| 摘要 |
<p>PURPOSE:To obtain a proper brightness with reduced electric consumption by constituting connecting lines between head lamps and a power supply in such a way that their connection can be switched between serial and parallel by operation of lighting on/off switches. CONSTITUTION:By contacting a movable contact 31 with a contact 33 to close a switch 71, a coil 35c is excited to close a normally opening contact 35s. Lamps 20R, 20L become serial at this time, achieving a proper brightness which is lower than that at the normal lighting but higher than that of a clearance lamp 10. Next, if a contact 34 is contacted in addition to the contact 33, a movable contact 55s of a relay 55 contacts a contact 55f to close a contact 46s of a relay 56. At this time, the lamps 20L, 20R become parallel to a power supply 70, achieving a lighting condition of a normal brightness. Thus, since lighting condition of lamps 20L, 20R is controlled by operation of switches 30, 40, useless electric consumption is prevented, achieving a brightness just as desired.</p> |
