JPS5744541A - Change-over device for automatically lighting head lamp of automobile - Google Patents

Change-over device for automatically lighting head lamp of automobile

Info

Publication number
JPS5744541A
JPS5744541A JP11848680A JP11848680A JPS5744541A JP S5744541 A JPS5744541 A JP S5744541A JP 11848680 A JP11848680 A JP 11848680A JP 11848680 A JP11848680 A JP 11848680A JP S5744541 A JPS5744541 A JP S5744541A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
lamps
brightness
comparators
outputs
output
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
JP11848680A
Inventor
Hiroshi Hara
Yoichi Ishiwatari
Mitsuo Miyaji
Original Assignee
Ichikoh Ind 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

Links

Abstract

PURPOSE: To eliminate troublesome operations for alternatively turning on and off head lamps when an automobile passes by another one and travels in the bright circumference by automatically making changeover between passing beam and running beam and turning on and off such lamps in response to the light beams of head lamps of opposed vehicle and to the brightness of outside circumference.
CONSTITUTION: When the outputs of a light sensor 1 for sensing the outside brightness and a light sensor 2 for sensing light beams of head 1 lamps of an opposed vehicle do not reach set values Va, Vb of comparators 3, 4 the output of EXOR (exclusive OR circuit) 5 is L and lamps 8 for the light beams from the opposed vehicle and lamps 9 for ones in travelling are both turned off. When the outside brightness or brightness caused by the lamps of opposed vehicle reaches points a-b, the outputs of the comparators 3, 4 are respectively H, L and EXOR5 generates H output to turn on the lamps 8 through a driver 6. Theh, when said brightness comes to the left side of point (b), the outputs of the comparators 3, 4 are both H and the output of EXOR5 is L so that beams 8, 9 are respectively turned off and on.
COPYRIGHT: (C)1982,JPO&Japio
JP11848680A 1980-08-29 1980-08-29 Change-over device for automatically lighting head lamp of automobile Pending JPS5744541A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11848680A JPS5744541A (en) 1980-08-29 1980-08-29 Change-over device for automatically lighting head lamp of automobile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11848680A JPS5744541A (en) 1980-08-29 1980-08-29 Change-over device for automatically lighting head lamp of automobile

Publications (1)

Publication Number Publication Date
JPS5744541A true true JPS5744541A (en) 1982-03-13

Family

ID=14737861

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11848680A Pending JPS5744541A (en) 1980-08-29 1980-08-29 Change-over device for automatically lighting head lamp of automobile

Country Status (1)

Country Link
JP (1) JPS5744541A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6389355U (en) * 1986-12-02 1988-06-10
JPH02127236A (en) * 1988-11-02 1990-05-15 Maruzen:Kk Tray for fermented and steamed food
US9619720B2 (en) 2013-08-19 2017-04-11 Gentex Corporation Vehicle imaging system and method for distinguishing between vehicle tail lights and flashing red stop lights

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6389355U (en) * 1986-12-02 1988-06-10
JPH02127236A (en) * 1988-11-02 1990-05-15 Maruzen:Kk Tray for fermented and steamed food
US9619720B2 (en) 2013-08-19 2017-04-11 Gentex Corporation Vehicle imaging system and method for distinguishing between vehicle tail lights and flashing red stop lights

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