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51. 发明专利

JP2002358805A HEADLIGHT OF VEHICLE 失效
公开(公告)号：JP2002358805A
公开(公告)日：2002-12-13
申请号：JP2001162372
申请日：2001-05-30
申请人： KOITO MFG CO LTD
发明人： TAKADA KENICHI , UCHIDA NAOKI , ISHIDA HIROYUKI
IPC分类号： F21S8/12 , F21S8/10 , F21V5/00 , F21V7/00 , F21V11/16 , F21V13/00 , F21W101/10 , F21Y101/00
摘要： PROBLEM TO BE SOLVED: To provide a headlight of a vehicle with an improved long distance visibility of a left and right dispersion part without irradiating dazzling light to the driver of the vehicle on the opposite lane. SOLUTION: The headlight of a vehicle 7 comprises a light source 11, a reflector 8 irradiating the light of the light source, a cover lens covering the front side of the reflector and the light source. A light distribution pattern 1 at a long beam has a lateral cut line 2R at least at opposite lane side, and the headlight has a long distance visualizing part 3R ranging up to the upper part of the lateral cut line at the end part of the lateral cut line of the light distribution pattern.

52. 发明专利

JP2002184219A VEHICLE HEAD LIGHT 失效
公开(公告)号：JP2002184219A
公开(公告)日：2002-06-28
申请号：JP2000383533
申请日：2000-12-18
申请人： KOITO MFG CO LTD
发明人： UCHIDA NAOKI
IPC分类号： F21S8/12 , F21S8/10 , F21V11/00 , F21V11/16 , F21V13/00 , F21W101/10 , F21Y101/00
摘要： PROBLEM TO BE SOLVED: To reduce variation in brightness and darkness at the bright and darkboarder at a front end of a light distribution. SOLUTION: The vehicle head light 1 is provided with a reflector 2 having a reflection surface 2a having an approximately rotated ellipse shape; a light source 3 disposed at a first focus position F1 of the reflector; a projection lens 4 disposed at a front side of the light source and projecting the light of the light source reflected by the reflector to a front side; and a cut line forming shade 5 of which an upper edge 5a is disposed at a focus position f of the projection lens. A dimmer shade 6 of which a tip end 6a is positioned at a position closer to the reflection surface as compared with a second focus F2 of the reflector is disposed above an optical axis x-x of the reflector.

53. 发明专利

JP2001023419A HEADLIGHT FOR VEHICLE 失效
公开(公告)号：JP2001023419A
公开(公告)日：2001-01-26
申请号：JP19708699
申请日：1999-07-12
申请人： KOITO MFG CO LTD
发明人： UCHIDA NAOKI
IPC分类号： F21S8/12 , F21V5/00 , F21V11/16 , F21V13/00
摘要： PROBLEM TO BE SOLVED: To provide a projector headlight for a vehicle capable of mitigating the light-dark contrast at the boundary line of a light distribution pattern for passing beam and free of generation of a bad effect such as an irregular color, etc. SOLUTION: At the front surface 18a of a condenser lens 18 consists of a flat convex lens, an up-deflecting prism lens element 18s is formed extending in the horizontal direction along the intersection of the front surface 18a with a horizontal plane including the optical axis Ax of a lighting fixture. Thereby the light-dark contrast at the boundary line of a light distribution pattern for passing beam is mitigated by the up facing deflecting bundle of beams which passes the condenser lens 18 and is radiated forward from the lens element 18s. In the neighbouring region of the intersection L on the condenser lens front surface 18a, the reflected light from the reflection surface 14a of a reflector 14 is not incident to the peripheral edge of the condenser lens 18, so that there is no risk that an irregular color is generated in the light distribution pattern by the up facing deflecting bundle of beams radiated forward from the lens element 18s.

54. 发明专利

JPH1050105A HEAD LIGHT FOR VEHICLE 失效
公开(公告)号：JPH1050105A
公开(公告)日：1998-02-20
申请号：JP22048596
申请日：1996-08-02
申请人： KOITO MFG CO LTD
发明人： SERIZAWA HIROYUKI , UCHIDA NAOKI
IPC分类号： F21S8/10 , F21V7/00 , F21V7/09 , F21W101/10 , F21Y101/00 , F21M3/08
摘要： PROBLEM TO BE SOLVED: To constitute a head light for forming a light distribution pattern of an auxiliary light so as to control the light emitted from a discharge bulb by using a plurality of reflection surface elements constituting a reflector surface, and to obtain a required light distribution pattern of an auxiliary light even in a state after aiming adjustment of a reflector. SOLUTION: A group of reflecting surface elements 22As constitutes a horizontal cut line formation region 22A of a reflector surface 22. A horizontal section of a reflecting surface elements 22As1 positioned in an outermost part of the group of the reflecting surface elements 22As is formed in a concave shape. A light distribution pattern PA1 is formed so that light beams reflected from the reflecting surface elements 22As1 cross each other. This performs the left- side aiming adjustment of a reflector 16. When a light beam reflected from a left edge of the reflecting surface element 22As1 is blocked with an extension 28, an original light distribution pattern is changed into a light distribution pattern on which a portion on an oblique cut line side remains, and thereby a hot zone of a light distribution pattern of an auxiliary light is partly constituted.

55. 发明专利

JPH1031903A HEADLIGHT OF VEHICLE 失效
公开(公告)号：JPH1031903A
公开(公告)日：1998-02-03
申请号：JP20655096
申请日：1996-07-17
申请人： KOITO MFG CO LTD
发明人： SERIZAWA HIROYUKI , UCHIDA NAOKI
IPC分类号： F21S8/10 , F21V7/09 , F21W101/10 , F21Y101/00 , F21M3/08
摘要： PROBLEM TO BE SOLVED: To provide a headlight for vehicle equipped with a discharge bulb, with which glaring generated at formation of an aux. light distribution pattern can be reduced without causing obstruction for formation of a cut line. SOLUTION: On the reflection surface 22 of a reflector 16 four outside reflective face elements 22s1 in the oblique cut-line forming region 22A and three outside reflective face elements 22s2 in the horizontal cut-line forming region 22B are given a longitudinal section folded in an aside facing angle shape at the boundaries LA and LB so that the reflected light given from the upper regions 22s1a and 22s2a is set as facing down relatively. Thereby the light distribution pattern formed with the reflected light from the upper regions 22s1a and 22s2a and the stray light pattern formed supplementarily in the neiborhood of its over-part are displaced downward to bring about a reduction of the upward scattered light, and also a vivid cut line is formed with the reflected light given from the lower regions 22s1b and 22s2b.

56. 发明专利

JPH09129004A HEAD LAMP FOR VEHICLE 失效
公开(公告)号：JPH09129004A
公开(公告)日：1997-05-16
申请号：JP31002495
申请日：1995-11-02
申请人： KOITO MFG CO LTD
发明人： UCHIDA NAOKI
IPC分类号： F21S8/10 , F21V7/00 , F21V7/09 , F21W101/10 , F21Y101/00 , F21M3/08
摘要： PROBLEM TO BE SOLVED: To improve the appearance of a lighting fixture and simplify optical designing work in a head light for a vehicle which has a stepped reflecting mirror. SOLUTION: Light distributing steps 12aA, 12aB located at the right and left upper corners of the light axis Ax of a reflecting mirror 10 among a plural of light distributing steps 12a constituting a reflecting face 12 are formed to illuminate light flux reflected from upper areas A1, B1 downward of light flux reflected from lower areas A2, B2 with a broken line as a boundary. In this way, if parts of a lighting fixture are insufficient in precision, light flux reflected from the upper areas A1, B1 are prevented from being uncarelessly illuminated upward. The upper areas A1, B1 and the lower areas A2, B2 are formed by using longitudinal light distributing steps 12aA, 12aB so that the subsections of the reflecting face 12 are minimized, level differences between the upper areas A1, B1 and the lower areas A2, B2 are eliminated and no resulting upward scattering occurs.

57. 发明专利

JPH0922607A REFLECTOR OF VEHICULAR LAMP 失效
公开(公告)号：JPH0922607A
公开(公告)日：1997-01-21
申请号：JP19412995
申请日：1995-07-07
申请人： KOITO MFG CO LTD
发明人： UCHIDA NAOKI
IPC分类号： F21S8/10 , F21V7/00 , F21V7/09 , F21M3/08
摘要： PROBLEM TO BE SOLVED: To achieve both formation of sharp cutlines and diffusion of light in the horizontal direction, in the reflector of a vehicular lamp whose width is greater in the vertical direction than in the horizontal direction as seen from the front. SOLUTION: This reflector 1 has a front shape that is greater in width in the vertical direction than in the horizontal direction, and the area 4 of its reflecting surface 2 which is located above a horizontal plane containing the main optical axis of the reflector 1 is divided into two areas 5, 6 along the vertical direction. The first uppermost area 5 is such that a filament image projected thereby contributes to the formation of cutlines. The second area 6 located immediately below the area 5 is such that a filament image formed thereby contributes to the formation of a pattern of projection that is most diffused in the horizontal direction. The area 9 of the reflecting surface 2 which is below the horizontal plane containing the main optical axis of time reflector 1 is such that the enlargement in the horizontal direction of its pattern of projection is made smaller than that of the pattern of projection formed by the second area 6. A circular hole 3 for inserting an electric bulb is formed across the second area 6 and the area 9 therebelow so as not to affect the first area 5.

58. 发明专利

JPH06349301A REFLECTING MIRROR OF LIGHTING FIXTURE FOR VEHICLE 失效
公开(公告)号：JPH06349301A
公开(公告)日：1994-12-22
申请号：JP15636993
申请日：1993-06-03
申请人： KOITO MFG CO LTD
发明人： UCHIDA NAOKI
IPC分类号： F21S8/10 , F21V7/00 , F21V7/09 , F21V17/00 , G02B5/10 , F21M3/08 , F21M3/02
摘要： PURPOSE:To make the securing of the horizontal diffusion and the central light intensity in a light distribution pattern compatible. CONSTITUTION:While light converging areas 3a and 3a making a pair to the left side and the right side as to the main optical axis on a reflecting mirror 1 are provided, the area other than the light converging areas 3a and 3a is made as a light diffusing area 2. The reflected light by the light converging areas 3a and 3a contributes to form a light converging part in the light distribution pattern, while the reflected light by the light diffusing area 2 contributes to form a pattern diffused horizontally in the light distribution pattern. A curved surface design is made to make the horizontal diffusion angle the larger as the more closer to the periphery in the horizontal direction, and the surface form of the light converging areas is made in an elliptical paroboloid form or a rotary paraboloid form.

59. 发明专利

JP2006324077A HEADLIGHT FOR AUTOMOBILE 审中-公开
公开(公告)号：JP2006324077A
公开(公告)日：2006-11-30
申请号：JP2005144891
申请日：2005-05-18
申请人： KOITO MFG CO LTD
发明人： TSUDA TOSHIAKI , UCHIDA NAOKI , MICHIMAE YOICHIRO
IPC分类号： H01J61/33 , F21S8/10 , F21W101/10 , F21Y101/00 , H01J61/34
摘要： PROBLEM TO BE SOLVED: To provide a headlight capable of forming a light distribution superior in visibility of distant area and front area. SOLUTION: The headlight is provided with a discharge bulb V1 having a ceramic arc tube 11A as a light emitting part, in which electrodes 15, 15 are installed in opposition to each other, and a light emitting material or the like is filled, and a reflector 100 which reflection controls light emission of the arc tube 11A, and the cross-section of the arc tube 11A is made long sideways. The size of light source image a projected along the cut-off line CL against the maximum luminance portion a1 becomes slim (narrow in width) and the maximum luminance portion a can be designed to be light distributed so as to approach the cut-line, and a hot zone of light distribution comes closer to the cut-off line, thereby, visibility of distant area is improved. Since the light source image projected on the irradiation region below the cut-off line CL centered around the elbow portion becomes thick (wide in width), and the region in which adjoining light source images a, a are overlapped is increased, thereby, color unevenness and luminous intensity unevenness in light distribution are not conspicuous and visibility of front area is improved. COPYRIGHT: (C)2007,JPO&INPIT

60. 发明专利

JPH1040708A HEAD LAMP FOR VEHICLE 失效
公开(公告)号：JPH1040708A
公开(公告)日：1998-02-13
申请号：JP20796896
申请日：1996-07-18
申请人： KOITO MFG CO LTD
发明人： YAMAMURA SATOSHI , UCHIDA NAOKI
IPC分类号： F21S8/10 , F21V7/00 , F21V7/09 , F21V11/16 , F21W101/10 , F21Y101/00 , F21M3/08
摘要： PROBLEM TO BE SOLVED: To reduce glare due to upward scattering light from a boundary line portion between upper and lower parts on a reflector reflection face for auxiliary light distribution pattern forming which is so constituted as to control the light from a discharge bulb by plural reflection face elements constituting the reflector reflection face. SOLUTION: In a reflection face 22 of a reflector 16, if a boundary line between upper and lower parts is formed on a reflection face region on both left and right sides of a light beam axis Ax thereof, coat clod is formed on this boundary line, and upward scattering light from this coat clod is applied as a relatively bright light diagonally and upwardly of a horizontal cut line and causes glare generation. Reflection face elements 22As and 22Bs constituting reflection face regions 22A and 22B for cut line forming are extended and formed more upward than cross lines L1 and L2 between an elevation angle 15 deg. passing the light beam axis Ax and the reflection face 22 so that the boundary line is not formed in the reflection face region on both right and left sides of the light beam axis Ax.

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