WO2020031880A1 - Light source unit and lamp - Google Patents

Light source unit and lamp Download PDF

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Publication number
WO2020031880A1
WO2020031880A1 PCT/JP2019/030431 JP2019030431W WO2020031880A1 WO 2020031880 A1 WO2020031880 A1 WO 2020031880A1 JP 2019030431 W JP2019030431 W JP 2019030431W WO 2020031880 A1 WO2020031880 A1 WO 2020031880A1
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WO
WIPO (PCT)
Prior art keywords
light
light sources
arrangement base
light source
arrangement
Prior art date
Application number
PCT/JP2019/030431
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French (fr)
Japanese (ja)
Inventor
快之 中西
Original Assignee
株式会社小糸製作所
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Application filed by 株式会社小糸製作所 filed Critical 株式会社小糸製作所
Priority to JP2020535724A priority Critical patent/JPWO2020031880A1/en
Publication of WO2020031880A1 publication Critical patent/WO2020031880A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/143—Light emitting diodes [LED] the main emission direction of the LED being parallel to the optical axis of the illuminating device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
    • F21S41/148—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device the main emission direction of the LED being perpendicular to the optical axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/151—Light emitting diodes [LED] arranged in one or more lines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F21S41/255—Lenses with a front view of circular or truncated circular outline
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/65—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources
    • F21S41/657—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by moving light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/65—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources
    • F21S41/663—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by switching light sources

Definitions

  • the present invention relates to a technical field of a light source unit in which a plurality of light sources are arranged on a rotatable arrangement base and a lamp including the same.
  • Some lamps such as vehicle lamps, include a light source unit arranged on a base located at a central portion of a fan and configured to rotate together with the fan (for example, see Patent Document 1). .
  • the light source is turned on when the fan rotates, and a predetermined light distribution pattern is formed by light emitted from the light source. At this time, heat generated due to the lighting of the light source is released through the base functioning as a heat sink to perform cooling, and the light source is also cooled by airflow generated by rotation of the fan.
  • the light irradiation mode be diversified even in a lamp in which the light source is rotated together with the base.
  • a light source unit includes an arrangement base rotatable around a predetermined rotation axis as a fulcrum, and a plurality of light sources arranged on the arrangement base, wherein the plurality of light sources are arranged around the arrangement base.
  • the plurality of light sources can be individually turned on / off.
  • the lighting is performed when the plurality of light sources are moved to predetermined positions by rotation of the arrangement base.
  • the light sources are cooled at positions other than the predetermined positions.
  • the plurality of light sources be positioned at equal intervals.
  • the plurality of light sources be arranged on an outer peripheral surface of the arrangement base.
  • a lamp according to the present invention includes an arrangement base rotatable around a predetermined rotation axis, a plurality of light sources arranged on the arrangement base, and a light controlling light emitted from the plurality of light sources.
  • a control member wherein the plurality of light sources are arranged at a distance from each other in a circumferential direction of the arrangement base, and the light sources can be individually turned on / off.
  • the light control member performs control so as to reduce the difference between the length of the inner arc and the length of the outer arc of the light distribution pattern.
  • each light source is controlled according to the position of each light source during rotation of the arrangement base. Can be switched between turning on and off, and diversification of light irradiation modes can be achieved.
  • FIG. 2 shows an embodiment of the light source unit and the lamp according to the present invention together with FIG. 2 to FIG. 8, and this figure is a sectional view of a vehicle lamp. It is a top view showing the state where the light source was arranged on the arrangement base. It is a top view showing the state where a plurality of light sources are located in the range which is turned on.
  • FIGS. 5 and 6 show an example of an irradiation state in which light-on / off control is performed on a light source within a lightable range
  • FIG. 5 is a side view showing an example of a lamp unit. It is a front view showing the state where three light sources are located in the range where lighting is possible. It is a figure showing an example of a light distribution pattern.
  • FIG. 4 is a perspective view illustrating an example in which a light source is arranged on an outer peripheral surface.
  • FIG. 9 is a perspective view showing an example in which a light source is arranged on an outer peripheral surface of an arrangement base formed in a poly
  • the lamp of the present invention is applied to a vehicle headlamp.
  • the lamp of the present invention can be applied to various vehicle lamps other than the vehicle headlamp, and can be applied to various lamps such as lighting devices used for vehicles other than the vehicle.
  • the light source unit of the present invention can be applied to various light source units used in various lamps including a vehicle lamp.
  • the lighting fixtures 1 are respectively attached to the left and right ends of the front end of the vehicle body.
  • the lamp 1 includes a housing 2 having an opening at the front end and a cover 3 attached to the housing 2 with the opening of the housing 2 closed (see FIG. 1).
  • the housing 2 and the cover 3 constitute a lamp outer case 4.
  • the internal space of the lamp outer housing 4 is formed as an arrangement space 5.
  • the lamp unit 6 is arranged in the arrangement space 5.
  • the lamp unit 6 has a base holder 7, a projection lens 8, a reflector 9, a shade 10, and a light source unit 11.
  • the base holder 7 has a plate-like base portion 7a facing up and down, a front mounting portion 7b protruding upward from a front end portion of the base portion 7a, and a rear mounting portion 7c protruding upward from a rear end portion of the base portion 7a. And The base portion 7 a of the base holder 7 is attached to, for example, a lower surface portion of the housing 2.
  • the projection lens 8 is, for example, formed in a substantially hemispherical shape that is convex forward, and is attached to the front attachment portion 7 b of the base holder 7.
  • the projection lens 8 has a function of controlling the incident light into parallel light or condensed light.
  • the reflector 9 is mounted on the rear mounting portion 7c of the base holder 7.
  • the reflector 9 has an inner surface formed as a reflection surface 9a, and has a function of reflecting light toward the projection lens 8 on the reflection surface 9a.
  • the shade 10 is attached to the base 7a of the base holder 7.
  • the shade 10 has a function of blocking a part of the light generated in the arrangement space 5 to prevent the light from entering the projection lens 8, and is disposed at a position that covers a substantially front half of the light source unit 11 from above. .
  • the projection lens 8 has a function of controlling incident light into parallel light or light to be condensed
  • the reflector 9 has a function of reflecting light toward the projection lens 8
  • the shade 10 has The projection lens 8, the reflector 9, and the shade 10 function as a light control member for controlling light.
  • the light source unit 11 has a drive motor 12 functioning as a drive source, an arrangement base 13 rotated by the drive motor 12, and a plurality of light sources 14, 14,...
  • the drive motor 12 is attached to the base portion 7a of the base holder 7, and its axial direction is set in the vertical direction.
  • the arrangement base 13 is formed, for example, in a disk shape or a flat column shape, and has a central portion connected to the drive motor 12 in a state where the axial direction is up and down. Therefore, the arrangement base 13 is a rotation axis P whose center axis is a rotation fulcrum.
  • the upper surface of the arrangement base 13 is formed as a light source arrangement surface 13a.
  • the arrangement base 13 is rotated by the drive motor 12 about the rotation axis P as a fulcrum.
  • the arrangement base 13 is formed of, for example, a metal material having a high heat dissipation property, and functions as a heat sink in addition to the function as a rotating body.
  • the light sources 14, 14,... are arranged on the outer periphery of the light source arrangement surface 13a of the arrangement base 13 so as to be circumferentially separated from each other (see FIG. 2).
  • the light sources 14, 14,... are arranged on the light source arrangement surface 13a via a substrate (not shown), and are positioned, for example, at equal intervals. Since the light source arrangement surface 13a of the arrangement base 13 is formed in a planar shape, the arrangement of the light sources 14, 14, ... with respect to the arrangement base 13 can be easily performed.
  • the number of the light sources 14 arranged on the arrangement base 13 is arbitrary as long as it is plural, and the intervals may not be equal but may be irregular.
  • the light sources 14, 14,... Can be individually turned on and off. Therefore, the power supply state of each light source 14 is turned on and off by a control circuit (not shown).
  • a control circuit (not shown).
  • a contact portion (not shown) that is electrically connected is slidably positioned on the lower surface of the arrangement base 13. When the arrangement base 13 is rotated, the contact portion slides on the lower surface of the arrangement base 13 and the contact portion is connected to the terminal portion, so that the light source 14 corresponding to the connected terminal portion is energized and turned on.
  • the contact portion is separated from the terminal portion, the power supply to the light source 14, which has been turned on, is released, and the light source 14 is turned off.
  • the light sources 14, 14,... Can be individually turned on and off, and in the light source unit 11, the light sources 14, 14,.
  • the light sources 14, 14,... Are turned on, and the light sources 14, 14,.
  • Are turned on when the light sources 14, 14,... Are moved to the range A by the rotation of the arrangement base 13, and the light sources 14, 14,. Lighting is performed during the movement to A2.
  • the light sources 14, 14,... are turned on in the range A when the arrangement base 13 rotates, so that the light sources 14, 14 sequentially pass through the range A with the rotation of the arrangement base 13. ,... Are continuously lit, and it is recognized that the light source 14 existing in the range A is always lit.
  • the light emitted from the light source 14 is directed to the reflector 9, reflected by the reflection surface 9 a of the reflector 9 and is incident on the projection lens 8, the direction is controlled by the projection lens 8, transmitted through the cover 3, and emitted forward. You.
  • the size of the range A in the circumferential direction may be a size in which at least one of the light sources 14 is entirely located. It may be the size to be located (see FIG. 3).
  • the size of the range A in the circumferential direction can be set based on the number of rotations of the arrangement base 13 and the number of light sources 14, 14,. Desirably, it is more preferable to set in consideration of a cooling time required for the light source 14 to enhance the cooling performance, that is, a light-off time of the light source 14 for one rotation of the arrangement base 13.
  • the range A is a constant range in the circumferential direction
  • the light distribution pattern formed by the light emitted from the light sources 14, 14,... Is likely to be horizontally long, and in the lamp 1, for example, The light emitted from the light sources 14, 14, ... can easily form a high beam light distribution pattern.
  • the light distribution pattern formed by the light emitted from the light sources 14, 14,... Is not limited to the high beam light distribution pattern, and may be a low beam light distribution pattern. It may be a light distribution pattern of daytime illumination such as when used as a light source, or may be various light distribution patterns when used as a marker light.
  • the lighting is performed when the plurality of light sources 14, 14,... Are moved to a predetermined position (range A) by rotation of the arrangement base 13.
  • the plurality of light sources 14, 14, ... are turned off at positions other than the predetermined positions, so that the light sources 14, 14, ... are cooled at positions other than the predetermined positions, and the light sources 14, 14, ... .. A favorable driving state can be ensured.
  • the plurality of light sources 14, 14, since the plurality of light sources 14, 14,. It is possible to do. Therefore, it is possible to secure a high-luminance irradiation state using inexpensive light sources 14, 14,..., And to secure a high-luminance irradiation state without increasing the manufacturing cost of the lamp 1. Can be.
  • the turning-off time of the light sources 14, 14, can be maximized, and a stable driving state and a long life of the light sources 14, 14,... Can be achieved while ensuring high luminance.
  • An example of such an irradiation state is to detect a preceding vehicle, an oncoming vehicle, a pedestrian, etc., in combination with a sensor, and turn on and off the light so that these detected points are not partially irradiated with light. This is an example of controlling.
  • a lamp unit 6A having no reflector 9 is used (see FIG. 4).
  • the arrangement base 13 and the drive motor 12 are arranged in a state where the axial direction is set to the front-back direction, and the light emitted from the light sources 14, 14, ... is controlled by the projection lens 8 and directed forward. Irradiated.
  • the turning on / off control of this example can be performed by using the lamp unit 6 which reflects light by the reflector 9 and is controlled by the projection lens 8 and irradiated forward.
  • the light sources 14, 14,... Can be individually turned on and off, and the light sources 14, 14,. .. Can be turned on, and the light sources 14, 14,... Are turned off in other ranges (see FIG. 5).
  • the size of the range B in the circumferential direction is a size in which the plurality of light sources 14, for example, the entire three light sources 14, 14, 14 are located, and is a range from the start end B1 to the end B2.
  • the range B is, for example, 30 degrees, and the light distribution pattern formed by the light emitted from the light sources 14, 14, ... has a horizontally long shape and is emitted from the light sources 14, 14, ....
  • the light forms a high beam light distribution pattern.
  • the light distribution pattern illustrated in FIG. 6 is a light distribution pattern obtained by combining a light distribution pattern H of a high beam and a light distribution pattern L of a low beam in a state where the light is turned off in a range Bx.
  • the unlit part is the dark part C.
  • the dark portion C does not irradiate light to the occupant of the preceding vehicle, the occupant of the oncoming vehicle, the pedestrian, and the like, thereby preventing the generation of dazzling light for these occupants and pedestrians.
  • control circuit may turn off the light sources 14, 14,... In a plurality of ranges Bx corresponding to a plurality of detection points in the range B.
  • the light distribution pattern L of the low beam is formed by, for example, light emitted from another low beam lamp unit (not shown) arranged adjacent to the lamp unit 6A.
  • the light controlled by the projection lens 8 functioning as the light control member enables the formation of a horizontally long light distribution pattern. Therefore, by controlling the light to be turned off in a certain range in the rotation direction of the arrangement base 13, a part of the horizontally long light distribution pattern can be formed as the dark portion C, and light irradiation is partially performed in the irradiation range. It is possible to form a light irradiation state that is not affected.
  • the outer (upper) arc a and the inner (lower) arc b are formed into a gentle arc shape as the light distribution pattern H, and the length Pa of the arc a and the length Pb of the arc b are changed.
  • the projection lens 8 functioning as a light control member may be controlled so that the difference between the length Pa of the arc a and the length Pb of the arc b is reduced.
  • the light distribution pattern H is formed, for example, as a horizontally long rectangular or substantially rectangular light distribution pattern H ′ as shown in the upper right of FIG.
  • a light distribution pattern having an appropriate shape as a lamp can be formed.
  • the plurality of light sources 14, 14,... are arranged in the circumferential direction of the arrangement base 13, and the plurality of light sources 14, 14,. Lighting control can be individually performed.
  • the light sources 14, 14,... Arranged separately in the circumferential direction of the arrangement base 13 can be individually turned on and off, the light sources 14 can be controlled when the arrangement base 13 rotates. Can be switched on and off according to the positions of the light sources 14, 14,..., And the light irradiation mode can be diversified.
  • the light sources 14, 14,... are turned off so that the light-off time can be set as the cooling time, and the light sources 14, 14,. This makes it possible to improve the cooling performance and diversify the light irradiation mode.
  • the plurality of light sources 14, 14,... are positioned at equal intervals, so that the light-on / off control for the light sources 14, 14,. Regardless of the position, it is possible to take into account only the rotation speed of the arrangement base 13, and it is possible to facilitate and simplify the lighting control.
  • the surface of the arrangement base 13 that faces in the axial direction is formed as the light source arrangement surface 13a, but, for example, the outer peripheral surface of the arrangement base 13 is formed as the light source arrangement surface 13b, It is also possible to arrange the light sources 14, 14, ... in the circumferential direction apart from each other at 13b (see Fig. 7).
  • the light sources 14, 14,... are arranged on the outer peripheral surface of the arrangement base 13, the light sources 14, 14,.
  • the number of light sources 14, 14,... Arranged on the arrangement base 13 can be increased.
  • the arrangement base 13 in a polygonal shape and arrange the light sources 14, 14,... reference).
  • the arrangement base 13 By forming the arrangement base 13 in a polygonal shape in this manner, it is possible to arrange the light sources 14, 14,... On a plane, respectively, and the light sources 14, 14,. The arrangement can be performed easily.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Abstract

According to the present invention, diversification of light emission modes is achieved. The present invention comprises: an arrangement base (13) which can rotate about a rotation axis (P) as a fulcrum; and a plurality of light sources (14) arranged on the arrangement base, wherein the plurality of light sources are spaced apart from each other in the circumferential direction of the arrangement base, and lighting on/off control can be performed individually for the plurality of light sources. Accordingly, since the lighting on/off control can be performed individually for the plurality of light sources spaced apart from each other in the circumferential direction of the arrangement base, the lighting-on and the lighting-off of each light source can be switched according to the position of the light source when the arrangement base rotates, so that the diversification of light emission modes can be achieved.

Description

光源ユニット及び灯具Light source unit and lamp
　本発明は、回転可能な配置ベースに複数の光源が配置された光源ユニット及びこれを備えた灯具についての技術分野に関する。 The present invention relates to a technical field of a light source unit in which a plurality of light sources are arranged on a rotatable arrangement base and a lamp including the same.
　灯具、例えば、車輌用灯具には、光源がファンの中央部に位置された基台に配置され、ファンとともに回転される構成にされた光源ユニットを有するものがある（例えば、特許文献１参照）。 2. Description of the Related Art Some lamps, such as vehicle lamps, include a light source unit arranged on a base located at a central portion of a fan and configured to rotate together with the fan (for example, see Patent Document 1). .
　特許文献１に記載された車輌用灯具においては、ファンの回転時に光源が点灯され、光源から出射された光によって所定の配光パターンが形成される。このとき光源の点灯に伴って発生する熱がヒートシンクとして機能する基台を介して放出されて冷却が行われると共に光源がファンの回転によって生じる気流によっても冷却される。 In the vehicle lamp described in Patent Literature 1, the light source is turned on when the fan rotates, and a predetermined light distribution pattern is formed by light emitted from the light source. At this time, heat generated due to the lighting of the light source is released through the base functioning as a heat sink to perform cooling, and the light source is also cooled by airflow generated by rotation of the fan.
特開２０１８－６３８９１号公報JP 2018-63891 A
　ところで、近年、車輌用灯具を含む灯具においては、各種のタイプが開発され、光の照射態様も被視認性や意匠性の観点から多様化が進展している。例えば、車輌用灯具においては、センサーとの組み合わせにより、先行車や対向車や歩行者を検出し、これらの検出箇所に対しては部分的に光の照射が行われないように光の照射状態を制御することが可能なタイプも開発されている。 By the way, in recent years, various types of lamps including vehicle lamps have been developed, and light irradiation modes have been diversified from the viewpoint of visibility and design. For example, in a vehicle lamp, a preceding vehicle, an oncoming vehicle, and a pedestrian are detected by a combination with a sensor, and the light irradiation state is set so that the light is not partially irradiated to these detection points. A type capable of controlling the pressure has also been developed.
　従って、光源が基台とともに回転されるような灯具においても、光の照射態様の多様化が図られることが望ましい。 Therefore, it is desirable that the light irradiation mode be diversified even in a lamp in which the light source is rotated together with the base.
　そこで、本発明光源ユニット及び灯具は、上記した問題点を克服し、光の照射態様の多様化を図ることを目的とする。 Therefore, it is an object of the present invention to overcome the above-mentioned problems and to diversify light irradiation modes.
　第１に、本発明に係る光源ユニットは、所定の回転軸を支点として回転可能な配置ベースと、前記配置ベースに配置された複数の光源とを備え、前記複数の光源が前記配置ベースの周方向に離隔して配置され、前記複数の光源に対して個別に点消灯制御が可能にされたものである。 First, a light source unit according to the present invention includes an arrangement base rotatable around a predetermined rotation axis as a fulcrum, and a plurality of light sources arranged on the arrangement base, wherein the plurality of light sources are arranged around the arrangement base. The plurality of light sources can be individually turned on / off.
　これにより、配置ベースの周方向に離隔して配置された複数の光源に対して個別に点消灯制御が可能にされる。 This makes it possible to individually control the turning on and off of a plurality of light sources arranged in the circumferential direction of the arrangement base.
　第２に、上記した本発明に係る光源ユニットにおいては、前記配置ベースの回転により前記複数の光源が所定の位置に移動されたときに点灯が行われることが望ましい。 Second, in the light source unit according to the present invention described above, it is preferable that the lighting is performed when the plurality of light sources are moved to predetermined positions by rotation of the arrangement base.
　これにより、所定の位置以外の位置において複数の光源が消灯されるため、所定の位置以外の位置では光源が冷却される。 (4) Since the plurality of light sources are turned off at positions other than the predetermined positions, the light sources are cooled at positions other than the predetermined positions.
　第３に、上記した本発明に係る光源ユニットにおいては、前記複数の光源が等間隔に位置されることが望ましい。 Third, in the above-described light source unit according to the present invention, it is desirable that the plurality of light sources be positioned at equal intervals.
　これにより、複数の光源に対する点消灯制御を各光源の配置ベースに対する配置位置に拘わらず配置ベースの回転速度のみを考慮して行うことが可能になる。 This makes it possible to control the turning on / off of a plurality of light sources by considering only the rotation speed of the arrangement base regardless of the arrangement position of each light source with respect to the arrangement base.
　第４に、上記した本発明に係る光源ユニットにおいては、前記複数の光源が前記配置ベースの外周面に配置されることが望ましい。 Fourth, in the above-described light source unit according to the present invention, it is preferable that the plurality of light sources be arranged on an outer peripheral surface of the arrangement base.
　これにより、光源が点灯する範囲を小さくしても光源ユニットから出射される光の単位時間あたりの量を低下しないようにすることが可能になる。 (4) This makes it possible to prevent the amount of light emitted from the light source unit per unit time from decreasing even if the range in which the light source is turned on is reduced.
　第５に、本発明に係る灯具は、所定の回転軸を支点として回転可能な配置ベースと、前記配置ベースに配置された複数の光源と、前記複数の光源から出射された光を制御する光制御部材とを備え、前記複数の光源が前記配置ベースの周方向に離隔して配置され、前記複数の光源に対して個別に点消灯制御が可能にされたものである。 Fifth, a lamp according to the present invention includes an arrangement base rotatable around a predetermined rotation axis, a plurality of light sources arranged on the arrangement base, and a light controlling light emitted from the plurality of light sources. A control member, wherein the plurality of light sources are arranged at a distance from each other in a circumferential direction of the arrangement base, and the light sources can be individually turned on / off.
　これにより、光源ユニットにおいて、配置ベースの周方向に離隔して配置された複数の光源に対して個別に点消灯制御が可能にされる。 (4) With this, in the light source unit, it is possible to individually control the turning on and off of the plurality of light sources arranged in the circumferential direction of the arrangement base.
　第６に、上記した本発明に係る光源ユニットにおいては、前記光制御部材は配光パターンの形状の内側の弧の長さと外側の弧の長さの差を小さくするように制御することが望ましい。 Sixth, in the above-described light source unit according to the present invention, it is preferable that the light control member performs control so as to reduce the difference between the length of the inner arc and the length of the outer arc of the light distribution pattern. .
　これにより、配光パターンの形状を横長の矩形状又は略矩形状の配光パターンとして形成し易くなる。 This makes it easy to form the light distribution pattern as a horizontally long rectangular or substantially rectangular light distribution pattern.
　本発明によれば、配置ベースの周方向に離隔して配置された複数の光源に対して個別に点消灯制御が可能にされるため、配置ベースの回転時に各光源の位置に応じて各光源の点灯と消灯の切替を行うことが可能になり、光の照射態様の多様化を図ることができる。 According to the present invention, since it is possible to individually control the turning on and off of a plurality of light sources arranged in the circumferential direction of the arrangement base, each light source is controlled according to the position of each light source during rotation of the arrangement base. Can be switched between turning on and off, and diversification of light irradiation modes can be achieved.
図２乃至図８と共に本発明光源ユニット及び灯具の実施の形態を示すものであり、本図は、車輌用灯具の断面図である。FIG. 2 shows an embodiment of the light source unit and the lamp according to the present invention together with FIG. 2 to FIG. 8, and this figure is a sectional view of a vehicle lamp. 配置ベースに光源が配置された状態を示す平面図である。It is a top view showing the state where the light source was arranged on the arrangement base. 点灯される範囲に複数の光源が位置されている状態を示す平面図である。It is a top view showing the state where a plurality of light sources are located in the range which is turned on. 図５及び図６と共に点灯可能な範囲の中で光源に対する点消灯制御が行われる照射状態の例を示すものであり、本図は、灯具ユニットの例を示す側面図である。FIGS. 5 and 6 show an example of an irradiation state in which light-on / off control is performed on a light source within a lightable range, and FIG. 5 is a side view showing an example of a lamp unit. 点灯可能な範囲に三つの光源が位置されている状態を示す正面図である。It is a front view showing the state where three light sources are located in the range where lighting is possible. 配光パターンの例を示す図である。It is a figure showing an example of a light distribution pattern. 外周面に光源が配置された例を示す斜視図である。FIG. 4 is a perspective view illustrating an example in which a light source is arranged on an outer peripheral surface. 多角形の形状に形成された配置ベースの外周面に光源が配置された例を示す斜視図である。FIG. 9 is a perspective view showing an example in which a light source is arranged on an outer peripheral surface of an arrangement base formed in a polygonal shape.
　以下に、本発明光源ユニット及び灯具を実施するための形態について添付図面を参照して説明する。以下に示した実施の形態は、本発明灯具を車輌用前照灯に適用したものである。尚、本発明灯具は車輌用前照灯以外の各種の車輌用灯具に適用することができる他、車両以外に用いられる照明装置等の各種の灯具に適用することができる。また、本発明光源ユニットは、車輌用灯具を含む各種の灯具において用いられる各種の光源ユニットに適用することができる。 Hereinafter, embodiments for implementing the light source unit and the lamp of the present invention will be described with reference to the accompanying drawings. In the embodiment described below, the lamp of the present invention is applied to a vehicle headlamp. The lamp of the present invention can be applied to various vehicle lamps other than the vehicle headlamp, and can be applied to various lamps such as lighting devices used for vehicles other than the vehicle. Further, the light source unit of the present invention can be applied to various light source units used in various lamps including a vehicle lamp.
　灯具１は、それぞれ車体の前端部における左右両端部に取り付けられて配置されている。 The lighting fixtures 1 are respectively attached to the left and right ends of the front end of the vehicle body.
　灯具１は、前端に開口を有するハウジング２とハウジング２の開口を閉塞した状態でハウジング２に取り付けられたカバー３とを備えている（図１参照）。ハウジング２とカバー３によって灯具外筐４が構成されている。灯具外筐４の内部空間は配置空間５として形成されている。 The lamp 1 includes a housing 2 having an opening at the front end and a cover 3 attached to the housing 2 with the opening of the housing 2 closed (see FIG. 1). The housing 2 and the cover 3 constitute a lamp outer case 4. The internal space of the lamp outer housing 4 is formed as an arrangement space 5.
　配置空間５には灯具ユニット６が配置されている。灯具ユニット６はベースホルダー７と投影レンズ８とリフレクター９とシェード１０と光源ユニット１１を有している。 灯 The lamp unit 6 is arranged in the arrangement space 5. The lamp unit 6 has a base holder 7, a projection lens 8, a reflector 9, a shade 10, and a light source unit 11.
　ベースホルダー７は上下方向を向く板状のベース部７ａとベース部７ａの前端部から上方に突出された前側取付部７ｂとベース部７ａの後端部から上方に突出された後側取付部７ｃとを有している。ベースホルダー７はベース部７ａが、例えば、ハウジング２の下面部に取り付けられている。 The base holder 7 has a plate-like base portion 7a facing up and down, a front mounting portion 7b protruding upward from a front end portion of the base portion 7a, and a rear mounting portion 7c protruding upward from a rear end portion of the base portion 7a. And The base portion 7 a of the base holder 7 is attached to, for example, a lower surface portion of the housing 2.
　投影レンズ８は、例えば、前方に凸の略半球状に形成され、ベースホルダー７の前側取付部７ｂに取り付けられている。投影レンズ８は入射された光を平行光又は集光する光に制御する機能を有している。 The projection lens 8 is, for example, formed in a substantially hemispherical shape that is convex forward, and is attached to the front attachment portion 7 b of the base holder 7. The projection lens 8 has a function of controlling the incident light into parallel light or condensed light.
　リフレクター９はベースホルダー７の後側取付部７ｃに取り付けられている。リフレクター９は内面が反射面９ａとして形成され、光を反射面９ａで投影レンズ８へ向けて反射する機能を有している。 The reflector 9 is mounted on the rear mounting portion 7c of the base holder 7. The reflector 9 has an inner surface formed as a reflection surface 9a, and has a function of reflecting light toward the projection lens 8 on the reflection surface 9a.
　シェード１０はベースホルダー７のベース部７ａに取り付けられている。シェード１０は配置空間５において発生する一部の光を遮蔽して投影レンズ８への入射を防止する等の機能を有し、光源ユニット１１の略前半部を上方から覆う位置に配置されている。 The shade 10 is attached to the base 7a of the base holder 7. The shade 10 has a function of blocking a part of the light generated in the arrangement space 5 to prevent the light from entering the projection lens 8, and is disposed at a position that covers a substantially front half of the light source unit 11 from above. .
　上記したように、投影レンズ８は入射された光を平行光又は集光する光に制御する機能を有し、リフレクター９は光を投影レンズ８へ向けて反射する機能を有し、シェード１０は一部の光を遮蔽する機能を有しており、これらの投影レンズ８とリフレクター９とシェード１０は光を制御する光制御部材として機能する。 As described above, the projection lens 8 has a function of controlling incident light into parallel light or light to be condensed, the reflector 9 has a function of reflecting light toward the projection lens 8, and the shade 10 has The projection lens 8, the reflector 9, and the shade 10 function as a light control member for controlling light.
　光源ユニット１１は駆動源として機能する駆動モーター１２と駆動モーター１２によって回転される配置ベース１３と配置ベース１３に配置された複数の光源１４、１４、・・・とを有している。 The light source unit 11 has a drive motor 12 functioning as a drive source, an arrangement base 13 rotated by the drive motor 12, and a plurality of light sources 14, 14,...
　駆動モーター１２はベースホルダー７のベース部７ａに取り付けられ、軸方向が上下方向にされている。 The drive motor 12 is attached to the base portion 7a of the base holder 7, and its axial direction is set in the vertical direction.
　配置ベース１３は、例えば、円板状又は扁平な円柱状に形成され、軸方向が上下方向にされた状態で中心部が駆動モーター１２に連結されている。従って、配置ベース１３は中心軸が回転支点となる回転軸Ｐとされている。配置ベース１３は上面が光源配置面１３ａとして形成されている。配置ベース１３は駆動モーター１２によって回転軸Ｐを支点として回転される。配置ベース１３は放熱性の高い、例えば、金属材料によって形成され、回転体としての機能の他にヒートシンクとしても機能する。 The arrangement base 13 is formed, for example, in a disk shape or a flat column shape, and has a central portion connected to the drive motor 12 in a state where the axial direction is up and down. Therefore, the arrangement base 13 is a rotation axis P whose center axis is a rotation fulcrum. The upper surface of the arrangement base 13 is formed as a light source arrangement surface 13a. The arrangement base 13 is rotated by the drive motor 12 about the rotation axis P as a fulcrum. The arrangement base 13 is formed of, for example, a metal material having a high heat dissipation property, and functions as a heat sink in addition to the function as a rotating body.
　光源１４、１４、・・・は配置ベース１３における光源配置面１３ａの外周部に周方向に離隔して配置されている（図２参照）。光源１４としては、例えば、発光ダイオード（ＬＥＤ）が用いられている。光源１４、１４、・・・は図示しない基板を介して光源配置面１３ａに配置され、例えば、等間隔の状態で位置されている。配置ベース１３の光源配置面１３ａは平面状に形成されているため、配置ベース１３に対する光源１４、１４、・・・の配置を容易に行うことができる。 The light sources 14, 14,... Are arranged on the outer periphery of the light source arrangement surface 13a of the arrangement base 13 so as to be circumferentially separated from each other (see FIG. 2). As the light source 14, for example, a light emitting diode (LED) is used. The light sources 14, 14,... Are arranged on the light source arrangement surface 13a via a substrate (not shown), and are positioned, for example, at equal intervals. Since the light source arrangement surface 13a of the arrangement base 13 is formed in a planar shape, the arrangement of the light sources 14, 14, ... with respect to the arrangement base 13 can be easily performed.
　尚、光源１４の配置ベース１３に対する配置数は複数であれば任意であり、また、間隔も等間隔ではなく不等の間隔にされていてもよい。 The number of the light sources 14 arranged on the arrangement base 13 is arbitrary as long as it is plural, and the intervals may not be equal but may be irregular.
　灯具１においては、光源１４、１４、・・・に対して個別に点消灯制御が可能にされている。従って、各光源１４に対しては図示しない制御回路によって通電状態のオンオフが行われる。具体的な構成としては、例えば、配置ベース１３の下面に光源１４、１４、・・・にそれぞれ電流を供給するための複数の図示しない端子部が周方向に離隔して形成され、制御回路に電気的に接続された図示しない接点部が配置ベース１３の下面に摺動可能な状態で位置されている。配置ベース１３が回転されたときに接点部が配置ベース１３の下面に摺動され接点部が端子部に接続されることにより接続された端子部に応じた光源１４に通電が行われて点灯され、接点部が端子部から離隔されることにより点灯が行われていた光源１４への通電が解除されて消灯される。 In the lamp 1, the light sources 14, 14,... Can be individually turned on and off. Therefore, the power supply state of each light source 14 is turned on and off by a control circuit (not shown). As a specific configuration, for example, a plurality of terminal portions (not shown) for supplying current to the light sources 14, 14,... A contact portion (not shown) that is electrically connected is slidably positioned on the lower surface of the arrangement base 13. When the arrangement base 13 is rotated, the contact portion slides on the lower surface of the arrangement base 13 and the contact portion is connected to the terminal portion, so that the light source 14 corresponding to the connected terminal portion is energized and turned on. When the contact portion is separated from the terminal portion, the power supply to the light source 14, which has been turned on, is released, and the light source 14 is turned off.
　上記のように灯具１においては、光源１４、１４、・・・に対して個別に点消灯制御が可能にされており、光源ユニット１１においては、配置ベース１３の周方向における一定の範囲Ａで光源１４、１４、・・・が点灯され、それ以外の範囲では光源１４、１４、・・・が消灯されるように構成されている。従って、配置ベース１３の回転により各光源１４、１４、・・・が範囲Ａに移動されたときに点灯が行われ、光源１４、１４、・・・が範囲Ａの始端Ａ１から範囲Ａの終端Ａ２まで移動される間で点灯が行われる。 As described above, in the lamp 1, the light sources 14, 14,... Can be individually turned on and off, and in the light source unit 11, the light sources 14, 14,. The light sources 14, 14,... Are turned on, and the light sources 14, 14,. Are turned on when the light sources 14, 14,... Are moved to the range A by the rotation of the arrangement base 13, and the light sources 14, 14,. Lighting is performed during the movement to A2.
　このように灯具１においては、配置ベース１３の回転時に範囲Ａにおいて光源１４、１４、・・・の点灯が行われるため、配置ベース１３の回転に伴って範囲Ａを順次通過する光源１４、１４、・・・が連続的に点灯され、恰も範囲Ａに存在する光源１４が常時点灯しているような状態に認識される。 As described above, in the lamp 1, the light sources 14, 14,... Are turned on in the range A when the arrangement base 13 rotates, so that the light sources 14, 14 sequentially pass through the range A with the rotation of the arrangement base 13. ,... Are continuously lit, and it is recognized that the light source 14 existing in the range A is always lit.
　光源１４から出射された光はリフレクター９へ向かい、リフレクター９の反射面９ａで反射されて投影レンズ８に入射され、投影レンズ８によって方向が制御されカバー３を透過されて前方へ向けて照射される。 The light emitted from the light source 14 is directed to the reflector 9, reflected by the reflection surface 9 a of the reflector 9 and is incident on the projection lens 8, the direction is controlled by the projection lens 8, transmitted through the cover 3, and emitted forward. You.
　光源１４の点灯時には光源１４及び基板から発生する熱がヒートシンクとしても機能する配置ベース１３に伝達され、配置ベース１３を介して放出されて冷却が行われる。また、同時に、配置ベース１３の回転によって気流が生じるため、この気流によっても冷却が行われる。さらに、配置ベース１３の回転時には光源１４が範囲Ａに移動されたときのみ点灯が行われ、範囲Ａに存在していないときには光源１４が消灯されており、範囲Ａに光源１４が存在していない時間は光源１４の冷却時間とされる。 (4) When the light source 14 is turned on, heat generated from the light source 14 and the substrate is transmitted to the arrangement base 13 which also functions as a heat sink, and is discharged through the arrangement base 13 to perform cooling. At the same time, since the airflow is generated by the rotation of the arrangement base 13, the cooling is also performed by the airflow. Further, when the arrangement base 13 is rotated, the light is turned on only when the light source 14 is moved to the range A. When the light source 14 is not present in the range A, the light source 14 is turned off, and the light source 14 is not present in the range A. The time is the cooling time of the light source 14.
　尚、範囲Ａの周方向における大きさは、少なくとも一つの光源１４の全体が位置される大きさであればよく、例えば、配置ベース１３の回転時に瞬間的に二つ以上の光源１４の全体が位置される大きさであってもよい（図３参照）。但し、範囲Ａの周方向における大きさは配置ベース１３の回転数と光源１４、１４、・・・の配置ベース１３に対する配置数等に基づいて必要な点灯時間を確保する観点において設定することが望ましく、また、冷却性能を高めるために光源１４に必要な冷却時間、即ち、配置ベース１３の１回転に対する光源１４の消灯時間をも考慮して設定することがより望ましい。 The size of the range A in the circumferential direction may be a size in which at least one of the light sources 14 is entirely located. It may be the size to be located (see FIG. 3). However, the size of the range A in the circumferential direction can be set based on the number of rotations of the arrangement base 13 and the number of light sources 14, 14,. Desirably, it is more preferable to set in consideration of a cooling time required for the light source 14 to enhance the cooling performance, that is, a light-off time of the light source 14 for one rotation of the arrangement base 13.
　また、範囲Ａが周方向における一定の範囲であるため、光源１４、１４、・・・から出射された光によって形成される配光パターンは横長の形状になり易く、灯具１においては、例えば、光源１４、１４、・・・から出射される光によってハイビームの配光パターンの形成を行い易い。但し、光源１４、１４、・・・から出射される光によって形成される配光パターンはハイビームの配光パターンに限られることはなく、ロービームの配光パターンであってもよく、デイタイムランニングランプとして用いられる場合のような昼間照明の配光パターンでもよく、標識灯として使用される場合の各種の配光パターンであってもよい。 Further, since the range A is a constant range in the circumferential direction, the light distribution pattern formed by the light emitted from the light sources 14, 14,... Is likely to be horizontally long, and in the lamp 1, for example, The light emitted from the light sources 14, 14, ... can easily form a high beam light distribution pattern. However, the light distribution pattern formed by the light emitted from the light sources 14, 14,... Is not limited to the high beam light distribution pattern, and may be a low beam light distribution pattern. It may be a light distribution pattern of daytime illumination such as when used as a light source, or may be various light distribution patterns when used as a marker light.
　上記したように、灯具１にあっては、配置ベース１３の回転により複数の光源１４、１４、・・・が所定の位置（範囲Ａ）に移動されたときに点灯が行われる。 As described above, in the lamp 1, the lighting is performed when the plurality of light sources 14, 14,... Are moved to a predetermined position (range A) by rotation of the arrangement base 13.
　従って、所定の位置以外の位置において複数の光源１４、１４、・・・が消灯されるため、所定の位置以外の位置では光源１４、１４、・・・が冷却され、光源１４、１４、・・・の良好な駆動状態を確保することができる。 Therefore, the plurality of light sources 14, 14, ... are turned off at positions other than the predetermined positions, so that the light sources 14, 14, ... are cooled at positions other than the predetermined positions, and the light sources 14, 14, ... .. A favorable driving state can be ensured.
　特に、複数の光源１４、１４、・・・が順次範囲Ａにおいて点灯され範囲Ａ以外において消灯されるため、範囲Ａにおいてのみ大きな電流量を光源１４に供給しても消灯時間により十分な冷却を行うことが可能になる。従って、安価な光源１４、１４、・・・を用いて高輝度の照射状態を確保することが可能になり、灯具１の製造コストの高騰を来すことなく高輝度の照射状態を確保することができる。 In particular, since the plurality of light sources 14, 14,. It is possible to do. Therefore, it is possible to secure a high-luminance irradiation state using inexpensive light sources 14, 14,..., And to secure a high-luminance irradiation state without increasing the manufacturing cost of the lamp 1. Can be.
　また、範囲Ａの周方向における大きさを一つの光源１４の全体が位置される大きさにすることにより、配置ベース１３の一周の回転時間に対して光源１４、１４、・・・の消灯時間を最大にすることができ、高輝度化を確保した上で光源１４、１４、・・・の安定した駆動状態及び長寿命化を図ることができる。 Also, by setting the size of the range A in the circumferential direction to a size in which the entirety of one light source 14 is positioned, the turning-off time of the light sources 14, 14,. Can be maximized, and a stable driving state and a long life of the light sources 14, 14,... Can be achieved while ensuring high luminance.
　次に、一定の点灯可能な範囲の中で光源１４、１４、・・・に対する点消灯制御が行われる照射状態の例について説明する（図４乃至図６参照）。 Next, a description will be given of an example of an irradiation state in which light-on / off control is performed on the light sources 14, 14,.
　このような照射状態の例は、センサーとの組み合わせにより、先行車や対向車や歩行者等を検出し、これらの検出箇所に対しては部分的に光の照射が行われないように点消灯制御する例である。 An example of such an irradiation state is to detect a preceding vehicle, an oncoming vehicle, a pedestrian, etc., in combination with a sensor, and turn on and off the light so that these detected points are not partially irradiated with light. This is an example of controlling.
　本例においては、例えば、リフレクター９を有さない灯具ユニット６Ａが用いられる（図４参照）。灯具ユニット６Ａにおいて、配置ベース１３と駆動モーター１２は軸方向が前後方向にされた状態で配置され、光源１４、１４、・・・から出射された光が投影レンズ８によって制御されて前方へ向けて照射される。 In this example, for example, a lamp unit 6A having no reflector 9 is used (see FIG. 4). In the lamp unit 6A, the arrangement base 13 and the drive motor 12 are arranged in a state where the axial direction is set to the front-back direction, and the light emitted from the light sources 14, 14, ... is controlled by the projection lens 8 and directed forward. Irradiated.
　尚、本例の点消灯制御は、リフレクター９によって光が反射され投影レンズ８によって制御されて前方へ向けて照射される灯具ユニット６を用いて行うことも可能である。 Note that the turning on / off control of this example can be performed by using the lamp unit 6 which reflects light by the reflector 9 and is controlled by the projection lens 8 and irradiated forward.
　上記のように灯具１においては、光源１４、１４、・・・に対して個別に点消灯制御が可能にされており、配置ベース１３の周方向における一定の範囲Ｂで光源１４、１４、・・・が点灯可能とされ、それ以外の範囲では光源１４、１４、・・・が消灯されるように構成されている（図５参照）。 As described above, in the lamp 1, the light sources 14, 14,... Can be individually turned on and off, and the light sources 14, 14,. .. Can be turned on, and the light sources 14, 14,... Are turned off in other ranges (see FIG. 5).
　範囲Ｂの周方向における大きさは複数の光源１４、例えば、三つの光源１４、１４、１４の全体が位置される大きさであり、始端Ｂ１から終端Ｂ２までの範囲である。範囲Ｂは、例えば、３０度であり、光源１４、１４、・・・から出射される光によって形成される配光パターンは横長の形状になり、光源１４、１４、・・・から出射される光によってハイビームの配光パターンが形成される。 The size of the range B in the circumferential direction is a size in which the plurality of light sources 14, for example, the entire three light sources 14, 14, 14 are located, and is a range from the start end B1 to the end B2. The range B is, for example, 30 degrees, and the light distribution pattern formed by the light emitted from the light sources 14, 14, ... has a horizontally long shape and is emitted from the light sources 14, 14, .... The light forms a high beam light distribution pattern.
　このときセンサーによって先行車や対向車や歩行者等が検出されると、検出結果が制御回路に送信され、範囲Ｂにおいても、これらの検出箇所に応じた範囲Ｂｘで制御回路によって光源１４、１４、・・・の消灯が行われ、範囲Ｂｘで消灯が行われた状態の配光パターンＨが形成される（図６参照）。図６に示す配光パターンは、範囲Ｂｘで消灯が行われた状態のハイビームの配光パターンＨとロービームの配光パターンＬとを合わせた配光パターンであり、配光パターンＨは範囲Ｂｘにおいて消灯された部分が暗部Ｃとされている。暗部Ｃにより先行車の搭乗者や対向車の搭乗者や歩行者等には光が照射されず、これらの搭乗者や歩行者に対する幻惑光の発生が防止される。 At this time, when a preceding vehicle, an oncoming vehicle, a pedestrian, and the like are detected by the sensor, the detection result is transmitted to the control circuit. ,... Are performed, and the light distribution pattern H in a state where the light is turned off in the range Bx is formed (see FIG. 6). The light distribution pattern illustrated in FIG. 6 is a light distribution pattern obtained by combining a light distribution pattern H of a high beam and a light distribution pattern L of a low beam in a state where the light is turned off in a range Bx. The unlit part is the dark part C. The dark portion C does not irradiate light to the occupant of the preceding vehicle, the occupant of the oncoming vehicle, the pedestrian, and the like, thereby preventing the generation of dazzling light for these occupants and pedestrians.
　尚、検出結果によっては、範囲Ｂにおいて複数の検出箇所に応じた複数の範囲Ｂｘで制御回路によって光源１４、１４、・・・の消灯が行われる場合もある。 Depending on the detection result, the control circuit may turn off the light sources 14, 14,... In a plurality of ranges Bx corresponding to a plurality of detection points in the range B.
　ロービームの配光パターンＬは、例えば、灯具ユニット６Ａに隣接して配置された図示しないロービーム用の他の灯具ユニットから出射される光によって形成される。 The light distribution pattern L of the low beam is formed by, for example, light emitted from another low beam lamp unit (not shown) arranged adjacent to the lamp unit 6A.
　上記したように、光制御部材として機能する投影レンズ８によって制御された光により横長の形状の配光パターンの形成が可能とされる。従って、配置ベース１３の回転方向における一定範囲において消灯制御することにより横長の形状の配光パターンの一部を暗部Ｃとして形成することが可能になり、照射範囲において部分的に光の照射が行われないような光の照射状態を形成することができる。 As described above, the light controlled by the projection lens 8 functioning as the light control member enables the formation of a horizontally long light distribution pattern. Therefore, by controlling the light to be turned off in a certain range in the rotation direction of the arrangement base 13, a part of the horizontally long light distribution pattern can be formed as the dark portion C, and light irradiation is partially performed in the irradiation range. It is possible to form a light irradiation state that is not affected.
　また、図６には、配光パターンＨとして外側（上側）の弧ａと内側（下側）の弧ｂが緩やかな円弧状にされ弧ａの長さＰａと弧ｂの長さＰｂとが異なる例を示したが、光制御部材として機能する投影レンズ８によって弧ａの長さＰａと弧ｂの長さＰｂとの差が小さくなるように制御されてもよい。 In FIG. 6, the outer (upper) arc a and the inner (lower) arc b are formed into a gentle arc shape as the light distribution pattern H, and the length Pa of the arc a and the length Pb of the arc b are changed. Although a different example has been described, the projection lens 8 functioning as a light control member may be controlled so that the difference between the length Pa of the arc a and the length Pb of the arc b is reduced.
　このように制御されることにより配光パターンＨは、図６の右上に示すように、例えば、横長の矩形状又は略矩形状の配光パターンＨ′として形成され、灯具１、特に、車輌用灯具として適正な形状の配光パターンを形成することができる。 As a result, the light distribution pattern H is formed, for example, as a horizontally long rectangular or substantially rectangular light distribution pattern H ′ as shown in the upper right of FIG. A light distribution pattern having an appropriate shape as a lamp can be formed.
　尚、上記には、光源１４、１４、・・・が点灯される範囲Ａ、Ｂがそれぞれ一つのみ設定された例を示したが、光源１４、１４、・・・が点灯される範囲は周方向において異なる位置で二つ以上が設定されていてもよく、この場合には、例えば、光の照射方向や輝度や照射範囲等が点灯される各範囲毎に異なるようにすることも可能である。 In the above description, an example in which only one range A, B in which the light sources 14, 14,... Are turned on is set, but the range in which the light sources 14, 14,. Two or more may be set at different positions in the circumferential direction. In this case, for example, it is also possible to make the irradiation direction, the luminance, the irradiation range, and the like of the light different for each range to be turned on. is there.
　以上に記載した通り、灯具１にあっては、複数の光源１４、１４、・・・が配置ベース１３の周方向に離隔して配置され、複数の光源１４、１４、・・・に対して個別に点消灯制御が可能にされている。 As described above, in the lamp 1, the plurality of light sources 14, 14,... Are arranged in the circumferential direction of the arrangement base 13, and the plurality of light sources 14, 14,. Lighting control can be individually performed.
　従って、配置ベース１３の周方向に離隔して配置された複数の光源１４、１４、・・・に対して個別に点消灯制御が可能にされるため、配置ベース１３の回転時に各光源１４、１４、・・・の位置に応じて各光源１４、１４、・・・の点灯と消灯の切替を行うことが可能になり、光の照射態様の多様化を図ることができる。 Therefore, since the light sources 14, 14,... Arranged separately in the circumferential direction of the arrangement base 13 can be individually turned on and off, the light sources 14 can be controlled when the arrangement base 13 rotates. Can be switched on and off according to the positions of the light sources 14, 14,..., And the light irradiation mode can be diversified.
　また、配置ベース１３の回転時に光源１４、１４、・・・が消灯されることにより消灯時間を冷却時間とすることができ、消灯時間により光源１４、１４、・・・の十分な冷却を行うことが可能になり、冷却性能を高めた上で光の照射態様の多様化を図ることができる。 When the arrangement base 13 is rotated, the light sources 14, 14,... Are turned off so that the light-off time can be set as the cooling time, and the light sources 14, 14,. This makes it possible to improve the cooling performance and diversify the light irradiation mode.
　また、複数の光源１４、１４、・・・が等間隔に位置されることにより、光源１４、１４、・・・に対する点消灯制御を各光源１４、１４、・・・の配置ベース１３に対する配置位置に拘わらず配置ベース１３の回転速度のみを考慮して行うことが可能になり、点消灯制御の容易化及び単純化を図ることができる。 Also, the plurality of light sources 14, 14,... Are positioned at equal intervals, so that the light-on / off control for the light sources 14, 14,. Regardless of the position, it is possible to take into account only the rotation speed of the arrangement base 13, and it is possible to facilitate and simplify the lighting control.
　尚、上記には、配置ベース１３における軸方向を向く面が光源配置面１３ａとして形成された例を示したが、例えば、配置ベース１３の外周面を光源配置面１３ｂとして形成し、光源配置面１３ｂに光源１４、１４、・・・を周方向に離隔して配置することも可能である（図７参照）。 In the above description, an example in which the surface of the arrangement base 13 that faces in the axial direction is formed as the light source arrangement surface 13a, but, for example, the outer peripheral surface of the arrangement base 13 is formed as the light source arrangement surface 13b, It is also possible to arrange the light sources 14, 14, ... in the circumferential direction apart from each other at 13b (see Fig. 7).
　このように光源１４、１４、・・・が配置ベース１３の外周面に配置されることにより、光源１４、１４、・・・が配置ベース１３の最も外側に位置する面に配置されるため、光源１４、１４、・・・の配置ベース１３に対する配置数を増やすことが可能になる。 Since the light sources 14, 14,... Are arranged on the outer peripheral surface of the arrangement base 13, the light sources 14, 14,. The number of light sources 14, 14,... Arranged on the arrangement base 13 can be increased.
　従って、光源１４、１４、・・・が点灯する範囲Ａ、Ｂを小さくしても光源ユニット１１から出射される光の単位時間あたりの量を低下しないようにすることが可能になり、範囲Ａ、Ｂを小さくして光源１４、１４、・・・の冷却時間を増やすことにより、照射態様の多様化や高輝度化を確保した上で光源１４、１４、・・・の一層安定した駆動状態及び一層の長寿命化を図ることができる。 Therefore, even if the ranges A and B in which the light sources 14, 14,... Are turned on are reduced, the amount of light emitted from the light source unit 11 per unit time can be prevented from being reduced. , B are reduced to increase the cooling time of the light sources 14, 14,..., Thereby ensuring a more stable driving state of the light sources 14, 14,. In addition, the service life can be further extended.
　また、例えば、配置ベース１３を多角形の形状に形成し、外周面である光源配置面１３ｂに光源１４、１４、・・・を周方向に離隔して配置することも可能である（図８参照）。 Further, for example, it is also possible to form the arrangement base 13 in a polygonal shape and arrange the light sources 14, 14,... reference).
　このように配置ベース１３を多角形の形状に形成することにより、光源１４、１４、・・・をそれぞれ平面に配置することが可能になり、配置ベース１３に対する光源１４、１４、・・・の配置を容易に行うことができる。 By forming the arrangement base 13 in a polygonal shape in this manner, it is possible to arrange the light sources 14, 14,... On a plane, respectively, and the light sources 14, 14,. The arrangement can be performed easily.
　１…灯具、８…投影レンズ（光制御部材）、９…リフレクター（光制御部材）、１０…シェード（光制御部材）、１１…光源ユニット、１３…配置ベース 1: lamp, 8: projection lens (light control member), 9: reflector (light control member), 10: shade (light control member), 11: light source unit, 13: arrangement base

Claims (6)

  1. 　所定の回転軸を支点として回転可能な配置ベースと、
    　前記配置ベースに配置された複数の光源とを備え、
    　前記複数の光源が前記配置ベースの周方向に離隔して配置され、
    　前記複数の光源に対して個別に点消灯制御が可能にされた
    　光源ユニット。     An arrangement base rotatable around a predetermined rotation axis,
    A plurality of light sources arranged on the arrangement base,
    The plurality of light sources are arranged spaced apart in a circumferential direction of the arrangement base,
    A light source unit capable of individually turning on and off the plurality of light sources.
  2. 　前記配置ベースの回転により前記複数の光源が所定の位置に移動されたときに点灯が行われる
    　請求項１に記載の光源ユニット。     The light source unit according to claim 1, wherein lighting is performed when the plurality of light sources are moved to predetermined positions by rotation of the arrangement base.
  3. 　前記複数の光源が等間隔に位置された
    　請求項１又は請求項２に記載の光源ユニット。     The light source unit according to claim 1, wherein the plurality of light sources are located at equal intervals.
  4. 　前記複数の光源が前記配置ベースの外周面に配置された
    　請求項１、請求項２又は請求項３に記載の光源ユニット。     The light source unit according to claim 1, wherein the plurality of light sources are arranged on an outer peripheral surface of the arrangement base.
  5. 　所定の回転軸を支点として回転可能な配置ベースと、
    　前記配置ベースに配置された複数の光源と、
    　前記複数の光源から出射された光を制御する光制御部材とを備え、
    　前記複数の光源が前記配置ベースの周方向に離隔して配置され、
    　前記複数の光源に対して個別に点消灯制御が可能にされた
    　灯具。     An arrangement base rotatable around a predetermined rotation axis,
    A plurality of light sources arranged on the arrangement base,
    A light control member for controlling light emitted from the plurality of light sources,
    The plurality of light sources are arranged apart from each other in a circumferential direction of the arrangement base,
    A lamp in which lighting control of the plurality of light sources can be individually performed.
  6. 　前記光制御部材は配光パターン形状の内側の弧の長さと外側の弧の長さの差を小さくするように制御する
    　請求項５に記載の灯具。     The lamp according to claim 5, wherein the light control member performs control so as to reduce a difference between a length of an inner arc and a length of an outer arc of the light distribution pattern shape.
PCT/JP2019/030431 2018-08-09 2019-08-02 Light source unit and lamp WO2020031880A1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040125601A1 (en) * 2002-01-23 2004-07-01 Coates Nicholas Richard Illumination apparatus
JP2015509653A (en) * 2012-03-08 2015-03-30 コーニンクレッカ フィリップス エヌ ヴェ Controllable high intensity illumination with movable light source
JP2018063891A (en) * 2016-10-13 2018-04-19 株式会社小糸製作所 Light source unit and lamp fitting

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040125601A1 (en) * 2002-01-23 2004-07-01 Coates Nicholas Richard Illumination apparatus
JP2015509653A (en) * 2012-03-08 2015-03-30 コーニンクレッカ フィリップス エヌ ヴェ Controllable high intensity illumination with movable light source
JP2018063891A (en) * 2016-10-13 2018-04-19 株式会社小糸製作所 Light source unit and lamp fitting

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