WO2020066427A1 - Vehicle led bulb unit - Google Patents

Vehicle led bulb unit Download PDF

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Publication number
WO2020066427A1
WO2020066427A1 PCT/JP2019/033559 JP2019033559W WO2020066427A1 WO 2020066427 A1 WO2020066427 A1 WO 2020066427A1 JP 2019033559 W JP2019033559 W JP 2019033559W WO 2020066427 A1 WO2020066427 A1 WO 2020066427A1
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Prior art keywords
led
vehicle
led bulb
led chip
bulb
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PCT/JP2019/033559
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French (fr)
Japanese (ja)
Inventor
亮太 倉林
晋輔 井上
智文 本橋
忠博 久野
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株式会社カーメイト
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Publication of WO2020066427A1 publication Critical patent/WO2020066427A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
    • B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights

Definitions

  • the present invention relates to an LED bulb unit, and more particularly, to a unit that can adjust an irradiation range and can adjust the illuminance and the like of an LED bulb suitable for application to a headlight of a vehicle.
  • Patent Literature 1 and Patent Literature 2 As headlight units and bulbs capable of switching the irradiation range, those disclosed in Patent Literature 1 and Patent Literature 2 are known.
  • the headlight disclosed in Patent Literature 1 adjusts an irradiation range by detecting a leading vehicle or the like by a camera and mechanically operating a shade that cuts a part of light distribution from a light source. Mainly configuration.
  • the bulb disclosed in Patent Document 2 is a bulb suitable for application to a fog lamp of a vehicle, and uses an LED as a light source.
  • the LED bulb disclosed in Patent Document 2 has a configuration in which LED chips that emit light having different colors such as white and light yellow are constructed and arranged. As the light distribution position (range) of each LED chip, white light is distributed so as to illuminate a relatively distant range from the vehicle, and light yellow is close to the vehicle and light is applied to a wider range than white light. Has been adjusted to be.
  • irradiation with a white LED chip is normally performed, and irradiation with a light yellow LED chip is added when a wider range such as a roadside zone is to be illuminated.
  • the LED bulb disclosed in Patent Literature 2 has no mechanical structure, has a simple configuration, and can suppress a rise in manufacturing cost.
  • the number of LED chips that supply current is increased with an increase in the irradiation range, the amount of heat generated by the entire bulb exceeds the amount of heat radiation, which may cause various problems.
  • the present invention provides an LED bulb unit for a vehicle that solves the above-mentioned problems, makes it possible to adjust the irradiation range while eliminating the need for mechanical operation control, and controls the amount of heat generated by the entire bulb.
  • the purpose is to do.
  • a vehicle LED bulb unit comprising: a vehicle LED bulb having a plurality of LED chips on a substrate; and a control unit for controlling light emission of the LED bulb.
  • each LED chip has a corresponding irradiation area
  • the control means controls the number of irradiation areas, the irradiation areas requiring higher luminance than other irradiation areas, and the total heat generation. It is characterized in that the current value for the LED chip supplying the current is increased or decreased based on the amount.
  • the irradiation region is defined as at least a high beam region and a low beam region, and a sub beam region in which at least one of the regions overlaps a part of the irradiation range. It is good to According to such a feature, in addition to switching headlights of a general vehicle, an additional light projecting area can be provided in a high beam area or a low beam area as a large frame, and driving in a dark place , It is possible to enhance the visibility and safety.
  • the control unit supplies the current based on at least one of speed information, illuminance information, steering angle information, and inter-vehicle information from the vehicle.
  • the selection of the LED chip and the increase / decrease and adjustment of the current value may be performed. According to this feature, it is possible to automatically change the irradiation range and the like of the headlight according to the state information of the vehicle.
  • the control unit supplies a current based on a change in a voltage pattern input by switching between a low state and a completely extinguished state of the headlight in the vehicle. It is also possible to select the LED chip and increase / decrease and adjust the current value. According to having such a feature, even when the LED chips other than the LED chip assigned to the high beam region and the LED chip assigned to the low beam region are arbitrarily switched to emit light, a switch or a switch is provided on the console of the vehicle. There is no need to increase the number of controllers.
  • a controller capable of switching supply of a current value to an arbitrary LED chip may be connected to the control means in the vehicle LED bulb unit having the above-described features. According to this feature, the switching operation of the pattern for causing the LED chip to emit light can be facilitated.
  • the LED bulb unit for a vehicle having the features as described above, it is possible to adjust the irradiation range and control the amount of heat generated by the entire bulb, without the need for mechanical operation control.
  • FIG. 1 is a diagram showing a plan configuration of the vehicle LED bulb unit according to the first embodiment.
  • FIG. 2 is a diagram showing the same side configuration.
  • FIG. 3 is a perspective view showing the configuration of the vehicle LED bulb according to the first embodiment.
  • the vehicle LED bulb unit includes the LED bulb 12 and the control unit 26.
  • the LED bulb 12 has a base 14, a bulb main body 16, and a bulb heat radiating section 18.
  • the base 14 is a portion serving as a mounting base for a light unit (not shown) of a vehicle (not shown).
  • the bulb main body 16 is a part arranged inside the light unit with the base 14 as a base point.
  • the bulb heat radiating portion 18 is a portion arranged outside the light unit with the base 14 as a base point.
  • the control means 26 is a part connected to the bulb heat radiating section 18 to control and adjust the supply current to the LED chips 22 (LED chip Lo22a, LED chip Hi22b, LED chip Sub22c) provided in the valve body 16. .
  • the bulb main body 16 has at least a substrate 20, an LED chip 22, and a reflector 24.
  • the board 20 has a role of arranging an LED chip 22 (to be described in detail later) at an arbitrary position and configuring a wiring pattern (not shown) for supplying a current to each LED chip 22.
  • the substrate 20 is made of a metal having excellent thermal conductivity such as copper or aluminum, it plays a role as a heat radiating plate for radiating heat when the LED chip 22 emits light.
  • an unillustrated wiring pattern may be formed by forming an insulating layer on the surface of the substrate and interposing the insulating layer.
  • the LED chips in the low beam area (LED chips Lo22a) and the LED chips in the high beam area (LED chips Hi22b) are roughly described.
  • the LED chip Lo22a is arranged near the front of the bulb main body 16
  • the LED chip Hi22b is arranged near the rear of the bulb main body 16.
  • the low beam region in the LED bulb 12 includes a steady region that illuminates an irradiation range according to the optical axis inspection at the time of vehicle inspection, and a fog region (sub beam region) that illuminates a range closer to the vehicle than the steady region.
  • the LED chip 22 disposed in the fog area is an LED chip Sub22c.
  • the steady region is a region that brightly illuminates the vicinity of the irradiation range defined by the cutoff line and the elbow point
  • the fog region may be a region that illuminates a range below the cutoffline widely.
  • the fog area is further below the cut-off line and illuminates the area where the low beam area partially overlaps with the low beam area, even if the irradiation area is widened, there is a possibility that the driving safety of the oncoming vehicle may be hindered. Absent.
  • the valve heat radiating portion 18 is provided with a connection terminal 18a electrically connected to the substrate 20 provided on the valve main body 16, and with a heat radiating fan (not shown).
  • the control means 26 is coupler-coupled via a connection terminal 18a provided on the bulb heat radiating section 18, and has an LED chip 22 (LED chip Lo22a, LED chip Hi22b, LED chip Sub22c) of each region provided on the valve body 16. ) Controls and regulates the supply current to the power supply.
  • LED chip 22 LED chip Lo22a, LED chip Hi22b, LED chip Sub22c
  • the control unit 26 includes a bridge 28, a power supply control circuit 30, a processor 32, LED drive circuits 34a and 34b, and a switching unit 36.
  • the bridge 28 is a rectifier that converts the low beam voltage VinL and the high beam voltage VinH input by the headlight switching control of the vehicle into predetermined voltages.
  • the power control circuit 30 is a circuit for controlling the power of the processor 32, which will be described in detail later. Even if the power supply from the bridge 28 is cut off, it plays a role of maintaining the power supply voltage to the processor 32 so that the processor 32 operates for several seconds. Specifically, by providing such a function, the counter function and the timer function of the processor 32 are secured for several seconds even when the power supply to the power supply control circuit 30 is cut off. For this reason, as will be described in detail later, it is possible to determine even when the mode selection operation including the all-light-off state (the state in which neither VinH nor VinL is input) is performed.
  • the processor 32 is an element for selecting a region to supply a current (the LED chips 22 arranged in each region) and determining a current value to be supplied to the LED chips 22 arranged in each region.
  • the selection of the LED chip 22 is made based on input information of VinL and VinH, and outputs a drive signal to the LED drive circuits 34a and 34b and the switching unit 36.
  • the selection of the drive signal based on the input information of VinL and VinH for example, the following may be used.
  • the processor 32 When VinL is input to the processor 32, the processor 32 outputs a drive signal to the LED drive circuit 34a. As a result, only the LED chip Lo22a arranged as a chip in the low beam area is turned on.
  • the processor 32 outputs a drive signal to the LED drive circuit 34b and the switching unit 36.
  • the driving signal output to the switching unit 36 is a switching signal for flowing the current output from the LED driving circuit 34b to the LED chip Hi22b side.
  • the LED chip Hi22b arranged as a chip in the high beam area is turned on.
  • a drive signal may be input to the LED drive circuit 34a together with the LED drive circuit 34b and the switching unit 36.
  • the values of the voltages output by the LED driving circuit 34b and the LED driving circuit 34a are adjusted so that the current value supplied to the LED chip Lo22a is smaller than that of the LED chip Hi22b. It is preferable to suppress the heat generation.
  • the processor determines that the current supply mode is selected for the LED chip Lo22a and the LED chip Sub22c, and the LED drive circuit 34a, 34b, and outputs a drive signal to the switching unit 36.
  • the driving signal output to the switching unit 36 is a switching signal for flowing the current output from the LED driving circuit 34b to the LED chip Sub22c side.
  • the LED drive circuits 34a and 34b are elements that control the value of the current supplied to the LED chip 22.
  • a current value supplied to the LED chip 22 is determined by a drive signal input from the processor 32.
  • the current value input to the LED drive circuits 34a and 34b from the bridge 28 is determined by the drive signal by adjusting the output voltage based on the drive signal input to each of the LED drive circuits 34a and 34b. The value is converted and output.
  • the switching unit 36 is an element that switches an area where the LED chips 22 that supply current are arranged. In the case of the present embodiment, switching is performed between the LED chip Hi22b arranged in the high beam area and the LED chip Sub22c arranged in the fog area.
  • the LED chips 22 arranged in the respective areas are determined based on the luminance and the total heat generation of the desired area.
  • the supply current ratio is changed. For example, when illuminating mainly in the high beam region, the current ratio to the LED chip Hi22b arranged in the high beam region is 77% (rated current ratio), and the current ratio to the LED chip Lo22a arranged in the low beam region is 19% (rated current ratio). It can be adjusted so that
  • the LED bulb unit 10A is characterized in that the current supply amounts to the LED chip Hi22b and the LED chip Sub22c can be controlled simultaneously and independently.
  • the switching unit 36 is disposed between the LED drive circuit 34b and the LED chips Hi22b and Sub22c, and the lighting control of the LED chips Hi22b and the LED chips 22c is selectively performed.
  • the LED driving circuits 34b and 34c are connected to the LED chip Hi22b and the LED chip Sub22c, respectively.
  • the LED chip Hi22b and the LED chip Sub22c can be selectively turned on, of course, simultaneously turned on, and the brightness can be adjusted by controlling the supplied current value. .
  • the current ratio to the LED chip Hi22b is 77%
  • the current ratio to the LED chip Lo22a is 19%
  • the current ratio to the LED chip Sub22c is 77%. While illuminating the high beam area brightly, the fog area is also brightly illuminated, so that it is possible to enhance the safety when the vehicle is running.
  • the total heat value of the LED bulb 12 can be suppressed by adjusting the current value (control of the current ratio) for each LED chip.
  • the arrangement area of the LED chip 22 is defined as the high beam area, the low beam area, and the fog area.
  • the arrangement area of these LED chips 22 may change depending on the relationship with the reflector in the light unit, and is not strictly determined.
  • the LED bulb unit 10 according to the present invention For example, the number of irradiation areas of 10A can be two or four or more, such as a main irradiation area and a sub-area that illuminates the surrounding area.
  • the number of LED drive circuits may be increased so that the current value can be adjusted in more detail in each irradiation area.
  • a white LED and a pale yellow LED may be mixed as the LED chips 22 arranged in each area so that the color of the headlight can be changed according to the weather or road conditions.
  • the optical axis can be adjusted by selecting the LED chip 22 to emit light.
  • the output of the drive signal for causing the LED chip Sub22c to emit light is performed by alternately and continuously inputting VinL and the all-light-off state a plurality of times.
  • a controller may be separately connected to the control means 26, and a drive signal for causing the LED chip Sub22c to emit light may be input.
  • this signal a method other than manual operation, for example, speed information from a vehicle may be input to the processor 32, and switching light emission may be automatically performed according to the traveling speed.
  • the processor 32 inputs at least one of illuminance information based on lights of a preceding vehicle or an oncoming vehicle, steering angle information on a curve or the like, and inter-vehicle information. May be selected, and the current value may be controlled.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Abstract

[Problem] To provide a vehicle LED bulb unit capable of adjusting an illumination range and controlling the amount of heat generated by a bulb as a whole, without requiring mechanical operation control. [Solution] An LED bulb unit (10) is provided with an LED bulb (12) having a plurality of LED chips (22) on a substrate, and a control means (26) for controlling light emission of the LED bulb (12), and is characterized in that a corresponding illumination area is determined for each LED chip (22), and the control means (26) increases or decreases the electric current value for the LED chips (22) to be supplied with electric current, on the basis of the number of illumination areas, an illumination area requiring higher luminance than other illumination areas, and the total amount of heat generated.

Description

車両用ＬＥＤバルブユニットLED bulb unit for vehicles
　本発明は、ＬＥＤバルブユニットに係り、特に照射範囲の調整を可能とし、車両の前照灯への適用に好適なＬＥＤバルブの照度等を調整可能なユニットに関する。 The present invention relates to an LED bulb unit, and more particularly, to a unit that can adjust an irradiation range and can adjust the illuminance and the like of an LED bulb suitable for application to a headlight of a vehicle.
　照射範囲の切り替えを行う事ができる前照灯ユニットやバルブとしては、特許文献１や特許文献２に開示されているようなものが知られている。特許文献１に開示されている前照灯は、カメラにより前走車等を検出し、光源からの配光の一部をカットするシェードを機械的に動作させることで、照射範囲の調整を行う構成を主体としている。 As headlight units and bulbs capable of switching the irradiation range, those disclosed in Patent Literature 1 and Patent Literature 2 are known. The headlight disclosed in Patent Literature 1 adjusts an irradiation range by detecting a leading vehicle or the like by a camera and mechanically operating a shade that cuts a part of light distribution from a light source. Mainly configuration.
　特許文献２に開示されているバルブは、車両のフォグランプへの適用に適したバルブとされており、光源にＬＥＤを用いている。特許文献２に開示されているＬＥＤバルブでは、白色と淡黄色といった色味の異なる光を発するＬＥＤチップを建設配置する構成としている。そして、各ＬＥＤチップの配光位置（範囲）として、白色は、車両から比較的離れた範囲を照らすように配光し、淡黄色は、車両に近く、白色光よりも幅広い範囲に光が照射されるように調整されている。 バ ル ブ The bulb disclosed in Patent Document 2 is a bulb suitable for application to a fog lamp of a vehicle, and uses an LED as a light source. The LED bulb disclosed in Patent Document 2 has a configuration in which LED chips that emit light having different colors such as white and light yellow are constructed and arranged. As the light distribution position (range) of each LED chip, white light is distributed so as to illuminate a relatively distant range from the vehicle, and light yellow is close to the vehicle and light is applied to a wider range than white light. Has been adjusted to be.
　このような構成のバルブでは、通常、白色のＬＥＤチップによる照射を行い、路側帯等、より広い範囲を照らしたい場合には、淡黄色のＬＥＤチップによる照射を付加するとされている。 バ ル ブ In a bulb having such a configuration, irradiation with a white LED chip is normally performed, and irradiation with a light yellow LED chip is added when a wider range such as a roadside zone is to be illuminated.
特許第５９４７６８２号公報Japanese Patent No. 5947682 特許第６１６１８４６号公報Japanese Patent No. 6161846
　上記特許文献に開示されているようなユニットやバルブによれば、必要に応じた照射範囲を得ることができると考えられる。しかし、特許文献１に開示されている前照灯ユニットは、照射範囲の切り替えについて、機械的にシェードを動作させる構成を採っている。このため、ユニット自体の大型化や、製造コストの高騰などが懸念されるといった問題がある。 According to the unit and the valve as disclosed in the above-mentioned patent documents, it is considered that an irradiation range as needed can be obtained. However, the headlight unit disclosed in Patent Literature 1 employs a configuration in which the shade is mechanically operated for switching the irradiation range. For this reason, there is a problem that the size of the unit itself may be increased or the production cost may be increased.
　一方、特許文献２に開示されているＬＥＤバルブは、機械的な構造が無く、かつ簡易な構成とし、製造コストの高騰も抑えることができると考えられる。しかし、照射範囲の増加に伴って電流を供給するＬＥＤチップの数を増加させた場合、バルブ全体としての発熱量が放熱量を超えてしまい、様々な不具合を生じさせる虞がある。 On the other hand, the LED bulb disclosed in Patent Literature 2 has no mechanical structure, has a simple configuration, and can suppress a rise in manufacturing cost. However, when the number of LED chips that supply current is increased with an increase in the irradiation range, the amount of heat generated by the entire bulb exceeds the amount of heat radiation, which may cause various problems.
　そこで本発明では、上記問題点を解決し、機械的な動作制御を不要としつつ、照射範囲の調整を可能とし、かつバルブ全体としての発熱量を制御することのできる車両用ＬＥＤバルブユニットを提供することを目的とする。 In view of the above, the present invention provides an LED bulb unit for a vehicle that solves the above-mentioned problems, makes it possible to adjust the irradiation range while eliminating the need for mechanical operation control, and controls the amount of heat generated by the entire bulb. The purpose is to do.
　上記目的を達成するための本発明に係る車両用ＬＥＤバルブユニットは、基板に複数のＬＥＤチップを備えた車両用ＬＥＤバルブと、前記ＬＥＤバルブの発光を制御する制御手段とを備えた車両用ＬＥＤバルブユニットであって、各ＬＥＤチップにはそれぞれ、対応
する照射領域が定められ、前記制御手段は、照射領域の数と、他の照射領域よりも高い輝度を必要とする照射領域、および総発熱量に基づいて、電流を供給するＬＥＤチップに対する電流値の増減を図ることを特徴とする。 According to one aspect of the present invention, there is provided a vehicle LED bulb unit comprising: a vehicle LED bulb having a plurality of LED chips on a substrate; and a control unit for controlling light emission of the LED bulb. In the bulb unit, each LED chip has a corresponding irradiation area, and the control means controls the number of irradiation areas, the irradiation areas requiring higher luminance than other irradiation areas, and the total heat generation. It is characterized in that the current value for the LED chip supplying the current is increased or decreased based on the amount.
　また、上記のような特徴を有する車両用ＬＥＤバルブユニットにおいて前記照射領域は、少なくともハイビーム領域とロービーム領域、および少なくともいずれか一方の領域と照射範囲の一部が重なるサブビーム領域が定められているようにすると良い。このような特徴を有することによれば、一般的な車両の前照灯の切り替えに加え、大枠としてのハイビーム領域や、ロービーム領域に、付加的な投光領域を設けることができ、暗所走行における視認性や安全性を高めることが可能となる。 Further, in the LED bulb unit for a vehicle having the above-described features, the irradiation region is defined as at least a high beam region and a low beam region, and a sub beam region in which at least one of the regions overlaps a part of the irradiation range. It is good to According to such a feature, in addition to switching headlights of a general vehicle, an additional light projecting area can be provided in a high beam area or a low beam area as a large frame, and driving in a dark place , It is possible to enhance the visibility and safety.
　また、上記のような特徴を有する車両用ＬＥＤバルブユニットにおいて前記制御手段は、車両からの速度情報、照度情報、舵角情報、及び車間情報の少なくとも１つの情報に基づいて、前記電流を供給する前記ＬＥＤチップの選択、及び前記電流値の増減並びに調整を行うようにしても良い。このような特徴を有することによれば、車両の状態情報に応じて自動で前照灯の照射範囲等を変化させることが可能となる。 In the vehicle LED bulb unit having the above-described features, the control unit supplies the current based on at least one of speed information, illuminance information, steering angle information, and inter-vehicle information from the vehicle. The selection of the LED chip and the increase / decrease and adjustment of the current value may be performed. According to this feature, it is possible to automatically change the irradiation range and the like of the headlight according to the state information of the vehicle.
　また、上記のような特徴を有する車両用ＬＥＤバルブユニットにおいて前記制御手段は、車両における前照灯のローと全消灯状態との切替により入力される電圧パターンの変化に基づいて、電流を供給する前記ＬＥＤチップの選択、及び電流値の増減並びに調整を行うようにすることもできる。このような特徴を有することによれば、ハイビーム領域に割り当てられたＬＥＤチップとロービーム領域に割り当てられたＬＥＤチップ以外のＬＥＤチップを任意に切替発光させる場合であっても、車両のコンソールにスイッチやコントローラを増やす必要がない。 Further, in the vehicle LED bulb unit having the above-described features, the control unit supplies a current based on a change in a voltage pattern input by switching between a low state and a completely extinguished state of the headlight in the vehicle. It is also possible to select the LED chip and increase / decrease and adjust the current value. According to having such a feature, even when the LED chips other than the LED chip assigned to the high beam region and the LED chip assigned to the low beam region are arbitrarily switched to emit light, a switch or a switch is provided on the console of the vehicle. There is no need to increase the number of controllers.
　さらに、上記のような特徴を有する車両用ＬＥＤバルブユニットにおける前記制御手段には、任意のＬＥＤチップに対する電流値の供給切替を可能なコントローラを接続しても良い。このような特徴を有することによれば、ＬＥＤチップを発光させるパターンの切り替え操作を容易なものとすることができる。 Further, a controller capable of switching supply of a current value to an arbitrary LED chip may be connected to the control means in the vehicle LED bulb unit having the above-described features. According to this feature, the switching operation of the pattern for causing the LED chip to emit light can be facilitated.
　上記のような特徴を有する車両用ＬＥＤバルブユニットによれば、機械的な動作制御を不要としつつ、照射範囲の調整を可能とし、かつバルブ全体としての発熱量を制御することができる。 According to the LED bulb unit for a vehicle having the features as described above, it is possible to adjust the irradiation range and control the amount of heat generated by the entire bulb, without the need for mechanical operation control.
第１実施形態に係る車両用ＬＥＤバルブユニットの平面構成を示す図である。It is a figure showing the plane composition of the LED bulb unit for vehicles concerning a 1st embodiment. 第１実施形態に係る車両用ＬＥＤバルブユニットの側面構成を示す図である。It is a figure showing the side view composition of the LED bulb unit for vehicles concerning a 1st embodiment. 第１実施形態に係る車両用ＬＥＤバルブの構成を示す斜視図である。It is a perspective view showing the composition of the LED bulb for vehicles concerning a 1st embodiment. 第１実施形態に係る車両用ＬＥＤバルブユニットの回路構成を示すブロック図である。It is a block diagram showing the circuit composition of the LED bulb unit for vehicles concerning a 1st embodiment. 第２実施形態に係る車両用ＬＥＤバルブユニットの回路構成を示すブロック図である。It is a block diagram showing the circuit composition of the LED bulb unit for vehicles concerning a 2nd embodiment.
　以下、本発明の車両用ＬＥＤバルブユニットに係る実施の形態について、図面を参照して詳細に説明する。まず、図１から図３を参照して、第１実施形態に係る車両用ＬＥＤバルブユニットの外観構成について説明する。なお、図面にいて図１は、第１実施形態に係
る車両用ＬＥＤバルブユニットの平面構成を示す図である。図２は、同側面構成を示す図である。さらに、図３は、第１実施形態に係る車両用ＬＥＤバルブの構成を示す斜視図である。 Hereinafter, embodiments of a vehicle LED bulb unit according to the present invention will be described in detail with reference to the drawings. First, an external configuration of an LED bulb unit for a vehicle according to a first embodiment will be described with reference to FIGS. 1 to 3. FIG. 1 is a diagram showing a plan configuration of the vehicle LED bulb unit according to the first embodiment. FIG. 2 is a diagram showing the same side configuration. FIG. 3 is a perspective view showing the configuration of the vehicle LED bulb according to the first embodiment.
［第１実施形態］
　本実施形態に係る車両用ＬＥＤバルブユニット（以下、単にＬＥＤバルブユニット１０と称す）は、ＬＥＤバルブ１２と、制御手段２６とを有する。ＬＥＤバルブ１２は、口金１４と、バルブ本体１６、およびバルブ放熱部１８とを有する。口金１４は、図示しない車両のライトユニット（不図示）に対する取付基部となる部位である。バルブ本体１６は、口金１４を基点として、ライトユニットの内部に配置される部位である。バルブ放熱部１８は、口金１４を基点として、ライトユニットの外部に配置される部位である。また、制御手段２６は、バルブ放熱部１８に接続され、バルブ本体１６に備えられたＬＥＤチップ２２（ＬＥＤチップＬｏ２２ａ、ＬＥＤチップＨｉ２２ｂ、ＬＥＤチップＳｕｂ２２ｃ）に対する供給電流の制御、調整を行う部位である。 [First Embodiment]
The vehicle LED bulb unit according to the present embodiment (hereinafter, simply referred to as the LED bulb unit 10) includes the LED bulb 12 and the control unit 26. The LED bulb 12 has a base 14, a bulb main body 16, and a bulb heat radiating section 18. The base 14 is a portion serving as a mounting base for a light unit (not shown) of a vehicle (not shown). The bulb main body 16 is a part arranged inside the light unit with the base 14 as a base point. The bulb heat radiating portion 18 is a portion arranged outside the light unit with the base 14 as a base point. Further, the control means 26 is a part connected to the bulb heat radiating section 18 to control and adjust the supply current to the LED chips 22 (LED chip Lo22a, LED chip Hi22b, LED chip Sub22c) provided in the valve body 16. .
　バルブ本体１６は、少なくとも基板２０と、ＬＥＤチップ２２、およびリフレクタ２４を有する。基板２０は、詳細を後述するＬＥＤチップ２２を任意の位置に配置すると共に、各ＬＥＤチップ２２に電流を供給するための配線パターン（不図示）を構成する役割を担う。また、基板２０を銅やアルミニウム等の熱伝導性に優れた金属で構成した場合には、ＬＥＤチップ２２を発光させた際の熱を放熱するための放熱板としての役割を担う。なお、基板２０を金属により構成する場合、図示しない配線パターンは、基板表面に絶縁層を形成し、この絶縁層を介して構成すれば良い。 The bulb main body 16 has at least a substrate 20, an LED chip 22, and a reflector 24. The board 20 has a role of arranging an LED chip 22 (to be described in detail later) at an arbitrary position and configuring a wiring pattern (not shown) for supplying a current to each LED chip 22. When the substrate 20 is made of a metal having excellent thermal conductivity such as copper or aluminum, it plays a role as a heat radiating plate for radiating heat when the LED chip 22 emits light. When the substrate 20 is made of a metal, an unillustrated wiring pattern may be formed by forming an insulating layer on the surface of the substrate and interposing the insulating layer.
　ＬＥＤチップ２２の配置パターンは、ライトユニットにおけるリフレクタとの関係にもよるが、本実施形態の場合、大枠として、ロービーム領域のＬＥＤチップ（ＬＥＤチップＬｏ２２ａ）とハイビーム領域のＬＥＤチップ（ＬＥＤチップＨｉ２２ｂ）に分割され、ＬＥＤチップＬｏ２２ａをバルブ本体１６の前寄り、ＬＥＤチップＨｉ２２ｂをバルブ本体１６の後ろ寄りに配置する構成としている。 Although the arrangement pattern of the LED chips 22 depends on the relationship with the reflector in the light unit, in the case of the present embodiment, the LED chips in the low beam area (LED chips Lo22a) and the LED chips in the high beam area (LED chips Hi22b) are roughly described. The LED chip Lo22a is arranged near the front of the bulb main body 16, and the LED chip Hi22b is arranged near the rear of the bulb main body 16.
　また、本実施形態に係るＬＥＤバルブ１２におけるロービーム領域は、車検時の光軸検査に合わせた照射範囲を照らす定常領域と、定常領域よりも車両に近い範囲を幅広く照らすフォグ領域（サブビーム領域）とに分けられており、このフォグ領域に配置されているＬＥＤチップ２２をＬＥＤチップＳｕｂ２２ｃとしている。ここで、定常領域をカットオフラインとエルボー点によって定められた照射範囲近傍を明るく照らす領域とした場合、フォグ領域は、カットオフラインより下側の範囲を幅広く照らす領域とすれば良い。なお、カットオフラインよりもさらに下側であって、ロービーム領域と一部が重なった範囲を照らすフォグ領域であれば、照射範囲の幅を広げたとしても、対向車の運転の安全を妨げる虞はない。 Further, the low beam region in the LED bulb 12 according to the present embodiment includes a steady region that illuminates an irradiation range according to the optical axis inspection at the time of vehicle inspection, and a fog region (sub beam region) that illuminates a range closer to the vehicle than the steady region. , And the LED chip 22 disposed in the fog area is an LED chip Sub22c. Here, when the steady region is a region that brightly illuminates the vicinity of the irradiation range defined by the cutoff line and the elbow point, the fog region may be a region that illuminates a range below the cutoffline widely. In addition, if the fog area is further below the cut-off line and illuminates the area where the low beam area partially overlaps with the low beam area, even if the irradiation area is widened, there is a possibility that the driving safety of the oncoming vehicle may be hindered. Absent.
　バルブ放熱部１８には、バルブ本体１６に備えられた基板２０と電気的に接続された接続端子１８ａが備えられると共に、図示しない放熱ファン等が備えられている。 The valve heat radiating portion 18 is provided with a connection terminal 18a electrically connected to the substrate 20 provided on the valve main body 16, and with a heat radiating fan (not shown).
　制御手段２６は、バルブ放熱部１８に備えられた接続端子１８ａを介してカプラー接続されており、バルブ本体１６に備えられた各領域のＬＥＤチップ２２（ＬＥＤチップＬｏ２２ａ、ＬＥＤチップＨｉ２２ｂ、ＬＥＤチップＳｕｂ２２ｃ）に対する供給電流の制御、調整を行う役割を担う。 The control means 26 is coupler-coupled via a connection terminal 18a provided on the bulb heat radiating section 18, and has an LED chip 22 (LED chip Lo22a, LED chip Hi22b, LED chip Sub22c) of each region provided on the valve body 16. ) Controls and regulates the supply current to the power supply.
［回路構成］
　次に、図４に示す回路ブロック図を参照して、制御手段の具体的な構成の一例と、ＬＥＤチップに対する電流の供給について説明する。 [Circuit configuration]
Next, an example of a specific configuration of the control unit and supply of current to the LED chip will be described with reference to a circuit block diagram illustrated in FIG.
　制御手段２６は、ブリッジ２８と、電源制御回路３０、プロセッサ３２、ＬＥＤ駆動回路３４ａ，３４ｂ、および切替部３６を有する。ブリッジ２８は、車両の前照灯切替制御によって入力されるロービーム電圧ＶｉｎＬと、ハイビーム電圧ＶｉｎＨを所定の電圧に変換する整流手段である。 The control unit 26 includes a bridge 28, a power supply control circuit 30, a processor 32, LED drive circuits 34a and 34b, and a switching unit 36. The bridge 28 is a rectifier that converts the low beam voltage VinL and the high beam voltage VinH input by the headlight switching control of the vehicle into predetermined voltages.
　電源制御回路３０は、詳細を後述するプロセッサ３２の電源を制御するための回路である。ブリッジ２８からの電力供給が遮断されても、プロセッサ３２が数秒間動作するように、プロセッサ３２への電源電圧を保持する役割を担う。具体的には、このような機能を設けることにより、電源制御回路３０への電力供給が遮断された場合でも、数秒間、プロセッサ３２のカウンタ機能やタイマ機能が確保されることとなる。このため、詳細を後述するように、全消灯状態（ＶｉｎＨ、ＶｉｎＬともに入力が無い状態）を含むモード選択動作が成された場合であっても、その判定が可能となる。 The power control circuit 30 is a circuit for controlling the power of the processor 32, which will be described in detail later. Even if the power supply from the bridge 28 is cut off, it plays a role of maintaining the power supply voltage to the processor 32 so that the processor 32 operates for several seconds. Specifically, by providing such a function, the counter function and the timer function of the processor 32 are secured for several seconds even when the power supply to the power supply control circuit 30 is cut off. For this reason, as will be described in detail later, it is possible to determine even when the mode selection operation including the all-light-off state (the state in which neither VinH nor VinL is input) is performed.
　プロセッサ３２は、電流を供給する領域（各領域に配置されたＬＥＤチップ２２）を選択すると共に、各領域に配置されたＬＥＤチップ２２に供給する電流値を定めるための要素である。ＬＥＤチップ２２の選択は、ＶｉｎＬと、ＶｉｎＨの入力情報に基づいて成され、ＬＥＤ駆動回路３４ａ，３４ｂと切替部３６とに駆動信号を出力する。ＶｉｎＬとＶｉｎＨの入力情報に基づく駆動信号の選定の一例としては、例えば次のようなもので良い。 The processor 32 is an element for selecting a region to supply a current (the LED chips 22 arranged in each region) and determining a current value to be supplied to the LED chips 22 arranged in each region. The selection of the LED chip 22 is made based on input information of VinL and VinH, and outputs a drive signal to the LED drive circuits 34a and 34b and the switching unit 36. As an example of the selection of the drive signal based on the input information of VinL and VinH, for example, the following may be used.
　まず、プロセッサ３２に対してＶｉｎＬが入力されている場合、プロセッサ３２は、ＬＥＤ駆動回路３４ａに駆動信号を出力する。これによりロービーム領域のチップとして配置されたＬＥＤチップＬｏ２２ａのみが点灯することとなる。 First, when VinL is input to the processor 32, the processor 32 outputs a drive signal to the LED drive circuit 34a. As a result, only the LED chip Lo22a arranged as a chip in the low beam area is turned on.
　次に、ＶｉｎＨが入力されている場合、プロセッサ３２は、ＬＥＤ駆動回路３４ｂと切替部３６に駆動信号を出力する。この時、切替部３６に出力する駆動信号は、ＬＥＤ駆動回路３４ｂから出力される電流をＬＥＤチップＨｉ２２ｂ側へ流すための切替信号とする。これにより、ハイビーム領域のチップとして配置されたＬＥＤチップＨｉ２２ｂが点灯することとなる。なお、ＶｉｎＨが入力されている場合には、ＬＥＤ駆動回路３４ｂと切替部３６と共に、ＬＥＤ駆動回路３４ａに駆動信号を入力するようにしても良い。この場合には、ＬＥＤチップＨｉ２２ｂよりもＬＥＤチップＬｏ２２ａに供給する電流値が小さくなるように、ＬＥＤ駆動回路３４ｂとＬＥＤ駆動回路３４ａが出力する電圧の値を調整し、発光するＬＥＤチップ２２による総発熱量を抑制するようにすると良い。 Next, when VinH is input, the processor 32 outputs a drive signal to the LED drive circuit 34b and the switching unit 36. At this time, the driving signal output to the switching unit 36 is a switching signal for flowing the current output from the LED driving circuit 34b to the LED chip Hi22b side. As a result, the LED chip Hi22b arranged as a chip in the high beam area is turned on. When VinH is input, a drive signal may be input to the LED drive circuit 34a together with the LED drive circuit 34b and the switching unit 36. In this case, the values of the voltages output by the LED driving circuit 34b and the LED driving circuit 34a are adjusted so that the current value supplied to the LED chip Lo22a is smaller than that of the LED chip Hi22b. It is preferable to suppress the heat generation.
　さらに、ＶｉｎＬと全消灯状態が交互に複数回、連続的に入力された場合、プロセッサは、ＬＥＤチップＬｏ２２ａとＬＥＤチップＳｕｂ２２ｃに電流を供給するモードの選択であると判定し、ＬＥＤ駆動回路３４ａ，３４ｂと、切替部３６に対して駆動信号を出力する。この時、切替部３６に対して出力する駆動信号は、ＬＥＤ駆動回路３４ｂから出力される電流をＬＥＤチップＳｕｂ２２ｃ側へ流すための切替信号とする。これにより、バルブ本体１６に配置されたＬＥＤチップ２２のうち、ＬＥＤチップＬｏ２２ａとＬＥＤチップＳｕｂ２２ｃが点灯し、ロービーム領域を照らすと共に、フォグ領域も照らすこととなる。 Furthermore, when VinL and the all-light-off state are successively input alternately plural times, the processor determines that the current supply mode is selected for the LED chip Lo22a and the LED chip Sub22c, and the LED drive circuit 34a, 34b, and outputs a drive signal to the switching unit 36. At this time, the driving signal output to the switching unit 36 is a switching signal for flowing the current output from the LED driving circuit 34b to the LED chip Sub22c side. As a result, among the LED chips 22 arranged on the bulb body 16, the LED chip Lo22a and the LED chip Sub22c are turned on, illuminating the low beam area and illuminating the fog area.
　ＬＥＤ駆動回路３４ａ，３４ｂは、ＬＥＤチップ２２に供給する電流値の制御を行う要素である。ＬＥＤチップ２２に供給する電流値は、プロセッサ３２から入力される駆動信号により定められる。ブリッジ２８からＬＥＤ駆動回路３４ａ，３４ｂに入力される電流値は、各ＬＥＤ駆動回路３４ａ，３４ｂに入力される駆動信号に基づいて出力側の電圧の調整が成されることで、駆動信号により定められた値に変換されて出力される。 The LED drive circuits 34a and 34b are elements that control the value of the current supplied to the LED chip 22. A current value supplied to the LED chip 22 is determined by a drive signal input from the processor 32. The current value input to the LED drive circuits 34a and 34b from the bridge 28 is determined by the drive signal by adjusting the output voltage based on the drive signal input to each of the LED drive circuits 34a and 34b. The value is converted and output.
　切替部３６は、電流を供給するＬＥＤチップ２２を配置した領域の切り替えを行う要素である。本実施形態の場合、ハイビーム領域に配置されたＬＥＤチップＨｉ２２ｂと、フォグ領域に配置されたＬＥＤチップＳｕｂ２２ｃとの間での切り替えが成されるようにしている。 The switching unit 36 is an element that switches an area where the LED chips 22 that supply current are arranged. In the case of the present embodiment, switching is performed between the LED chip Hi22b arranged in the high beam area and the LED chip Sub22c arranged in the fog area.
［作用、効果］
　本実施形態に係るＬＥＤバルブユニット１０では、複数の領域に配置されたＬＥＤチップ２２を同時に点灯させる際、所望する領域の輝度や総発熱量等に基づき、各領域に配置されたＬＥＤチップ２２に供給する電流割合を変化させている。例えばハイビーム領域を主体として照らす場合、ハイビーム領域に配置されたＬＥＤチップＨｉ２２ｂに対する電流割合が７７％（定格電流比）、ロービーム領域に配置されたＬＥＤチップＬｏ２２ａに対する電流割合が１９％（定格電流比）となるように調整することができる。 [Action, effect]
In the LED bulb unit 10 according to the present embodiment, when the LED chips 22 arranged in a plurality of areas are simultaneously turned on, the LED chips 22 arranged in the respective areas are determined based on the luminance and the total heat generation of the desired area. The supply current ratio is changed. For example, when illuminating mainly in the high beam region, the current ratio to the LED chip Hi22b arranged in the high beam region is 77% (rated current ratio), and the current ratio to the LED chip Lo22a arranged in the low beam region is 19% (rated current ratio). It can be adjusted so that
　このような電流割合制御により、ハイビームの照射範囲に十分な輝度を得つつ、車両に近いロービーム領域も明るく照らすことができる。また、一方で、ＬＥＤバルブ１２としての総発熱量を抑えることができる。よって、発熱過多による不具合の発生等を抑制することができる。 に よ り By such a current ratio control, it is possible to illuminate the low beam area close to the vehicle brightly while obtaining sufficient luminance in the high beam irradiation range. On the other hand, the total heat generation of the LED bulb 12 can be suppressed. Therefore, it is possible to suppress the occurrence of a problem due to excessive heat generation.
［第２実施形態］
　次に図５に示すブロック図を参照して、本発明の車両用ＬＥＤバルブユニットに係る第２実施形態について説明する。なお、本実施形態に係るＬＥＤバルブユニット１０Ａの外観構成は、上述した第１実施形態に係るＬＥＤバルブユニット１０と同様であるため、図１から図３に示す外観構成図を援用するものとする。 [Second embodiment]
Next, a second embodiment of the vehicle LED bulb unit of the present invention will be described with reference to the block diagram shown in FIG. Since the external configuration of the LED bulb unit 10A according to the present embodiment is the same as that of the LED bulb unit 10 according to the above-described first embodiment, the external configuration diagrams shown in FIGS. 1 to 3 are used. .
　本実施形態に係るＬＥＤバルブユニット１０Ａは、ＬＥＤチップＨｉ２２ｂとＬＥＤチップＳｕｂ２２ｃとに対する電流供給量を同時かつ独立に制御可能な構成としたことを特徴とする。具体的には、第１実施形態では、ＬＥＤ駆動回路３４ｂとＬＥＤチップＨｉ２２ｂ、ＬＥＤチップＳｕｂ２２ｃとの間に切替部３６を配置し、ＬＥＤチップＨｉ２２ｂとＬＥＤチップ２２ｃの点灯制御を選択的なものとしていた。 ＬＥＤ The LED bulb unit 10A according to the present embodiment is characterized in that the current supply amounts to the LED chip Hi22b and the LED chip Sub22c can be controlled simultaneously and independently. Specifically, in the first embodiment, the switching unit 36 is disposed between the LED drive circuit 34b and the LED chips Hi22b and Sub22c, and the lighting control of the LED chips Hi22b and the LED chips 22c is selectively performed. Was.
　これに対して本実施形態では、ＬＥＤチップＨｉ２２ｂとＬＥＤチップＳｕｂ２２ｃに対して、それぞれＬＥＤ駆動回路３４ｂ，３４ｃを接続する構成とした。このような構成とすることで、ＬＥＤチップＨｉ２２ｂとＬＥＤチップＳｕｂ２２ｃは、それぞれ選択的に点灯させることはもちろん、同時に点灯させ、かつ供給する電流値の制御による輝度の調整を行うことも可能となる。 On the other hand, in the present embodiment, the LED driving circuits 34b and 34c are connected to the LED chip Hi22b and the LED chip Sub22c, respectively. With such a configuration, the LED chip Hi22b and the LED chip Sub22c can be selectively turned on, of course, simultaneously turned on, and the brightness can be adjusted by controlling the supplied current value. .
［作用、効果］
　よって、ハイビーム領域を主体として照らす場合であっても、例えばＬＥＤチップＨｉ２２ｂに対する電流割合が７７％、ＬＥＤチップＬｏ２２ａに対する電流割合が１９％とした上で、ＬＥＤチップＳｕｂ２２ｃに対する電流割合を７７％とし、ハイビーム領域を明るく照らしつつ、フォグ領域も明るく照らし、車両走行時の安全性を高めることも可能となる。また、このような照射形態を採る場合であっても、各ＬＥＤチップに対する電流値の調整（電流割合の制御）を行うことにより、ＬＥＤバルブ１２としての総発熱量を抑制することができる。 [Action, effect]
Therefore, even when illuminating mainly the high beam region, for example, the current ratio to the LED chip Hi22b is 77%, the current ratio to the LED chip Lo22a is 19%, and the current ratio to the LED chip Sub22c is 77%. While illuminating the high beam area brightly, the fog area is also brightly illuminated, so that it is possible to enhance the safety when the vehicle is running. In addition, even when such an irradiation mode is adopted, the total heat value of the LED bulb 12 can be suppressed by adjusting the current value (control of the current ratio) for each LED chip.
［応用形態］
　上記実施形態では、いずれも、ハイビーム領域、ロービーム領域、およびフォグ領域として、ＬＥＤチップ２２の配置領域を定めていた。しかしながら、これらのＬＥＤチップ２２の配置領域は、ライトユニットにおけるリフレクタとの関係によって変化する場合があり、厳密に定められるものではない。また、本発明に係るＬＥＤバルブユニット１０，
１０Ａは、例えば、メインの照射領域と、その周囲を照らすサブ領域といったように、照射領域の数を２つとしたり、４つ以上とすることもできる。 [Application]
In the above embodiment, the arrangement area of the LED chip 22 is defined as the high beam area, the low beam area, and the fog area. However, the arrangement area of these LED chips 22 may change depending on the relationship with the reflector in the light unit, and is not strictly determined. Further, the LED bulb unit 10 according to the present invention,
For example, the number of irradiation areas of 10A can be two or four or more, such as a main irradiation area and a sub-area that illuminates the surrounding area.
　さらに、ＬＥＤ駆動回路の数を増やし、各照射領域の中でより詳細に電流値の調整をできるようにしても良い。この場合には、各領域に配置するＬＥＤチップ２２として、白色ＬＥＤと淡黄色ＬＥＤとを混在させ、天候や道路状況に応じて前照灯の色味を変化させることができるようにしても良い。また、発光させるＬＥＤチップ２２の選択により、光軸の調整を行うようにすることもできる。 Furthermore, the number of LED drive circuits may be increased so that the current value can be adjusted in more detail in each irradiation area. In this case, a white LED and a pale yellow LED may be mixed as the LED chips 22 arranged in each area so that the color of the headlight can be changed according to the weather or road conditions. . The optical axis can be adjusted by selecting the LED chip 22 to emit light.
　また、上記実施形態では、ＬＥＤチップＳｕｂ２２ｃを発光させるための駆動信号の出力について、ＶｉｎＬと全消灯状態を交互に連続して複数回入力することで成される旨記載した。しかしながら当然に、制御手段２６に対して、別途コントローラを接続し、ＬＥＤチップＳｕｂ２２ｃを発光させるための駆動信号を入力するようにしても良い。また、この信号については、手動以外の手法、例えば車両からの速度情報をプロセッサ３２に入力し、走行速度に応じて自動で切替発光させるようにしても良い。 In addition, in the above-described embodiment, it has been described that the output of the drive signal for causing the LED chip Sub22c to emit light is performed by alternately and continuously inputting VinL and the all-light-off state a plurality of times. However, as a matter of course, a controller may be separately connected to the control means 26, and a drive signal for causing the LED chip Sub22c to emit light may be input. In addition, as for this signal, a method other than manual operation, for example, speed information from a vehicle may be input to the processor 32, and switching light emission may be automatically performed according to the traveling speed.
　また、速度情報以外にも、前走車や対向車の灯火に基づく照度情報や、カーブ等における舵角情報、および車間情報等のうちの少なくとも１つの情報をプロセッサ３２に入力することで、電流を供給するＬＥＤチップ２２の選択、および電流値の制御等を行うようにしても良い。 In addition to the speed information, the processor 32 inputs at least one of illuminance information based on lights of a preceding vehicle or an oncoming vehicle, steering angle information on a curve or the like, and inter-vehicle information. May be selected, and the current value may be controlled.
１０，１０Ａ………ＬＥＤバルブユニット、１２………ＬＥＤバルブ、１４………口金、１６………バルブ本体、１８………バルブ放熱部、１８ａ………接続端子、２０………基板、２２………ＬＥＤチップ、２２ａ………ＬＥＤチップＬｏ、２２ｂ………ＬＥＤチップＨｉ、２２ｃ………ＬＥＤチップＳｕｂ、２４………リフレクタ、２６………制御手段、２８………ブリッジ、３０………電源制御回路、３２………プロセッサ、３４ａ，３４ｂ，３４ｃ………ＬＥＤ駆動回路、３６………切替部。 10, 10A ... LED bulb unit, 12 ... LED bulb, 14 ... base, 16 ... valve body, 18 ... bulb heat radiation part, 18a ... connection terminal, 20 ... board , 22 ... LED chip, 22a ... LED chip Lo, 22b ... LED chip Hi, 22c ... LED chip Sub, 24 ... reflector, 26 ... control means, 28 ... bridge , 30... Power supply control circuit, 32... Processor, 34a, 34b, 34c... LED drive circuit, 36.

Claims (5)

  1. 　基板に複数のＬＥＤチップを備えた車両用ＬＥＤバルブと、前記ＬＥＤバルブの発光を制御する制御手段とを備えた車両用ＬＥＤバルブユニットであって、
    　各ＬＥＤチップにはそれぞれ、対応する照射領域が定められ、
    　前記制御手段は、照射領域の数と、他の照射領域よりも高い輝度を必要とする照射領域、および総発熱量に基づいて、電流を供給するＬＥＤチップに対する電流値の増減を図ることを特徴とする車両用ＬＥＤバルブユニット。     A vehicle LED bulb including a vehicle LED bulb having a plurality of LED chips on a substrate, and control means for controlling light emission of the LED bulb,
    Each LED chip has a corresponding irradiation area,
    The control unit is configured to increase or decrease the current value for the LED chip that supplies the current based on the number of irradiation areas, the irradiation area requiring higher luminance than other irradiation areas, and the total heat generation amount. LED bulb unit for vehicles.
  2. 　前記照射領域は、少なくともハイビーム領域とロービーム領域、および少なくともいずれか一方の領域と照射範囲の一部が重なるサブビーム領域が定められていることを特徴とする請求項１に記載の車両用ＬＥＤバルブユニット。 The LED bulb unit for a vehicle according to claim 1, wherein the irradiation area defines at least a high beam area and a low beam area, and a sub-beam area where at least one of the areas and a part of the irradiation area overlaps. .
  3. 　前記制御手段は、車両からの速度情報、照度情報、舵角情報、及び車間情報の少なくとも１つの情報に基づいて、前記電流を供給する前記ＬＥＤチップの選択、及び前記電流値の増減並びに調整を行うことを特徴とする請求項１または２に記載の車両用ＬＥＤバルブユニット。 The control means selects the LED chip that supplies the current, and increases or decreases and adjusts the current value based on at least one of speed information, illuminance information, steering angle information, and inter-vehicle information from the vehicle. The vehicle LED bulb unit according to claim 1 or 2, wherein the operation is performed.
  4. 　前記制御手段は、車両における前照灯のローと全消灯状態との切替により入力される電圧パターンの変化に基づいて、電流を供給する前記ＬＥＤチップの選択、及び電流値の増減並びに調整を行うことを特徴とする請求項１または２に記載の車両用ＬＥＤバルブユニット。 The control means selects the LED chip for supplying current, and increases / decreases and adjusts a current value based on a change in a voltage pattern input by switching between a low state and a completely extinguished state of the headlight in the vehicle. The vehicle LED bulb unit according to claim 1 or 2, wherein:
  5. 　前記制御手段には、任意のＬＥＤチップに対する電流値の供給切替を可能なコントローラを接続したことを特徴とする請求項１乃至４のいずれか１項に記載の車両用ＬＥＤバルブユニット。 The vehicle LED bulb unit according to any one of claims 1 to 4, wherein the controller is connected to a controller capable of switching supply of a current value to an arbitrary LED chip.
PCT/JP2019/033559 2018-09-28 2019-08-27 Vehicle led bulb unit WO2020066427A1 (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007213877A (en) * 2006-02-08 2007-08-23 Koito Mfg Co Ltd Vehicular headlamp
JP2008013014A (en) * 2006-07-05 2008-01-24 Koito Mfg Co Ltd Vehicular headlanp
JP2009134933A (en) * 2007-11-29 2009-06-18 Mitsubishi Electric Corp Led lighting device, and headlight for vehicle
JP2012183863A (en) * 2011-03-03 2012-09-27 Stanley Electric Co Ltd Lighting system for vehicle
JP2016210234A (en) * 2015-04-30 2016-12-15 株式会社小糸製作所 Lighting circuit and vehicular lighting fixture
JP2017021968A (en) * 2015-07-09 2017-01-26 パナソニックＩｐマネジメント株式会社 Lighting device, luminaire for vehicle and vehicle using the same
JP2018049734A (en) * 2016-09-21 2018-03-29 株式会社カーメイト LED lamp

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007213877A (en) * 2006-02-08 2007-08-23 Koito Mfg Co Ltd Vehicular headlamp
JP2008013014A (en) * 2006-07-05 2008-01-24 Koito Mfg Co Ltd Vehicular headlanp
JP2009134933A (en) * 2007-11-29 2009-06-18 Mitsubishi Electric Corp Led lighting device, and headlight for vehicle
JP2012183863A (en) * 2011-03-03 2012-09-27 Stanley Electric Co Ltd Lighting system for vehicle
JP2016210234A (en) * 2015-04-30 2016-12-15 株式会社小糸製作所 Lighting circuit and vehicular lighting fixture
JP2017021968A (en) * 2015-07-09 2017-01-26 パナソニックＩｐマネジメント株式会社 Lighting device, luminaire for vehicle and vehicle using the same
JP2018049734A (en) * 2016-09-21 2018-03-29 株式会社カーメイト LED lamp

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