WO2022091855A1 - ヘッドアップディスプレイ装置 - Google Patents
ヘッドアップディスプレイ装置 Download PDFInfo
- Publication number
- WO2022091855A1 WO2022091855A1 PCT/JP2021/038519 JP2021038519W WO2022091855A1 WO 2022091855 A1 WO2022091855 A1 WO 2022091855A1 JP 2021038519 W JP2021038519 W JP 2021038519W WO 2022091855 A1 WO2022091855 A1 WO 2022091855A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- mirror
- head
- display device
- display
- light
- Prior art date
Links
- 230000003287 optical effect Effects 0.000 claims description 15
- 238000001514 detection method Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 238000012217 deletion Methods 0.000 description 1
- 230000037430 deletion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Images
Classifications
-
- 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
- G02B27/0101—Head-up displays characterised by optical features
-
- 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—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
-
- 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—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
- B60K35/20—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor
- B60K35/21—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor using visual output, e.g. blinking lights or matrix displays
- B60K35/23—Head-up displays [HUD]
-
- 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
- G02B27/0149—Head-up displays characterised by mechanical features
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
- G02B7/182—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors
-
- 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
- B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
- B60K2360/20—Optical features of instruments
- B60K2360/23—Optical features of instruments using reflectors
-
- 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
- B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
- B60K2360/92—Manufacturing of instruments
- B60K2360/96—Manufacturing of instruments by assembling
-
- 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
- G02B27/0149—Head-up displays characterised by mechanical features
- G02B2027/015—Head-up displays characterised by mechanical features involving arrangement aiming to get less bulky devices
Definitions
- This disclosure relates to a head-up display device.
- the head-up display device described in Patent Document 1 has a display unit that emits display light, a folded mirror member that reflects the display light emitted from the display unit, and a front glass that reflects the display light reflected by the folded mirror member. It is provided with a mirror unit that reflects toward the surface and a mirror drive unit that rotates the mirror unit.
- the display light emitted from the display unit expands through the folded mirror member and the mirror unit, so that the mirror unit located on the rear stage side in the optical path of the display light becomes large. As a result, the mirror drive unit and eventually the head-up display device may become large.
- the present disclosure has been made in view of the above circumstances, and an object of the present disclosure is to provide a head-up display device capable of miniaturization.
- the head-up display device is A display unit that emits display light and A first mirror that reflects the display light from the display unit, A second mirror that reflects the display light reflected by the first mirror, and A mirror drive unit that rotates the first mirror about a rotation axis is provided.
- the head-up display device can be miniaturized.
- FIG. 3 is an enlarged perspective view of a part of a head-up display device in a state where the upper case is removed according to an embodiment of the present disclosure.
- the head-up display device 100 is mounted in the dashboard of the vehicle 5.
- the head-up display device 100 emits display light L representing an image toward the windshield 6 which is an example of the projected member of the vehicle 5.
- the display light L is reflected by the windshield 6 and reaches the viewer 1 (mainly the driver of the vehicle 5).
- the head-up display device 100 displays the virtual image V including the vehicle information so as to be visible to the viewer 1.
- the head-up display device 100 includes a display unit 10, a first mirror 20, a mirror holder unit 40, a second mirror 30, a housing 60, and a mirror drive unit 50. , And a control board 70.
- the display unit 10 emits display light L representing an image under the control of the control board 70.
- the display unit 10 includes, for example, a TFT (Thin Film Transistor) type liquid crystal display panel (not shown) and a backlight (not shown) that illuminates the liquid crystal display panel.
- TFT Thin Film Transistor
- the first mirror 20 is a concave mirror that is concavely curved in the width direction W along the rotation axis Ax of the first mirror 20.
- the first mirror 20 reflects the display light L from the display unit 10 toward the second mirror 30.
- the first mirror 20 reflects the upward display light L emitted from the display unit 10 toward the front and the bottom of the vehicle.
- the width W1 along the width direction W of the first mirror 20 is formed smaller than the width W2 along the width direction W of the second mirror 30. That is, in the width direction W, the reflection surface 20a of the first mirror 20 faces the first range N1 of the reflection surface 30a of the second mirror 30, and the mirror drive unit 50 is of the reflection surface 30a of the second mirror 30.
- the height H1 of the first mirror 20 is formed to be smaller than the height H2 of the second mirror 30. Further, the curvature of the first mirror 20 is formed to be smaller than the curvature of the second mirror 30. Further, the first mirror 20 reaches the second mirror 30 while expanding the reflected display light L in the width direction W.
- the mirror holder unit 40 rotatably supports the first mirror 20 around the rotation axis Ax.
- the specific configuration of the mirror holder unit 40 will be described later.
- the mirror drive unit 50 rotates the mirror holder unit 40 together with the first mirror 20 about the rotation axis Ax under the control of the control board 70.
- the specific configuration of the mirror drive unit 50 will also be described later.
- the second mirror 30 reflects the display light L reflected by the first mirror 20 while enlarging it toward the windshield 6 (see FIG. 1).
- the second mirror 30 is non-rotatably fixed in the housing 60.
- the control board 70 acquires vehicle information from the outside and controls the display unit 10 and the mirror drive unit 50 based on the acquired vehicle information.
- the control board 70 is a printed circuit board on which various electronic components such as a CPU (Central Processing Unit), a GDC (Graphics Display Controller), a ROM (Read Only Memory), and a RAM (Random Access Memory) are mounted.
- a CPU Central Processing Unit
- GDC Graphics Display Controller
- ROM Read Only Memory
- RAM Random Access Memory
- the housing 60 is formed in a box shape by a light-shielding member such as resin.
- a light-shielding member such as resin.
- the housing 60 includes an upper case 61, a lower case 68, and a cover 67.
- the lower case 68 has a box shape that opens upward.
- a control board 70 and a display unit 10 are mounted on the outer bottom surface of the lower case 68.
- the cover 67 is attached to the outer bottom surface of the lower case 68 so as to cover the control board 70.
- An optical passage hole 68a through which the display light L emitted by the display unit 10 passes is formed on the inner bottom surface of the lower case 68.
- a mirror holder unit 40 for supporting the first mirror 20, a second mirror 30, and a mirror driving unit 50 are housed in the lower case 68.
- An optical path Sc through which the display light L passes is formed between the first mirror 20 and the second mirror 30 in the lower case 68.
- side wall portions 69a and 69b facing the width direction W are formed via the optical path Sc.
- the upper case 61 functions as a lid of the lower case 68 so as to close the opening of the lower case 68.
- the upper case 61 is formed with an opening 61h at a position facing the windshield 6 (see FIG. 1).
- the upper case 61 includes a curved plate-shaped window portion 65 that closes the opening 61h.
- the window portion 65 is made of a translucent member such as an acrylic resin through which the display light L is transmitted.
- the mirror holder unit 40 includes a mirror holder 41, a first shaft support member 44, a second shaft support member 45, and fixing members 46 and 47.
- the mirror holder 41 includes a mirror support portion 41a, a cover portion 41b, a light-shielding wall portion 42, a shaft portion 41d, a gripped portion 41e, and a shaft portion 41f as shown in FIG. And prepare.
- the mirror support portion 41a supports the first mirror 20 from the back surface opposite to the reflection surface 20a of the first mirror 20.
- the mirror support portion 41a extends along the width direction W and forms a substantially rectangular plate shape long in the width direction W.
- the mirror support portion 41a includes a plurality of contact portions 41a1 and a plurality of connecting portions 41a2.
- the contact portion 41a1 has a rectangular plate shape.
- a plurality of contact portions 41a1 in this example are aligned in the width direction W and are adhered to the back surface of the first mirror 20 via an adhesive or an adhesive means such as double-sided tape.
- Each connecting portion 41a2 is separated from the back surface of the first mirror 20 and connects between the shaft portion 41d, each contact portion 41a1, and the light-shielding wall portion 42.
- the cover portion 41b is formed so as to cover at least the edge portion of the upper side surface of the first mirror 20. This edge portion is a corner portion between the reflecting surface 20a of the first mirror 20 and the upper side surface of the first mirror 20.
- the cover portion 41b is long in the width direction W and has a rectangular plate shape facing the upper side surface of the first mirror 20.
- the shaft portion 41d is located at the first end portion (left end portion in FIG. 7) along the rotation axis Ax of the mirror holder 41, and forms a substantially columnar shape extending along the rotation axis Ax.
- the shaft portion 41d is rotatably supported by the second shaft support member 45.
- the shaft portion 41f is located at the second end portion opposite to the first end portion along the rotation shaft Ax of the mirror holder 41, and is shafted by the first shaft support member 44 (see FIG. 12). It is rotatably supported.
- the shaft portion 41f has a substantially triangular pyramid-shaped receiving hole 41h.
- a spherical portion 44d, which will be described later, of the first shaft support member 44 comes into contact with each inner surface of the receiving hole 41h.
- the shaft portion 41f is rotatably supported around the rotation shaft Ax by the first shaft support member 44 in a state where the spherical portion 44d is in contact with each inner surface of the receiving hole 41h.
- the light-shielding wall portion 42 is located between the optical path Sc through which the display light L passes and the mirror drive unit 50, and blocks sunlight or the display light L from the optical path Sc toward the mirror drive unit 50. ..
- the light-shielding wall portion 42 suppresses the mirror drive portion 50 from being illuminated by sunlight or the display light L.
- the light-shielding wall portion 42 is located above the portion of the side wall portion 69a of the lower case 68 near the first mirror 20.
- the light-shielding wall portion 42 includes a first plate portion 42a, a second plate portion 42b, and a third plate portion 42c.
- the first plate portion 42a is inclined along the light expansion of the display light L reflected by the first mirror 20.
- the first plate portion 42a is connected to the second end portion side (right end portion in FIG. 7) of the mirror support portion 41a and is reflected by the first mirror 20 along the light emission direction and the light expansion direction of the display light L. Extends.
- the first plate portion 42a is located inside the side wall portion 69a of the lower case 68 in the width direction W.
- the second plate portion 42b surrounds the shaft portion 41f from above.
- the second plate portion 42b is formed on the back surface of the first plate portion 42a on the opposite side of the optical path Sc.
- the third plate portion 42c is formed so as to hide the gripped portion 41e from the optical path Sc.
- the third plate portion 42c extends in a direction intersecting the width direction W, is located farther from the mirror holder 41 than the first plate portion 42a, and is located outside the width direction W than the first plate portion 42a.
- the third plate portion 42c is located outside the side wall portion 69a of the lower case 68 in the width direction W.
- the first shaft support member 44 includes a fixing portion 44a, a holding member support portion 44b, and a shaft support portion 44c.
- the fixing portion 44a is fixed in the lower case 68.
- the holding member support portion 44b extends upward from the fixing portion 44a and supports the holding member 55 described later of the mirror drive portion 50.
- the shaft support portion 44c supports the shaft portion 41d so that the mirror holder 41 can rotate about the rotation shaft Ax.
- the shaft support portion 44c includes a spherical portion 44d that contacts the receiving hole 41h (see FIG. 11) of the shaft portion 41f, and a cylindrical portion 44f located on the outer periphery of the spherical portion 44d and the shaft portion 41f.
- the spherical portion 44d is integrally formed as a part of the first shaft support member 44. As a result, the number of parts can be reduced as compared with the case where the spherical portion 44d is formed as a separate body.
- the spherical portion 44d is formed in a substantially hemispherical shape.
- the spherical portion 44d has a substantially hemispherical shape having a portion divided into three in the rotation direction about the rotation axis Ax, and the divided three portions have a substantially triangular pyramid-shaped receiving hole 41h. Contact each surface. As a result, the shaft portion 41f is supported by the shaft support portion 44c.
- the fixing member 46 fixes the shaft support portion 44c and the shaft portion 41f so as to be relatively rotatable around the rotation shaft Ax in a state where the shaft portion 41f is supported by the shaft support portion 44c.
- the fixing member 46 is formed as a substantially U-shaped metal clip, and sandwiches the shaft support portion 44c and the shaft portion 41f from the outside.
- the second shaft support member 45 is fixed in the lower case 68 and rotatably supports the shaft portion 41d from the lower side around the rotation shaft Ax.
- the fixing member 47 is a metal plate material, and the shaft portion 41d is pushed toward the second shaft support member 45 from above.
- the mirror drive unit 50 includes a motor 52, a conversion mechanism 53 that converts the rotational motion of the motor 52 into a linear motion, a holding member 55 that holds the motor 52 and the conversion mechanism 53, and a position detection unit. 57 and.
- the conversion mechanism 53 has a lead screw 53a and a slider 53b.
- the holding member 55 is fixed to the holding member support portion 44b of the first shaft support member 44, holds the lead screw 53a rotatably, and is equipped with the motor 52.
- the holding member 55 includes a first plate portion 55a, a second plate portion 55b extending in a direction orthogonal to the first plate portion 55a from the lower end of the first plate portion 55a, and a second plate portion 55a from the upper end.
- a third plate portion 55c extending in the same direction as the plate portion 55b is provided.
- a lead screw 53a extending in a rod shape along the height direction H is rotatably supported between the second plate portion 55b and the third plate portion 55c.
- a screw is cut on the outer circumference of the lead screw 53a.
- a motor 52 is fixed to the lower surface of the second plate portion 55b. The motor 52 is driven by the control of the control board 70 and rotates the lead screw 53a around the axis.
- the slider 53b has a shape that sandwiches the gripped portion 41e of the mirror holder 41.
- the slider 53b is engaged with the outer circumference of the lead screw 53a and moves along the axial direction of the lead screw 53a as the lead screw 53a rotates.
- the mirror holder 41 rotates about the rotation axis Ax together with the first mirror 20 via the gripped portion 41e.
- the rotation angle of the mirror holder 41 and the first mirror 20 about the rotation axis Ax is set to 10 ° to 20 °, for example, 15 °.
- the position detection unit 57 detects, for example, that the slider 53b has reached the lower end of the lead screw 53a (the end on the motor 52 side), and outputs the detection result to the control board 70.
- the position detection unit 57 is composed of a push switch pushed by the slider 53b.
- the mirror holder 41 rotates about the rotation axis Ax together with the first mirror 20 by the mirror drive unit 50 under the control of the control board 70.
- the irradiation range Ar (see FIG. 4) on the reflection surface 30a of the second mirror 30 in the display light L reflected by the first mirror 20 becomes H in the height direction. Moving. As a result, the irradiation position of the display light L with respect to the viewer 1 moves in the height direction H.
- the head-up display device 100 displays the display unit 10 that emits the display light L, the first mirror 20 that reflects the display light L from the display unit 10, and the display light L reflected by the first mirror 20.
- a second mirror 30 that reflects light and a mirror drive unit 50 that rotates the first mirror 20 about the rotation axis Ax are provided.
- the first mirror 20 and the second mirror 30 the first mirror 20 on the front stage side can rotate about the rotation axis Ax.
- the display light L reaches the first mirror 20 which is a rotating mirror before the display light L is enlarged, so that the size of the first mirror 20 which is a rotating mirror can be reduced.
- the force required for the rotation of the first mirror 20 is reduced, and the mirror drive unit 50 can be miniaturized. Therefore, the size of the head-up display device 100 can be reduced.
- the head-up display device 100 includes a mirror holder 41 that supports the first mirror 20.
- the mirror holder 41 includes a cover portion 41b formed so as to cover the upper side surface of the first mirror 20. According to this configuration, it is suppressed that the sunlight or the display light L reaches the upper end of the first mirror 20 and becomes stray light. As a result, the generation of stray light can be suppressed, and the display quality of the virtual image V can be improved. In particular, since light tends to collect on the edge portion of the first mirror 20, it is preferable that this edge portion is hidden by the cover portion 41b.
- the head-up display device 100 includes a mirror holder 41 that supports the first mirror 20.
- the mirror holder 41 is formed in the head-up display device 100 between the optical path Sc through which the display light L passes and the mirror drive unit 50, and includes a light-shielding wall portion 42 that hides the mirror drive unit 50 from the optical path Sc.
- the light-shielding wall portion 42 suppresses the sunlight or the display light L from reaching the mirror drive portion 50. As a result, the generation of stray light can be suppressed, and the display quality of the virtual image V can be improved.
- the head-up display device 100 has a shaft portion 41f located at the end of the first mirror 20 in the direction along the rotation axis Ax, and has a mirror holder 41 that supports the first mirror 20 and a shaft portion 41f.
- a first shaft support member 44 which is an example of a shaft support portion that rotatably supports the shaft, is provided.
- a spherical portion 44d is formed in the first shaft support member 44, and a receiving hole 41h into which the spherical portion 44d is inserted is formed in the shaft portion 41f. According to this configuration, it is possible to reduce friction or wear between the mirror holder 41 and the first shaft support member 44 due to the rotation of the mirror holder 41.
- the first mirror 20 is a concave mirror, and the width W1 in the direction along the rotation axis Ax of the first mirror 20 is smaller than the width W2 in the direction along the rotation axis Ax of the second mirror 30. According to this configuration, the size of the first mirror 20 can be reduced.
- the first mirror 20 is positioned so as to face the first range N1 which is a part of the second mirror 30.
- the mirror drive unit 50 is located so as to face the second range N2, which is the remaining portion of the second mirror 30. According to this configuration, since both the first mirror 20 and the mirror driving unit 50 are arranged so as to face the second mirror 30, the head-up display device 100 can be miniaturized.
- the head-up display device 100 includes two mirrors (first mirror 20 and second mirror 30), but the number of mirrors is not limited to this and may be three or more.
- the mirror in the front stage closest to the display unit 10 in the optical path of the display light L among the three mirrors, or the mirror in the middle stage located in the middle in the optical path is used. It is configured to be rotatable.
- first shaft support member 44 and the second shaft support member 45 are formed separately from the lower case 68, but the present invention is not limited to this, and the first shaft support member 44 and the second shaft support member 45 may be integrally formed with the lower case 68. good.
- the light-shielding wall portion 42 may be omitted.
- the first shaft support member 44 is formed with a spherical portion 44d, and the shaft portion 41f is formed with a receiving hole 41h into which the spherical portion 44d is inserted, but the shaft portion 41f is not limited to this.
- the spherical portion 44d may be formed, and the first shaft support member 44 may be formed with a receiving hole 41h into which the spherical portion 44d is inserted.
- the shaft portion 41f has a receiving hole 41h, and the spherical portion 44d of the first shaft support member 44 is formed so as to fit in the receiving hole 41h, but the present invention is not limited to this configuration.
- the shaft portion 41f and the first shaft support member 44 may be configured in the same manner as the shaft portion 41d and the second shaft support member 45.
- the head-up display device 100 emits the display light L toward the windshield 6 which is an example of the projected member, but the display light L is directed toward a dedicated combiner as an example of the projected member. L may be emitted. Further, the head-up display device 100 may be mounted on a vehicle other than the vehicle 5.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Instrument Panels (AREA)
Abstract
Description
表示光を出射する表示部と、
前記表示部からの前記表示光を反射する第1ミラーと、
前記第1ミラーにて反射した前記表示光を反射する第2ミラーと、
前記第1ミラーを回転軸を中心に回転させるミラー駆動部と、を備える。
図1に示すように、ヘッドアップディスプレイ装置100は、車両5のダッシュボード内に搭載されている。ヘッドアップディスプレイ装置100は、車両5の被投射部材の一例であるフロントガラス6に向けて画像を表す表示光Lを出射する。表示光Lはフロントガラス6で反射して視認者1(主に車両5の運転者)に到達する。これにより、ヘッドアップディスプレイ装置100は、視認者1により視認可能に車両情報を含む虚像Vを表示する。
図5に示すように、第1ミラー20の幅方向Wに沿う幅W1は、第2ミラー30の幅方向Wに沿う幅W2よりも小さく形成されている。すなわち、幅方向Wにおいて、第1ミラー20の反射面20aは第2ミラー30の反射面30aのうち第1範囲N1に対向し、ミラー駆動部50は、第2ミラー30の反射面30aのうち残りの第2範囲N2に対向する。
図4に示すように、第1ミラー20の高さH1は、第2ミラー30の高さH2よりも小さく形成されている。
また、第1ミラー20の曲率は、第2ミラー30の曲率よりも小さく形成されている。さらに、第1ミラー20は、反射させた表示光Lを幅方向Wに拡大させつつ第2ミラー30に到達させる。
ミラー駆動部50は、制御基板70による制御のもと、ミラーホルダユニット40を第1ミラー20とともに回転軸Axを中心に回転させる。ミラー駆動部50の具体的な構成についても後述する。
詳しくは、筐体60は、上ケース61と、下ケース68と、カバー67と、を備える。
図4に示すように、下ケース68内には、第1ミラー20を支持するミラーホルダユニット40、第2ミラー30及びミラー駆動部50が収容されている。下ケース68内における第1ミラー20と第2ミラー30の間には、表示光Lが通過する光路Scが形成されている。下ケース68内には、光路Scを介して幅方向Wに対面する側壁部69a,69bが形成されている。
図6に示すように、ミラーホルダユニット40は、ミラーホルダ41と、第1軸支持部材44と、第2軸支持部材45と、固定部材46,47と、を備える。
図7に示すように、ミラーホルダ41は、ミラー支持部41aと、カバー部41bと、遮光壁部42と、軸部41dと、被把持部41eと、図11に示すように、軸部41fと、を備える。
図7に示すように、ミラー支持部41aは、第1ミラー20の反射面20aとは反対側の裏面から第1ミラー20を支持する。ミラー支持部41aは、幅方向Wに沿って延び、幅方向Wに長い略長方形板状をなす。ミラー支持部41aは、複数の接触部41a1と、複数の連結部41a2と、を備える。接触部41a1は矩形板状をなす。複数、本例では2つの接触部41a1は、幅方向Wに並び、第1ミラー20の裏面に接着剤又は両面テープ等の接着手段を介して接着される。各連結部41a2は、第1ミラー20の裏面とは離間して、軸部41d、各接触部41a1及び遮光壁部42の間を連結する。
図11に示すように、軸部41fは、ミラーホルダ41の回転軸Axに沿う第1端部と反対側の第2端部に位置し、第1軸支持部材44(図12参照)により軸回転可能に支持される。軸部41fは、略三角錐状の受け穴41hを有する。受け穴41hの各内面には第1軸支持部材44の後述する球状部44dが接触する。受け穴41hの各内面に球状部44dが接触した状態で、軸部41fが第1軸支持部材44により回転軸Axを中心に回転可能に支持される。
第1板部42aは、第1ミラー20にて反射した表示光Lの光拡大に沿うように傾斜する。第1板部42aは、ミラー支持部41aの第2端部側(図7の右側端部)に連結されて第1ミラー20にて反射した表示光Lの光出射方向及び光拡大方向に沿って延びる。図8に示すように、第1板部42aは、下ケース68の側壁部69aよりも幅方向Wの内側に位置する。
固定部44aは、下ケース68内に固定されている。
保持部材支持部44bは、固定部44aから上方へ延びて、ミラー駆動部50の後述する保持部材55を支持する。
軸支持部44cは、ミラーホルダ41が回転軸Axを中心に回転可能となるように軸部41dを支持する。軸支持部44cは、軸部41fの受け穴41h(図11参照)に接触する球状部44dと、球状部44d及び軸部41fの外周に位置する筒状部44fと、を備える。球状部44dは第1軸支持部材44の一部として一体形成されている。これにより、球状部44dを別体で形成するよりも、部品点数を減らすことができる。球状部44dは、略半球状に形成されている。本例では、球状部44dは、回転軸Axを中心とした回転方向において3つに分割された部位を有する略半球状をなし、分割された3つの部位は略三角錐状の受け穴41hの各面に接触する。これにより、軸支持部44cにより軸部41fが支持される。軸支持部44cが略半球状に形成されることにより、回転軸Axを中心としたミラーホルダ41の回転に伴って軸支持部44cが摩耗することを抑制できる。
図10に示すように、固定部材46は、軸支持部44cにより軸部41fが支持された状態で、軸支持部44cと軸部41fを回転軸Axを中心に相対回転可能に固定する。固定部材46は略U字状の金属製のクリップとして形成され、軸支持部44cと軸部41fを外側から挟み込む。
図9に示すように、ミラー駆動部50は、モータ52と、モータ52の回転運動を直線運動に変換する変換機構53と、モータ52及び変換機構53を保持する保持部材55と、位置検出部57と、を備える。
第2板部55bの下面にはモータ52が固定されている。モータ52は、制御基板70の制御により駆動され、リードスクリュー53aを軸回転させる。
ミラーホルダ41は、制御基板70による制御のもとミラー駆動部50により、第1ミラー20とともに回転軸Axを中心に回転する。第1ミラー20が回転軸Axを中心に回転すると、第1ミラー20にて反射した表示光Lにおける第2ミラー30の反射面30aへの照射範囲Ar(図4参照)が高さ方向Hに移動する。これにより、視認者1に対する表示光Lの照射位置が高さ方向Hに移動する。
以上、説明した一実施形態によれば、以下の効果を奏する。
(1)ヘッドアップディスプレイ装置100は、表示光Lを出射する表示部10と、表示部10からの表示光Lを反射する第1ミラー20と、第1ミラー20にて反射した表示光Lを反射する第2ミラー30と、回転軸Axを中心に第1ミラー20を回転させるミラー駆動部50と、を備える。
この構成によれば、第1ミラー20と第2ミラー30の2つのミラーのうち前段側の第1ミラー20が回転軸Axを中心に回転可能となる。これにより、表示光Lが拡大する前に回転ミラーである第1ミラー20に到達するため、回転ミラーである第1ミラー20の小型化を図ることができる。これに伴い第1ミラー20の回転時に必要となる力が小さくなり、ミラー駆動部50の小型化を図ることができる。従って、ヘッドアップディスプレイ装置100の小型化を図ることができる。
この構成によれば、太陽光又は表示光Lが第1ミラー20の上端に到達して迷光となることが抑制される。これにより、迷光の発生を抑制でき、虚像Vの表示品位を向上させることができる。
特に、第1ミラー20のエッジ部分に光が集まりやすいため、このエッジ部分がカバー部41bにより隠されることは好ましい。
この構成によれば、遮光壁部42により、太陽光又は表示光Lがミラー駆動部50に到達することが抑制される。これにより、迷光の発生を抑制でき、虚像Vの表示品位を向上させることができる。
この構成によれば、ミラーホルダ41の回転に伴うミラーホルダ41と第1軸支持部材44の間の摩擦又は摩耗を低減することができる。
この構成によれば、第1ミラー20の小型化を図ることができる。
この構成によれば、第1ミラー20とミラー駆動部50の両方が第2ミラー30に対面するように配置されるため、ヘッドアップディスプレイ装置100の小型化を図ることができる。
上記実施形態においては、ヘッドアップディスプレイ装置100は、2つのミラー(第1ミラー20と第2ミラー30)を備えていたが、ミラーの数はこれに限らず3つ以上であってもよい。例えば、ヘッドアップディスプレイ装置100は、3つのミラーを備える場合には、3つのミラーのうち表示光Lの光路において表示部10に最も近い前段のミラー、又は光路において中間に位置する中段のミラーを回転可能に構成される。
上記実施形態において遮光壁部42は省略されてもよい。
また、上記実施形態においては、軸部41fは受け穴41hを有し、受け穴41hには第1軸支持部材44の球状部44dが嵌まるように形成されていたが、この構成に限らず、軸部41fと第1軸支持部材44は、軸部41dと第2軸支持部材45と同様に構成されてもよい。
上記実施形態においては、ヘッドアップディスプレイ装置100は、被投射部材の一例であるフロントガラス6に向けて表示光Lを出射していたが、被投射部材の一例として専用のコンバイナに向けて表示光Lを出射してもよい。
また、ヘッドアップディスプレイ装置100は、車両5以外の乗り物に搭載されていてもよい。
5 車両
6 フロントガラス
10 表示部
20 第1ミラー
20a 反射面
30 第2ミラー
30a 反射面
40 ミラーホルダユニット
41 ミラーホルダ
41a ミラー支持部
41b カバー部
41a1 接触部
41a2 連結部
41d,41f 軸部
41e 被把持部
41h 受け穴
42 遮光壁部
42a 第1板部
42b 第2板部
42c 第3板部
44 第1軸支持部材
44a 固定部
44b 保持部材支持部
44c 軸支持部
44d 球状部
45 第2軸支持部材
46,47 固定部材
50 ミラー駆動部
52 モータ
53 変換機構
53a リードスクリュー
53b スライダ
55 保持部材
55a 第1板部
55b 第2板部
55c 第3板部
57 位置検出部
60 筐体
61 上ケース
61h 開口部
65 窓部
67 カバー
68 下ケース
68a 光通過孔
69a,69b 側壁部
70 制御基板
100 ヘッドアップディスプレイ装置
H 高さ方向
L 表示光
N1 第1範囲
N2 第2範囲
V 虚像
W 幅方向
Ar 照射範囲
Sc 光路
Ax 回転軸
Claims (6)
- 表示光を出射する表示部と、
前記表示部からの前記表示光を反射する第1ミラーと、
前記第1ミラーにて反射した前記表示光を反射する第2ミラーと、
前記第1ミラーを回転軸を中心に回転させるミラー駆動部と、を備える、
ヘッドアップディスプレイ装置。 - 前記第1ミラーを支持するミラーホルダを備え、
前記ミラーホルダは、前記第1ミラーの上側面を覆うように形成されるカバー部を備える、
請求項1に記載のヘッドアップディスプレイ装置。 - 前記第1ミラーを支持するミラーホルダを備え、
前記ミラーホルダは、前記ヘッドアップディスプレイ装置内において前記表示光が通過する光路と前記ミラー駆動部の間に形成され、前記光路から前記ミラー駆動部を隠す遮光壁部を備える、
請求項1又は2に記載のヘッドアップディスプレイ装置。 - 前記第1ミラーの前記回転軸に沿う方向の端部に位置する軸部を有し、前記第1ミラーを支持するミラーホルダと、
前記軸部を回転可能に支持する軸支持部と、を備え、
前記軸部と前記軸支持部の何れか一方には球状部が形成され、
前記軸部と前記軸支持部の何れか他方には前記球状部が入る受け穴が形成される、
請求項1から3の何れか1項に記載のヘッドアップディスプレイ装置。 - 前記第1ミラーは凹面鏡であり、
前記第1ミラーの前記回転軸に沿う方向の幅は、前記第2ミラーの前記回転軸に沿う方向の幅よりも小さい、
請求項1から4の何れか1項に記載のヘッドアップディスプレイ装置。 - 前記第1ミラーは、前記第2ミラーの一部に対面するように位置し、
前記ミラー駆動部は、前記第2ミラーの残りの部分に対面するように位置する、
請求項5に記載のヘッドアップディスプレイ装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112021005666.2T DE112021005666T5 (de) | 2020-10-26 | 2021-10-19 | Head-up-Display-Vorrichtung |
US18/248,460 US20230408813A1 (en) | 2020-10-26 | 2021-10-19 | Head-up display device |
JP2022559026A JPWO2022091855A1 (ja) | 2020-10-26 | 2021-10-19 | |
CN202190000812.XU CN220232108U (zh) | 2020-10-26 | 2021-10-19 | 平视显示装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2020178509 | 2020-10-26 | ||
JP2020-178509 | 2020-10-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022091855A1 true WO2022091855A1 (ja) | 2022-05-05 |
Family
ID=81383815
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2021/038519 WO2022091855A1 (ja) | 2020-10-26 | 2021-10-19 | ヘッドアップディスプレイ装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20230408813A1 (ja) |
JP (1) | JPWO2022091855A1 (ja) |
CN (1) | CN220232108U (ja) |
DE (1) | DE112021005666T5 (ja) |
WO (1) | WO2022091855A1 (ja) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014085539A (ja) * | 2012-10-24 | 2014-05-12 | Nippon Seiki Co Ltd | ヘッドアップディスプレイ装置 |
JP2015087698A (ja) * | 2013-11-01 | 2015-05-07 | Necプラットフォームズ株式会社 | 虚像表示装置 |
WO2017130763A1 (ja) * | 2016-01-27 | 2017-08-03 | 日本精機株式会社 | ヘッドアップディスプレイ装置 |
US20190219823A1 (en) * | 2018-01-18 | 2019-07-18 | Visteon Global Technologies, Inc. | Head-up display system |
EP3683615A1 (en) * | 2019-01-18 | 2020-07-22 | Continental Automotive GmbH | A head-up display device for a vehicle and vehicle |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7010045B2 (ja) | 2018-02-14 | 2022-02-10 | 日本精機株式会社 | ヘッドアップディスプレイ装置 |
-
2021
- 2021-10-19 CN CN202190000812.XU patent/CN220232108U/zh active Active
- 2021-10-19 US US18/248,460 patent/US20230408813A1/en active Pending
- 2021-10-19 DE DE112021005666.2T patent/DE112021005666T5/de active Pending
- 2021-10-19 JP JP2022559026A patent/JPWO2022091855A1/ja active Pending
- 2021-10-19 WO PCT/JP2021/038519 patent/WO2022091855A1/ja active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014085539A (ja) * | 2012-10-24 | 2014-05-12 | Nippon Seiki Co Ltd | ヘッドアップディスプレイ装置 |
JP2015087698A (ja) * | 2013-11-01 | 2015-05-07 | Necプラットフォームズ株式会社 | 虚像表示装置 |
WO2017130763A1 (ja) * | 2016-01-27 | 2017-08-03 | 日本精機株式会社 | ヘッドアップディスプレイ装置 |
US20190219823A1 (en) * | 2018-01-18 | 2019-07-18 | Visteon Global Technologies, Inc. | Head-up display system |
EP3683615A1 (en) * | 2019-01-18 | 2020-07-22 | Continental Automotive GmbH | A head-up display device for a vehicle and vehicle |
Also Published As
Publication number | Publication date |
---|---|
CN220232108U (zh) | 2023-12-22 |
US20230408813A1 (en) | 2023-12-21 |
DE112021005666T5 (de) | 2023-08-10 |
JPWO2022091855A1 (ja) | 2022-05-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5146906B2 (ja) | ヘッドアップディスプレイ装置 | |
JP5953815B2 (ja) | ヘッドアップディスプレイ装置 | |
JP2005331534A (ja) | ヘッドアップディスプレイ装置 | |
JP7001034B2 (ja) | 虚像表示装置 | |
JP2011150099A (ja) | ミラーユニット | |
JP2009126494A (ja) | ヘッドアップディスプレイ装置 | |
JP2019078966A (ja) | ミラーユニット及びヘッドアップディスプレイ装置 | |
JP7347142B2 (ja) | 虚像表示装置 | |
WO2022091855A1 (ja) | ヘッドアップディスプレイ装置 | |
JP5029880B2 (ja) | ヘッドアップディスプレイ装置 | |
JP2019139128A (ja) | ヘッドアップディスプレイ装置 | |
JP5618145B2 (ja) | ミラーユニット | |
JP5257159B2 (ja) | ヘッドアップディスプレイ装置 | |
JP2009222882A (ja) | ヘッドアップディスプレイ装置 | |
KR200426797Y1 (ko) | 투사장치를 가진 노트북 컴퓨터 | |
CN215793176U (zh) | 平视显示器装置 | |
JPH10278629A (ja) | 車両用ヘッドアップディスプレイ装置 | |
JP7172644B2 (ja) | ヘッドアップディスプレイ装置 | |
WO2021059953A1 (ja) | ヘッドアップディスプレイ | |
JP2020134703A (ja) | ミラー装置及びヘッドアップディスプレイ装置 | |
JP7380402B2 (ja) | 虚像表示装置 | |
CN216927273U (zh) | 平视显示装置 | |
JP6973940B2 (ja) | 投影装置 | |
WO2021256456A1 (ja) | ヘッドアップディスプレイ装置 | |
JP2024018211A (ja) | ヘッドアップディスプレイ |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 21885974 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2022559026 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 202190000812.X Country of ref document: CN |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 21885974 Country of ref document: EP Kind code of ref document: A1 |