WO2016175032A1 - Headup display device and method for assembling headup display device - Google Patents

Headup display device and method for assembling headup display device Download PDF

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Publication number
WO2016175032A1
WO2016175032A1 PCT/JP2016/061964 JP2016061964W WO2016175032A1 WO 2016175032 A1 WO2016175032 A1 WO 2016175032A1 JP 2016061964 W JP2016061964 W JP 2016061964W WO 2016175032 A1 WO2016175032 A1 WO 2016175032A1
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Prior art keywords
unit
display
light
display device
reflecting mirror
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PCT/JP2016/061964
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French (fr)
Japanese (ja)
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洋平 佐藤
幸夫 小笠原
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日本精機株式会社
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Arrangement of adaptations of instruments
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/64—Constructional details of receivers, e.g. cabinets or dust covers

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  • the present invention relates to a head-up display device that suppresses deterioration of display quality due to an assembly error and an assembly method of the head-up display device.
  • a conventional head-up display device (also referred to as a HUD device) is disclosed in Patent Document 1.
  • the HUD device reflects display light emitted from the display means to a reflecting mirror, and receives the display light reflected by the reflecting mirror by a combiner to display a virtual image.
  • the display means is fixed to a substantially cylindrical middle case in which an emission port is formed, and this middle case is fixed to the lower case.
  • the reflecting mirror is fixed to the lower case.
  • the combiner is fixed to the upper case, and the upper case is fixed to the lower case.
  • the display means, the reflecting mirror, and the combiner are positioned by combining the upper case, the lower case, and the middle case to which they are fixed.
  • the present invention has been made in view of the above-described circumstances, and an object thereof is to provide a head-up display device with good display quality by suppressing an assembly error.
  • the head-up display device includes: A display unit that emits display light; A reflecting mirror for reflecting the display light; A combiner unit on which the display light reflected by the reflecting mirror is projected; A reference support on which the display unit, the reflecting mirror, and the combiner unit are positioned and attached; A housing that houses the reference support;
  • the head-up display device having the first feature is as follows: A drive unit for driving the combiner unit; A second feature is that the drive unit is positioned and attached to the reference support.
  • the head-up display device having the first feature or the second feature is: Comprising light detection means,
  • the reference support has a cylindrical hole;
  • a third feature is that the light detection means is positioned and attached to the reference support so that light incident from the cylindrical hole enters the light detection means.
  • the method for assembling the head-up display device includes: A unit in which a display unit that emits display light, a reflecting mirror that reflects the display light, and a combiner unit that projects the display light reflected by the reflecting mirror are positioned and attached to a reference support body.
  • the fourth feature is accommodation.
  • an assembly method of the head-up display device according to the present invention having the fourth feature is as follows: According to a fifth aspect of the present invention, after the drive unit that drives the combiner unit is positioned and attached to the reference support, the unit is accommodated in the housing.
  • an assembling method of the head-up display device according to the present invention having the fourth feature or the fifth feature is as follows:
  • a sixth feature is that the unit is accommodated in the housing after the light detection means is positioned and attached to the reference support.
  • the schematic perspective view which shows the structure of the HUD apparatus which concerns on one Embodiment of this invention The perspective view which shows the structure of the unit of the HUD apparatus which concerns on the same embodiment.
  • the head-up display device A includes a unit 1 and a housing 2 that houses the unit 1.
  • the unit 1 includes a display unit 11, a reflecting mirror 12, a combiner unit 13, a drive unit 14, a light detection board 15, and a control board 16 on a reference support 10 that is an assembly reference. And assembled.
  • the housing 2 includes a lower case 20 and an upper case 21 made of an impermeable synthetic resin such as polycarbonate (PC) or polypropylene (PP), and the upper case 21 has an opening 21a.
  • PC polycarbonate
  • PP polypropylene
  • the reference support 10 is made of an impermeable synthetic resin such as PC or PP. As shown in FIG. 3, the reference support 10 includes a first placement part 101 on which a reflecting mirror 12 is placed and a second placement part 102 a on which a display unit 11 is placed on a base material 100.
  • a cylindrical light guide tube portion 102 extending to the portion 101, third placement portions 103 a and 103 b in which the combiner unit 13 is placed, fourth placement portions 104 a and 104 b in which the drive unit 14 is placed, and the light detection substrate 15. are arranged, and a cylindrical light guide tube portion 105 a that guides external light to the light detection substrate 15 arranged in the fifth placement portion 105 is formed.
  • the display unit 11 is, for example, a light source substrate on which a light source element such as an LED is mounted, an optical member composed of a lens or a diffusion plate for making the illuminance distribution of light emitted from the light source substrate uniform, and the optical member.
  • the liquid crystal panel illuminated by the light from the light source substrate, the radiator that dissipates the heat generated by the LEDs mounted on the light source substrate, and the case body that accommodates these members, the vehicle traveling speed, etc.
  • the display light La representing the vehicle information is emitted.
  • the display unit 11 is positioned on the second placement portion 102 a of the reference support 10 and fixed with screws, and the display light La enters the light guide tube portion 102 toward the first placement portion 101.
  • the reflecting mirror 12 is composed of a plane mirror, for example.
  • the reflecting mirror 12 is positioned on the first placement portion 101 of the reference support 10 and fixed with an adhesive tape or the like.
  • the reflecting mirror 12 fixed to the first arrangement unit 101 reflects the display light La emitted from the display unit 11 fixed to the second arrangement unit 102a as display light Lb.
  • the combiner unit 13 includes a combiner 130, a holder 131 that supports the lower end of the combiner 130, shafts 132 and 133 that are fixed to the holder 131 and serve as a rotation axis of the combiner unit 13, and an input gear 134 through which the shaft 132 is inserted. And consist of In the combiner unit 13, the shaft 132 is disposed on the third placement portion 103 a of the reference support 10, the shaft 133 is disposed on the third placement portion 103 b, and the reference support 10 can be rotated about the shafts 132 and 133. Placed in.
  • the display unit 11, the reflecting mirror 12, and the combiner unit 13 are arranged on the reference support 10, the display light La emitted from the display unit 11 is reflected from the light guide tube portion 102 to the reflecting mirror as shown in FIG. 4.
  • the reflecting mirror 12 reflects the display light La as display light Lb toward the combiner unit 13, and the combiner unit 13 reflects the display light Lc toward the viewer who is behind the display light Lb.
  • the viewer visually recognizes the virtual image V forward through the combiner unit 13. Since the positional relationship among the display unit 11, the reflecting mirror 12, and the combiner unit 13 is positioned by the reference support 10, there is little assembling error.
  • the drive unit 14 includes a motor 140, a worm gear 141, a reduction gear 142, an output gear 143, and a case body 144 that accommodates these.
  • the case body 144 is positioned and screwed to the fourth arrangement portions 104 a and 104 b of the reference support 10.
  • the motor 140 is composed of a stepping motor or the like, and rotates under the control of the control board 16 described later.
  • One of the worm gears 141 is fixed to the rotation shaft of the motor 140, and the other meshes with the reduction gear 142, and the rotation of the motor 140 is transmitted to the reduction gear 142.
  • the reduction gear 142 increases the torque transmitted from the worm gear 141 in proportion to the reduction ratio and outputs it to the output gear 143.
  • the output gear 143 meshes with the input gear 134 of the combiner unit 13 and transmits torque from the reduction gear 142.
  • the light detection board 15 is composed of a circuit board on which a light sensor for detecting the brightness of light is mounted.
  • the light detection substrate 15 is positioned and screwed to the fifth placement portion 105 so that external light guided by the light guide tube portion 105a of the reference support 10 enters the optical sensor. Since the positional relationship among the display unit 11, the reflecting mirror 12, the combiner unit 13, and the light detection board 15 is positioned by the reference support 10, these positional relations have little assembling errors and external light detected by the light detection board 15. Can be appropriately captured in accordance with the position of the virtual image V on which the combiner unit 13 is displayed.
  • the control board 16 includes a circuit board on which a microcontroller on which a CPU, a memory for storing a program operated by the CPU, a timer, and an input / output unit for communicating with an external peripheral device are integrated is mounted. .
  • the control board 16 is screwed to the reference support 10.
  • the control board 16 is a control means for controlling the entire HUD device, and displays an image representing vehicle information obtained from an in-vehicle network (not shown) on the liquid crystal panel, according to the intensity of external light detected by the light detection board 15.
  • the intensity of light emitted from the light source substrate of the display unit 11 is adjusted. Thereby, the display unit 11 emits display light La representing vehicle information such as the traveling speed of the vehicle.
  • the control board 16 rotates the motor 140 of the drive unit 14 to adjust the arrangement angle of the combiner unit 13.
  • a unit 1 configured by assembling a display unit 11, a reflecting mirror 12, a combiner unit 13, a drive unit 14, a light detection board 15 and a control board 16 with the reference support 10 as a reference,
  • the lower case 20 is screwed.
  • the lower case 20 supporting the unit 1 is fitted into the upper case 21 so that the unit 1 is accommodated in the housing 2 and becomes the HUD device A.
  • the upper case 21 is fitted with the lower case 20 so that the combiner 130 protrudes from the opening 21 a so as not to block the optical path (the optical path through which the display light Lb passes) reaching the reflecting mirror 12 and the combiner unit 13.
  • the unit 1 covers the circuit board and the mechanism part such as the light detection board 15, the control board 16, and the drive unit 14 so as not to be seen by the viewer without blocking the optical path for displaying the virtual image V.
  • the HUD device A described above includes a display unit 11 that emits display light La, a reflecting mirror 12 that reflects the display light La, a combiner unit 13 that projects display light Lb reflected by the reflecting mirror 12, and a display unit. 11, the reflecting mirror 12, and the combiner unit 13 are positioned and attached, and the housing 2 that houses the reference support 10 is provided. With this configuration, since the positional relationship among the display unit 11, the reflecting mirror 12, and the combiner unit 13 is positioned by the reference support 10, a head-up display with excellent display quality while suppressing assembly errors. Equipment can be provided.
  • the HUD device A includes a display unit 11 that emits display light La, a reflecting mirror 12 that reflects the display light La, and a combiner unit 13 that projects the display light Lb reflected by the reflecting mirror 12.
  • the unit 1 that is positioned and attached to 10 is manufactured by an assembling method in which the unit 1 is accommodated in the housing 2. By assembling in this way, it is possible to suppress deterioration in display quality due to an assembling error, and the reference support body 10 can be compared with the case where the display unit 11, the reflecting mirror 12, and the combiner unit 13 are assembled to the housing 2 inside the housing 2. Since it can be assembled to the center from the outside, it is easy to assemble.
  • the head-up display device that is an embodiment of the present invention has been described above.
  • the present invention is not limited to the above-described embodiment, and modifications (including deletion of components) can be added to the embodiment and the drawings without departing from the gist of the present invention.
  • the present invention is suitable for a head-up display device mounted on a vehicle.

Abstract

To provide a headup display device having excellent display qualities by suppressing an assembly error. A headup display device A of the present invention is provided with: a display unit 11 that emits display light La; a reflecting mirror 12 that reflects the display light La; a combiner unit 13 to which display light Lb reflected by the reflecting mirror 12 is projected; a reference supporting body 10 to which the display unit 11, the reflecting mirror 12, and the combiner unit 13 are attached by being aligned with the reference supporting body; and a housing 2 that houses the reference supporting body 10. Since the positional relationships among the display unit 11, the reflecting mirror 12, and the combiner unit 13 are determined by means of the reference supporting body 10, the headup display device having excellent display qualities by suppressing an assembly error can be provided.

Description

ヘッドアップディスプレイ装置及びそのヘッドアップディスプレイ装置の組付け方法Head-up display device and method for assembling the head-up display device
　本発明は、組み付け誤差による表示品位の低下を抑制するヘッドアップディスプレイ装置及びそのヘッドアップディスプレイ装置の組付け方法に関する。 The present invention relates to a head-up display device that suppresses deterioration of display quality due to an assembly error and an assembly method of the head-up display device.
　従来のヘッドアップディスプレイ装置（ＨＵＤ装置とも言う）として、特許文献１に開示されるものがある。このＨＵＤ装置は、表示手段が発した表示光を反射鏡に反射させ、この反射鏡が反射した表示光をコンバイナで受けて虚像を表示する。表示手段は出射口が形成された略筒状の中ケースに固定され、この中ケースは下ケースに固定されている。反射鏡は下ケースに固定されている。コンバイナは上ケースに固定され、この上ケースは下ケースに固定する。表示手段と、反射鏡と、コンバイナと、は、これらが固定された上ケースと下ケースと中ケースとが組み合わさることにより、位置決めされている。 A conventional head-up display device (also referred to as a HUD device) is disclosed in Patent Document 1. The HUD device reflects display light emitted from the display means to a reflecting mirror, and receives the display light reflected by the reflecting mirror by a combiner to display a virtual image. The display means is fixed to a substantially cylindrical middle case in which an emission port is formed, and this middle case is fixed to the lower case. The reflecting mirror is fixed to the lower case. The combiner is fixed to the upper case, and the upper case is fixed to the lower case. The display means, the reflecting mirror, and the combiner are positioned by combining the upper case, the lower case, and the middle case to which they are fixed.
特開２０１３－１７７０９２号公報JP 2013-177092 A
　上述した特許文献１に開示されるＨＵＤ装置においては、表示手段と反射鏡とコンバイナとが、それぞれ異なるケースに固定された後、個々のケースが組み合わさることにより、表示手段と反射鏡とコンバイナとの位置決めされるため、組み付け誤差により表示する虚像の表示品位の低下を招く虞があった。 In the HUD device disclosed in Patent Document 1 described above, after the display unit, the reflecting mirror, and the combiner are fixed to different cases, the display unit, the reflecting mirror, and the combiner are combined by combining the individual cases. Therefore, there is a possibility that the display quality of a virtual image to be displayed is deteriorated due to an assembly error.
　本発明は上述した実情に鑑みてなされ、組み付け誤差を抑制して表示品位の良好なヘッドアップディスプレイ装置を提供することを目的とする。 The present invention has been made in view of the above-described circumstances, and an object thereof is to provide a head-up display device with good display quality by suppressing an assembly error.
　本発明に係るヘッドアップディスプレイ装置は、
　表示光を発する表示ユニットと、
　前記表示光を反射する反射鏡と、
　前記反射鏡が反射した表示光が投射されるコンバイナユニットと、
　前記表示ユニットと前記反射鏡と前記コンバイナユニットとが位置決めされて取り付けられる基準支持体と、
　前記基準支持体を収容するハウジングと、
　を備えたことを第１の特徴とする。 The head-up display device according to the present invention includes:
A display unit that emits display light;
A reflecting mirror for reflecting the display light;
A combiner unit on which the display light reflected by the reflecting mirror is projected;
A reference support on which the display unit, the reflecting mirror, and the combiner unit are positioned and attached;
A housing that houses the reference support;
The first feature is that
　また、第１の特徴を備えた本発明に係るヘッドアップディスプレイ装置は、
　前記コンバイナユニットを駆動する駆動ユニットを備え、
　前記駆動ユニットは前記基準支持体に位置決めされて取り付けられる
　ことを第２の特徴とする。 Moreover, the head-up display device according to the present invention having the first feature is as follows:
A drive unit for driving the combiner unit;
A second feature is that the drive unit is positioned and attached to the reference support.
　また、第１の特徴または第２の特徴を備えた本発明に係るヘッドアップディスプレイ装置は、
　光検出手段を備え、
　前記基準支持体は筒状孔を有し、
　前記筒状孔から入光した光が前記光検出手段に入光するように、前記光検出手段は前記基準支持体に位置決めされて取り付けられる
　ことを第３の特徴とする。 The head-up display device according to the present invention having the first feature or the second feature is:
Comprising light detection means,
The reference support has a cylindrical hole;
A third feature is that the light detection means is positioned and attached to the reference support so that light incident from the cylindrical hole enters the light detection means.
　また、本発明に係るヘッドアップディスプレイ装置の組付け方法は、
　表示光を発する表示ユニットと、前記表示光を反射する反射鏡と、前記反射鏡が反射した表示光が投射されるコンバイナユニットと、を基準支持体に位置決めして取付けてなるユニットを、ハウジングに収容する
　ことを第４の特徴とする。 In addition, the method for assembling the head-up display device according to the present invention includes:
A unit in which a display unit that emits display light, a reflecting mirror that reflects the display light, and a combiner unit that projects the display light reflected by the reflecting mirror are positioned and attached to a reference support body. The fourth feature is accommodation.
　また、第４の特徴を備えた本発明に係るヘッドアップディスプレイ装置の組付け方法は、
　前記基準支持体に前記コンバイナユニットを駆動する駆動ユニットを位置決めして取り付けた後に、前記ユニットを前記ハウジングに収容する
　ことを第５の特徴とする。 Moreover, an assembly method of the head-up display device according to the present invention having the fourth feature is as follows:
According to a fifth aspect of the present invention, after the drive unit that drives the combiner unit is positioned and attached to the reference support, the unit is accommodated in the housing.
　また、第４の特徴または第５の特徴を備えた本発明に係るヘッドアップディスプレイ装置の組付け方法は、
　前記基準支持体に光検出手段を位置決めして取り付けた後に、前記ユニットを前記ハウジングに収容する
　ことを第６の特徴とする。 In addition, an assembling method of the head-up display device according to the present invention having the fourth feature or the fifth feature is as follows:
A sixth feature is that the unit is accommodated in the housing after the light detection means is positioned and attached to the reference support.
　本発明によれば、組み付け誤差を抑制して表示品位の良好なヘッドアップディスプレイ装置を提供できる。 According to the present invention, it is possible to provide a head-up display device with good display quality while suppressing assembly errors.
本発明の一実施形態に係るＨＵＤ装置の構成を示す概略斜視図。The schematic perspective view which shows the structure of the HUD apparatus which concerns on one Embodiment of this invention. 同実施形態に係るＨＵＤ装置のユニットの構成を示す斜視図。The perspective view which shows the structure of the unit of the HUD apparatus which concerns on the same embodiment. 同ユニットの基準支持体を示す斜視図。The perspective view which shows the reference | standard support body of the unit. 同ユニットが表示する虚像の光路を示す斜視図。The perspective view which shows the optical path of the virtual image which the unit displays. 同ユニットのコンバイナユニットと駆動ユニットとの係合を示す図。The figure which shows engagement with the combiner unit and drive unit of the unit.
　本発明を適用した一実施形態であるＨＵＤ装置Ａを図面を参照して説明する。
　ヘッドアップディスプレイ装置Ａは、図１に示すように、ユニット１とこのユニット１を収容するハウジング２からなる。 A HUD device A which is an embodiment to which the present invention is applied will be described with reference to the drawings.
As shown in FIG. 1, the head-up display device A includes a unit 1 and a housing 2 that houses the unit 1.
　ユニット１は、図２に示すように、組み付け基準となる基準支持体１０に、表示ユニット１１と、反射鏡１２と、コンバイナユニット１３と、駆動ユニット１４と、光検出基板１５と、制御基板１６と、が組み付けられて構成される。 As shown in FIG. 2, the unit 1 includes a display unit 11, a reflecting mirror 12, a combiner unit 13, a drive unit 14, a light detection board 15, and a control board 16 on a reference support 10 that is an assembly reference. And assembled.
　ハウジング２は、ポリカーボネート（ＰＣ）やポリプロピレン（ＰＰ）などの不透過な合成樹脂からなる下ケース２０と上ケース２１とからなり、上ケース２１には開口２１ａが形成されている。このハウジング２へのユニット１の収容手順については、後に詳述する。 The housing 2 includes a lower case 20 and an upper case 21 made of an impermeable synthetic resin such as polycarbonate (PC) or polypropylene (PP), and the upper case 21 has an opening 21a. The procedure for housing the unit 1 in the housing 2 will be described in detail later.
　基準支持体１０は、ＰＣやＰＰなどの不透過な合成樹脂からなる。基準支持体１０は、図３に示すように、基材１００に、反射鏡１２が配置される第１配置部１０１と、表示ユニット１１が配置される第２配置部１０２ａを有し第１配置部１０１に延びる筒状の導光筒部１０２と、コンバイナユニット１３が配置される第３配置部１０３ａ，１０３ｂと、駆動ユニット１４が配置される第４配置部１０４ａ，１０４ｂと、光検出基板１５が配置される第５配置部１０５と、第５配置部１０５に配置された光検出基板１５に外光を導く筒状の導光筒部１０５ａと、が形成されている。 The reference support 10 is made of an impermeable synthetic resin such as PC or PP. As shown in FIG. 3, the reference support 10 includes a first placement part 101 on which a reflecting mirror 12 is placed and a second placement part 102 a on which a display unit 11 is placed on a base material 100. A cylindrical light guide tube portion 102 extending to the portion 101, third placement portions 103 a and 103 b in which the combiner unit 13 is placed, fourth placement portions 104 a and 104 b in which the drive unit 14 is placed, and the light detection substrate 15. Are arranged, and a cylindrical light guide tube portion 105 a that guides external light to the light detection substrate 15 arranged in the fifth placement portion 105 is formed.
　表示ユニット１１は、例えば、ＬＥＤなどの光源素子が実装された光源基板と、光源基板が発した光の照度の分布を均一にするためのレンズや拡散板からなる光学部材と、光学部材を通過した光源基板からの光によって照明される液晶パネルと、光源基板に実装されたＬＥＤが発した熱を放散させる放熱器と、これらの部材を収容するケース体と、からなり、車両の走行速度などの車両情報を表す表示光Ｌａを発する。表示ユニット１１は、基準支持体１０の第２配置部１０２ａに位置決めされて螺子で固定され、第１配置部１０１に向けて表示光Ｌａを導光筒部１０２に入射する。 The display unit 11 is, for example, a light source substrate on which a light source element such as an LED is mounted, an optical member composed of a lens or a diffusion plate for making the illuminance distribution of light emitted from the light source substrate uniform, and the optical member. The liquid crystal panel illuminated by the light from the light source substrate, the radiator that dissipates the heat generated by the LEDs mounted on the light source substrate, and the case body that accommodates these members, the vehicle traveling speed, etc. The display light La representing the vehicle information is emitted. The display unit 11 is positioned on the second placement portion 102 a of the reference support 10 and fixed with screws, and the display light La enters the light guide tube portion 102 toward the first placement portion 101.
　反射鏡１２は、例えば、平面鏡からなる。反射鏡１２は、基準支持体１０の第１配置部１０１に位置決めされ、粘着テープ等により固定される。第１配置部１０１に固定された反射鏡１２は、第２配置部１０２ａに固定された表示ユニット１１が発した表示光Ｌａを表示光Ｌｂとして反射する。 The reflecting mirror 12 is composed of a plane mirror, for example. The reflecting mirror 12 is positioned on the first placement portion 101 of the reference support 10 and fixed with an adhesive tape or the like. The reflecting mirror 12 fixed to the first arrangement unit 101 reflects the display light La emitted from the display unit 11 fixed to the second arrangement unit 102a as display light Lb.
　コンバイナユニット１３は、コンバイナ１３０と、コンバイナ１３０の下端部を支持するホルダ１３１と、このホルダ１３１に固定されコンバイナユニット１３の回転軸となる軸１３２，１３３と、軸１３２が挿通された入力ギア１３４と、からなる。コンバイナユニット１３は、基準支持体１０の第３配置部１０３ａに軸１３２が配置され、第３配置部１０３ｂに軸１３３が配置されて、軸１３２，１３３を中心に回動可能に基準支持体１０に配置される。 The combiner unit 13 includes a combiner 130, a holder 131 that supports the lower end of the combiner 130, shafts 132 and 133 that are fixed to the holder 131 and serve as a rotation axis of the combiner unit 13, and an input gear 134 through which the shaft 132 is inserted. And consist of In the combiner unit 13, the shaft 132 is disposed on the third placement portion 103 a of the reference support 10, the shaft 133 is disposed on the third placement portion 103 b, and the reference support 10 can be rotated about the shafts 132 and 133. Placed in.
　基準支持体１０に、表示ユニット１１と、反射鏡１２と、コンバイナユニット１３が配置されると、図４に示すように、表示ユニット１１が発した表示光Ｌａが導光筒部１０２から反射鏡１２に向けて出射し、反射鏡１２はコンバイナユニット１３に向けて表示光Ｌａを表示光Ｌｂとして反射し、コンバイナユニット１３は表示光Ｌｂを後方にいる視認者に向けて表示光Ｌｃを反射することで、視認者はコンバイナユニット１３を介して前方に虚像Ｖを視認する。表示ユニット１１と反射鏡１２とコンバイナユニット１３と、の位置関係は基準支持体１０によって位置決めされるため、組付け誤差が少ない。 When the display unit 11, the reflecting mirror 12, and the combiner unit 13 are arranged on the reference support 10, the display light La emitted from the display unit 11 is reflected from the light guide tube portion 102 to the reflecting mirror as shown in FIG. 4. The reflecting mirror 12 reflects the display light La as display light Lb toward the combiner unit 13, and the combiner unit 13 reflects the display light Lc toward the viewer who is behind the display light Lb. Thus, the viewer visually recognizes the virtual image V forward through the combiner unit 13. Since the positional relationship among the display unit 11, the reflecting mirror 12, and the combiner unit 13 is positioned by the reference support 10, there is little assembling error.
　駆動ユニット１４は、モータ１４０と、ウォームギア１４１と、減速ギア１４２と、出力ギア１４３と、これらを収容するケース体１４４と、からなる。駆動ユニット１４は、ケース体１４４が基準支持体１０の第４配置部１０４ａ，１０４ｂに位置決めされて螺子固定される。 The drive unit 14 includes a motor 140, a worm gear 141, a reduction gear 142, an output gear 143, and a case body 144 that accommodates these. In the drive unit 14, the case body 144 is positioned and screwed to the fourth arrangement portions 104 a and 104 b of the reference support 10.
　モータ１４０は、ステッピングモータなどからなり、後述する制御基板１６に制御されて回動する。ウォームギア１４１は一方がモータ１４０の回転軸に固定され、他方が減速ギア１４２と噛み合い、モータ１４０の回転を減速ギア１４２に伝達する。減速ギア１４２はウォームギア１４１から伝達されたトルクを減速比に比例して大きくして出力ギア１４３に出力する。出力ギア１４３は、コンバイナユニット１３の入力ギア１３４と噛み合い、減速ギア１４２からのトルクを伝達する。 The motor 140 is composed of a stepping motor or the like, and rotates under the control of the control board 16 described later. One of the worm gears 141 is fixed to the rotation shaft of the motor 140, and the other meshes with the reduction gear 142, and the rotation of the motor 140 is transmitted to the reduction gear 142. The reduction gear 142 increases the torque transmitted from the worm gear 141 in proportion to the reduction ratio and outputs it to the output gear 143. The output gear 143 meshes with the input gear 134 of the combiner unit 13 and transmits torque from the reduction gear 142.
　図５に示すように、基準支持体１０にコンバイナユニット１３と駆動ユニット１４が配置されると、コンバイナユニット１３の入力ギア１３４と駆動ユニット１４の出力ギア１４３とが噛み合う。また、入力ギア１３４にはピン１３４ａが形成され、入力ギア１３４と噛み合う出力ギア１４３にはピン１４３ａが形成されており、これらピン１３４ａとピン１４３ａが弾性部材Ｓによって互いが引き合うように付勢される。これにより、モータ１４０の回転によってコンバイナユニット１３が軸１３２，１３３を軸に枢動する。コンバイナユニット１３と駆動ユニット１４との位置関係は、基準支持体１０によって位置決めされるため、組付け誤差が少ない。 As shown in FIG. 5, when the combiner unit 13 and the drive unit 14 are disposed on the reference support 10, the input gear 134 of the combiner unit 13 and the output gear 143 of the drive unit 14 are engaged with each other. Further, a pin 134a is formed on the input gear 134, and a pin 143a is formed on the output gear 143 that meshes with the input gear 134. These pins 134a and 143a are urged by the elastic member S so as to attract each other. The Thereby, the combiner unit 13 pivots about the shafts 132 and 133 by the rotation of the motor 140. Since the positional relationship between the combiner unit 13 and the drive unit 14 is determined by the reference support 10, there is little assembling error.
　光検出基板１５は、光の明るさを検出する光センサが実装された回路基板からなる。光検出基板１５は、基準支持体１０の導光筒部１０５ａによって導かれた外光が光センサに入光するように、第５配置部１０５に位置決めされて螺子固定される。表示ユニット１１と反射鏡１２とコンバイナユニット１３と光検出基板１５、の位置関係は基準支持体１０によって位置決めされるため、これらの位置関係は組み付け誤差が少なく、光検出基板１５が検出する外光をコンバイナユニット１３が表示される虚像Ｖの位置に合わせて適切に取り込むことができる。 The light detection board 15 is composed of a circuit board on which a light sensor for detecting the brightness of light is mounted. The light detection substrate 15 is positioned and screwed to the fifth placement portion 105 so that external light guided by the light guide tube portion 105a of the reference support 10 enters the optical sensor. Since the positional relationship among the display unit 11, the reflecting mirror 12, the combiner unit 13, and the light detection board 15 is positioned by the reference support 10, these positional relations have little assembling errors and external light detected by the light detection board 15. Can be appropriately captured in accordance with the position of the virtual image V on which the combiner unit 13 is displayed.
　制御基板１６は、ＣＰＵと、ＣＰＵが動作させるプログラムを格納するメモリと、タイマと、外部周辺機器などと通信するための入出力部と、が集積されたマイクロコントローラが実装された回路基板からなる。制御基板１６は、基準支持体１０に螺子固定される。
　制御基板１６は、ＨＵＤ装置全体の制御を行う制御手段であり、図示しない車内ネットワークから得た車両情報を表す画像を液晶パネルに表示させ、光検出基板１５が検出した外光の強度に応じて表示ユニット１１の光源基板が発する光の強度を調整する。これにより、表示ユニット１１は、車両の走行速度などの車両情報を表す表示光Ｌａを発する。また、制御基板１６は、駆動ユニット１４のモータ１４０を回動して、コンバイナユニット１３の配置角度を調整する。 The control board 16 includes a circuit board on which a microcontroller on which a CPU, a memory for storing a program operated by the CPU, a timer, and an input / output unit for communicating with an external peripheral device are integrated is mounted. . The control board 16 is screwed to the reference support 10.
The control board 16 is a control means for controlling the entire HUD device, and displays an image representing vehicle information obtained from an in-vehicle network (not shown) on the liquid crystal panel, according to the intensity of external light detected by the light detection board 15. The intensity of light emitted from the light source substrate of the display unit 11 is adjusted. Thereby, the display unit 11 emits display light La representing vehicle information such as the traveling speed of the vehicle. Further, the control board 16 rotates the motor 140 of the drive unit 14 to adjust the arrangement angle of the combiner unit 13.
　基準支持体１０を基準に、表示ユニット１１と、反射鏡１２と、コンバイナユニット１３と、駆動ユニット１４と、光検出基板１５と、制御基板１６と、が組み付けられて構成されたユニット１は、まず、下ケース２０に螺子固定される。次に、ユニット１を支持した下ケース２０は、上ケース２１と嵌合することによってユニット１がハウジング２に収容されてＨＵＤ装置Ａとなる。上ケース２１は、反射鏡１２とコンバイナユニット１３に至る光路（表示光Ｌｂが通る光路）を遮らないようにコンバイナ１３０を開口２１ａから突出させて下ケース２０と嵌合する。これにより、ユニット１は、虚像Ｖを表示するための光路を遮らずに、光検出基板１５や制御基板１６、および駆動ユニット１４などの回路基板や機構部分を視認者から見えないように覆う。 A unit 1 configured by assembling a display unit 11, a reflecting mirror 12, a combiner unit 13, a drive unit 14, a light detection board 15 and a control board 16 with the reference support 10 as a reference, First, the lower case 20 is screwed. Next, the lower case 20 supporting the unit 1 is fitted into the upper case 21 so that the unit 1 is accommodated in the housing 2 and becomes the HUD device A. The upper case 21 is fitted with the lower case 20 so that the combiner 130 protrudes from the opening 21 a so as not to block the optical path (the optical path through which the display light Lb passes) reaching the reflecting mirror 12 and the combiner unit 13. Thereby, the unit 1 covers the circuit board and the mechanism part such as the light detection board 15, the control board 16, and the drive unit 14 so as not to be seen by the viewer without blocking the optical path for displaying the virtual image V.
　以上に説明したＨＵＤ装置Ａは、表示光Ｌａを発する表示ユニット１１と、表示光Ｌａを反射する反射鏡１２と、反射鏡１２が反射した表示光Ｌｂが投射されるコンバイナユニット１３と、表示ユニット１１と反射鏡１２とコンバイナユニット１３とが位置決めされて取り付けられる基準支持体１０と、基準支持体１０を収容するハウジング２と、を備えた。
　このように構成することで、表示ユニット１１と反射鏡１２とコンバイナユニット１３とのそれぞれの位置関係は基準支持体１０によって位置決めされるため、組み付け誤差を抑制して表示品位の良好なヘッドアップディスプレイ装置を提供できる。 The HUD device A described above includes a display unit 11 that emits display light La, a reflecting mirror 12 that reflects the display light La, a combiner unit 13 that projects display light Lb reflected by the reflecting mirror 12, and a display unit. 11, the reflecting mirror 12, and the combiner unit 13 are positioned and attached, and the housing 2 that houses the reference support 10 is provided.
With this configuration, since the positional relationship among the display unit 11, the reflecting mirror 12, and the combiner unit 13 is positioned by the reference support 10, a head-up display with excellent display quality while suppressing assembly errors. Equipment can be provided.
　また、ＨＵＤ装置Ａは、表示光Ｌａを発する表示ユニット１１と、表示光Ｌａを反射する反射鏡１２と、反射鏡１２が反射した表示光Ｌｂが投射されるコンバイナユニット１３と、を基準支持体１０に位置決めして取付けてなるユニット１を、ハウジング２に収容する組み付け方法によって製造する。
　このように組み付けることで、組み付け誤差による表示品位の低下を抑制できると共に、ハウジング２の内側へ表示ユニット１１と反射鏡１２とコンバイナユニット１３をハウジング２に組み付ける場合に比べて、基準支持体１０を中心に外側から組み付けることができるので、組み付け性が良い。 Further, the HUD device A includes a display unit 11 that emits display light La, a reflecting mirror 12 that reflects the display light La, and a combiner unit 13 that projects the display light Lb reflected by the reflecting mirror 12. The unit 1 that is positioned and attached to 10 is manufactured by an assembling method in which the unit 1 is accommodated in the housing 2.
By assembling in this way, it is possible to suppress deterioration in display quality due to an assembling error, and the reference support body 10 can be compared with the case where the display unit 11, the reflecting mirror 12, and the combiner unit 13 are assembled to the housing 2 inside the housing 2. Since it can be assembled to the center from the outside, it is easy to assemble.
　以上、本発明の一実施形態であるヘッドアップディスプレイ装置を説明した。本発明は上述した一実施形態に限定されず、本発明の要旨に逸脱しない範囲で実施形態および図面に変更（構成要素の削除を含む）を加えることができる。 The head-up display device that is an embodiment of the present invention has been described above. The present invention is not limited to the above-described embodiment, and modifications (including deletion of components) can be added to the embodiment and the drawings without departing from the gist of the present invention.
　本発明は、車両に搭載されるヘッドアップディスプレイ装置に好適である。 The present invention is suitable for a head-up display device mounted on a vehicle.
　Ａ　　　：ヘッドアップディスプレイ装置
　１　　　：ユニット
　１０　　：基準支持体
　１００　：基材
　１０１　：第１配置部
　１０２　：導光筒部
　１０２ａ：第２配置部
　１０３ａ，１０３ｂ：第３配置部
　１０４ａ，１０４ｂ：第４配置部
　１０５　：第５配置部
　１０５ａ：導光筒部
　１１　　：表示ユニット
　１２　　：反射鏡
　１３　　：コンバイナユニット
　１３０　：コンバイナ
　１３１　：ホルダ
　１３２　：軸
　１３３　：軸
　１３４　：入力ギア
　１３４ａ：ピン
　１４　　：駆動ユニット
　１４０　：モータ
　１４１　：ウォームギア
　１４２　：減速ギア
　１４３　：出力ギア
　１４３ａ：ピン
　１５　　：光検出基板
　１６　　：制御基板
　Ｓ　　　：弾性部材
　２　　　：ハウジング
　２０　　：下ケース
　２１　　：上ケース
　２１ａ　：開口
　Ｌａ，Ｌｂ，Ｌｃ　　：表示光 A: Head-up display device 1: Unit 10: Reference support 100: Substrate 101: First placement portion 102: Light guide tube portion 102a: Second placement portion 103a, 103b: Third placement portion 104a, 104b: Fourth Arrangement unit 105: fifth arrangement unit 105a: light guide tube unit 11: display unit 12: reflector 13: combiner unit 130: combiner 131: holder 132: shaft 133: shaft 134: input gear 134a: pin 14: drive unit 140 : Motor 141: Worm gear 142: Reduction gear 143: Output gear 143a: Pin 15: Light detection board 16: Control board S: Elastic member 2: Housing 20: Lower case 21: Upper case 21a: Opening La, Lb, Lc: Display light

Claims (6)

  1. 　表示光を発する表示ユニットと、
    　前記表示光を反射する反射鏡と、
    　前記反射鏡が反射した表示光が投射されるコンバイナユニットと、
    　前記表示ユニットと前記反射鏡と前記コンバイナユニットとが位置決めされて取り付けられる基準支持体と、
    　前記基準支持体を収容するハウジングと、
    　を備えたことを特徴とするヘッドアップディスプレイ装置。     A display unit that emits display light;
    A reflecting mirror for reflecting the display light;
    A combiner unit on which the display light reflected by the reflecting mirror is projected;
    A reference support on which the display unit, the reflecting mirror, and the combiner unit are positioned and attached;
    A housing that houses the reference support;
    A head-up display device comprising:
  2. 　前記コンバイナユニットを駆動する駆動ユニットを備え、
    　前記駆動ユニットは前記基準支持体に位置決めされて取り付けられる
    　ことを特徴とする請求項１に記載のヘッドアップディスプレイ装置。     A drive unit for driving the combiner unit;
    The head-up display device according to claim 1, wherein the drive unit is positioned and attached to the reference support.
  3. 　光検出手段を備え、
    　前記基準支持体は筒状孔を有し、
    　前記筒状孔から入光した光が前記光検出手段に入光するように、前記光検出手段は前記基準支持体に位置決めされて取り付けられる
    　ことを特徴とする請求項１または請求項２に記載のヘッドアップディスプレイ装置。     Comprising light detection means,
    The reference support has a cylindrical hole;
    The light detection means is positioned and attached to the reference support so that light incident from the cylindrical hole enters the light detection means. Head up display device.
  4. 　表示光を発する表示ユニットと、前記表示光を反射する反射鏡と、前記反射鏡が反射した表示光が投射されるコンバイナユニットと、を基準支持体に位置決めして取付けてなるユニットを、ハウジングに収容する
    　ことを特徴とするヘッドアップディスプレイ装置の組付け方法。     A unit in which a display unit that emits display light, a reflecting mirror that reflects the display light, and a combiner unit that projects the display light reflected by the reflecting mirror are positioned and attached to a reference support body. A method for assembling a head-up display device, comprising: housing the head-up display device.
  5. 　前記基準支持体に前記コンバイナユニットを駆動する駆動ユニットを位置決めして取り付けた後に、前記ユニットを前記ハウジングに収容する
    　ことを特徴とする請求項４に記載のヘッドアップディスプレイ装置の組付け方法。     The method of assembling the head-up display device according to claim 4, wherein after the drive unit that drives the combiner unit is positioned and attached to the reference support, the unit is accommodated in the housing.
  6. 　前記基準支持体に光検出手段を位置決めして取り付けた後に、前記ユニットを前記ハウジングに収容する
    　ことを特徴とする請求項４または請求項５に記載のヘッドアップディスプレイ装置の組付け方法。     The method of assembling the head-up display device according to claim 4 or 5, wherein the unit is accommodated in the housing after the light detection means is positioned and attached to the reference support.
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JP2019144331A (en) * 2018-02-19 2019-08-29 日本精機株式会社 Head-up display device

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