Vehicular headlamp
First Claim
1. A vehicular headlamp having a main lamp body, comprising:
- a basic lamp piece unit configured to irradiate light to form a light intensity distribution pattern for a low beam;
an additional lamp piece unit configured to irradiate light to form an additional light intensity distribution pattern by being lighted temporarily in the main lamp body,wherein a light source bulb is used as a light source of the basic lamp piece unit and a semiconductor light emitting element is used as a light source of the additional lamp piece unit;
and further comprising a controller which controls an amount of irradiating light of the additional lamp piece unit in accordance with a situation of running the vehicle; and
wherein the controller controls the additional lamp unit to irradiate light during only a portion of the time when the basic lamp piece unit irradiates light.
1 Assignment
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Accused Products
Abstract
Whereas a light source bulb is used as a light source of a basic lamp piece unit which needs a large amount of irradiating light, with regard to an additional lamp piece unit lighted on and off repeatedly in accordance with a situation of running a vehicle, a semiconductor light emitting element having a fast response speed in being lighted on and off and excellent in durability against repeatedly lighting on and off the semiconductor light emitting element 64 as a light source thereof. Thereby, light can be irradiated in correspondence with the situation of running the vehicle and life of the light source can sufficiently been ensured. Further, the additional lamp piece unit is made to be able to be compactly constituted to promote a degree of freedom of arranging the additional lamp piece unit.
48 Citations
14 Claims
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1. A vehicular headlamp having a main lamp body, comprising:
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a basic lamp piece unit configured to irradiate light to form a light intensity distribution pattern for a low beam; an additional lamp piece unit configured to irradiate light to form an additional light intensity distribution pattern by being lighted temporarily in the main lamp body, wherein a light source bulb is used as a light source of the basic lamp piece unit and a semiconductor light emitting element is used as a light source of the additional lamp piece unit; and further comprising a controller which controls an amount of irradiating light of the additional lamp piece unit in accordance with a situation of running the vehicle; and wherein the controller controls the additional lamp unit to irradiate light during only a portion of the time when the basic lamp piece unit irradiates light. - View Dependent Claims (2, 3, 4)
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5. A vehicular headlamp, comprising:
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a first lamp unit; and a second lamp unit, wherein said first lamp unit and said second lamp unit are formed inside a chamber having a cover configured to transmit light having a substantially similar color; wherein a semiconductor light emitting element is used as a light source for the second lamp unit; wherein a light source other than a semiconductor light emitting element is used for the first lamp unit; wherein the color of the light of the first lamp unit is substantially similar to an emission color of the light source of the second lamp unit; wherein said first lamp unit comprises an aiming mechanism that aims said first lamp unit at least one of up, down, left and right with respect to an optical axis; and wherein said first lamp unit is aimed about 0.5 to 0.6 degrees below said optical axis. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13)
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14. A vehicular headlamp, comprising:
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a first lamp unit; and a second lamp unit, wherein said first lamp unit and said second lamp unit are formed inside a chamber having a cover configured to transmit light having a substantially similar color; wherein a semiconductor light emitting element is used as a light source for the second lamp unit; wherein a light source other than a semiconductor light emitting element is used for the first lamp unit; wherein the color of the light of the first lamp unit is substantially similar to an emission color of the light source of the second lamp unit; wherein said second lamp unit has an optical axis that extends at an angle with respect to a rear to front direction of a vehicle of said vehicular headlamp, and includes a swiveling device that pivots said second lamp unit in a left-right direction with an angular range; and wherein said angle is about 30 degrees, and said angular range is about 20 degrees.
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Specification