634792 (1972-01-01), Blomenkamp
patent: 3851208 (1974-11-01), Carmichael et al.
Dixon Harold
Kabushiki Kaisha Tokai Rika Denki Seisakusho
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