WO2016204021A1 - Dispositif d'affichage tête haute - Google Patents

Dispositif d'affichage tête haute Download PDF

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Publication number
WO2016204021A1
WO2016204021A1 PCT/JP2016/066882 JP2016066882W WO2016204021A1 WO 2016204021 A1 WO2016204021 A1 WO 2016204021A1 JP 2016066882 W JP2016066882 W JP 2016066882W WO 2016204021 A1 WO2016204021 A1 WO 2016204021A1
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WO
WIPO (PCT)
Prior art keywords
light
light shielding
lower wall
wall portions
head
Prior art date
Application number
PCT/JP2016/066882
Other languages
English (en)
Japanese (ja)
Inventor
宏幸 古澤
孝紀 茂野
Original Assignee
日本精機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 日本精機株式会社 filed Critical 日本精機株式会社
Publication of WO2016204021A1 publication Critical patent/WO2016204021A1/fr

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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—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • 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

Definitions

  • the present invention relates to an improved head-up display device.
  • a vehicle such as a vehicle may be equipped with a head-up display device capable of projecting information in front of an occupant.
  • An occupant can obtain information by visually recognizing a virtual image projected forward.
  • a conventional technique related to a head-up display device there is a technique disclosed in Patent Document 1.
  • a head-up display device as shown in Patent Document 1 has upper and lower cases that can be divided, and an emission device that is housed in these cases and can emit light.
  • an opening through which light emitted from the emitting device passes and a light shielding portion that overlaps part of the opening and blocks sunlight.
  • the light emitted from the emission device passes through the opening and is projected onto the projection surface.
  • a part of the light blocked by the light blocking portion may be reflected toward the projection surface portion such as the windshield.
  • the reflected light can be reflected on the projection surface.
  • This invention makes it a subject to provide the technique which can suppress the reflection of a light-shielding part.
  • the emission device for emitting light is accommodated in the case, and the upper portion of the emission device is covered by the light shielding portion.
  • a head-up display device is provided in which a low-reflection sheet that suppresses reflection of sunlight is attached to an upper surface of the light-shielding portion.
  • an upper and lower wall portion extends in the vertical direction adjacent to the light shielding portion,
  • the surface of the upper and lower wall portions is rougher than the upper surface of the light shielding portion by being coated to suppress reflection of sunlight,
  • the surface roughness of the boundary portion which is the boundary between the light shielding portion and the upper and lower wall portions, is rougher than the upper surface of the light shielding portion and smoother than the surfaces of the upper and lower wall portions.
  • a low-reflection sheet that suppresses reflection of sunlight is attached to the upper surface of the light shielding portion. Thereby, the reflection of the light shielding part on the projection surface part can be suppressed.
  • the light shielding part has a so-called three-dimensional shape in which the curvature continuously changes.
  • a low reflection sheet By attaching a low reflection sheet to such a light shielding part, the reflection of sunlight can be suppressed evenly over the entire upper surface of the light shielding part.
  • a paint for suppressing reflection is applied to the light shielding portion.
  • the low-reflection sheet in which the low-reflection sheet is attached, it is possible to suppress the reflection of sunlight uniformly over the entire upper surface of the light-shielding portion and contribute to shortening the manufacturing time of the head-up display device.
  • the surface of the upper and lower wall portions extending in the vertical direction adjacent to the light shielding portion is coated to suppress reflection of sunlight.
  • the upper and lower wall portions extending in the vertical direction are portions where reflection on the projection surface portion hardly occurs. For this reason, even if it is a cheap coating compared with a low reflection sheet, reflection of an upper and lower wall part can fully be suppressed.
  • the roughness of the surface of the boundary which is the boundary between the light shielding portion and the upper and lower wall portions, is rougher than the upper surface of the light shielding portion and smoother than the surfaces of the upper and lower wall portions.
  • the upper surface of the light shielding part is formed smoothly so that a low reflection sheet can be attached.
  • the upper and lower walls are roughened by being painted.
  • the low reflection sheet may be peeled off from the surface of the upper and lower wall portions.
  • the exposed portion of the boundary portion may be reflected on the projection surface portion.
  • the roughness of the surface of the boundary portion is set to be rougher than the upper surface of the light shielding portion and smoother than the surfaces of the upper and lower wall portions.
  • FIG. 1 is a perspective view of a head-up display device according to an embodiment of the present invention.
  • FIG. 2 is a sectional view taken along line 2-2 of FIG.
  • FIG. 2 is a perspective view of an upper case shown in FIG. 1. It is a figure explaining sticking to the light-shielding part of the low reflection sheet shown by FIG.
  • FIG. 5 is a sectional view taken along line 5-5 of FIG.
  • FIG. 6 is an enlarged view of 6 parts in FIG. 5. It is a figure explaining the comparative example of the head-up display apparatus shown by FIG.
  • left and right refer to the left and right based on the vehicle occupant
  • front and rear refer to the front and rear based on the traveling direction of the vehicle.
  • Fr indicates the front
  • Rr indicates the rear
  • Le indicates the left when viewed from the occupant
  • Ri indicates the right when viewed from the occupant
  • Up indicates the upper side
  • Dn indicates the lower side.
  • the head-up display device 10 is mounted on a vehicle, for example. An occupant can recognize information by visually recognizing a virtual image projected on the windshield of the vehicle.
  • the head-up display device 10 includes an emission device 20 for emitting information inside the case 11. Inside the case 11, a plane mirror 13 and a concave mirror 14 for reflecting the light emitted from the emission device 20 are attached. The upper part of the case 11 is formed in an opening shape, and a transparent cover 15 made of a transparent film is put on the opening.
  • the case 11 is formed by covering the lower case 30 with the upper case 40.
  • the emitting device 20 includes an LED backlight 21, a first lens 22 through which light emitted from the backlight 21 passes, and a reflecting mirror 23 that reflects the light that has passed through the first lens 22 upward. And a second lens 24 through which light reflected by the reflecting mirror 23 passes, and a liquid crystal panel 25 on which information is displayed by irradiation with the light that has passed through the second lens 24.
  • the light that has passed through the liquid crystal panel 25 is reflected by the plane mirror 13 and the concave mirror 14, passes through the translucent cover 15, and is emitted to the outside of the case 11.
  • the emitted light is projected onto the windshield of the vehicle. It can be said that the windshield is a projection surface portion on which light is projected.
  • the flat mirror 13 is a reflecting mirror in which a flat reflecting surface is formed by depositing a metal such as aluminum on the surface of a resin member such as polycarbonate (PC).
  • the plane mirror 13 reflects the light emitted from the emitting device 20 toward the concave mirror 14. The optical path length until the reflected light reaches the windshield becomes longer, and a virtual image can be displayed in front of the windshield.
  • the concave mirror 14 is, for example, a reflecting mirror in which a concave reflecting surface is formed by depositing a metal such as aluminum on the surface of a resin member such as polycarbonate.
  • the light reflected by the reflecting surface of the concave mirror 14 is magnified, and a large virtual image can be displayed on the windshield even if the emitting device 20 is made of a relatively small and inexpensive one.
  • the concave shape of the reflecting surface of the concave mirror 14 is designed so as to cancel out distortion caused by the curved shape of the windshield.
  • the translucent cover 15 is made of a translucent resin material such as polymethyl methacrylate resin (PMMA).
  • PMMA polymethyl methacrylate resin
  • the periphery of the translucent cover 15 is a cover mask portion 15a formed by black printing.
  • the cover mask portion 15 a is formed continuously on the periphery of the translucent cover 15.
  • the cover mask portion 15 a is configured to prevent external light such as sunlight from entering the inside of the case 11. This is because if sunlight is incident, the display quality of the virtual image may be degraded.
  • the lower case 30 is made of a resin material such as polypropylene (PP), for example.
  • the lower case 30 is formed with a storage portion 31 for storing the emission device 20, a mounting portion 32 of the flat mirror 13, and a mounting portion 33 of the concave mirror 14.
  • the upper case 40 is made of, for example, a mixed resin material of polycarbonate and polyethylene terephthalate (PET).
  • An upper end of the upper case 40 is an opening 41 covered with a translucent cover 15.
  • the upper case 40 is formed with a light shielding portion 42 for blocking a part of the opening 41 and blocking sunlight toward the emitting device 20.
  • the light shielding part 42 extends substantially in parallel to the windshield (projection surface part). That is, it can be said that it is one of the parts most easily reflected on the projection surface.
  • An upper and lower wall portion 43 extends downward from the right front end of the light shielding portion 42.
  • the upper and lower wall portions 43 extend in a substantially vertical direction.
  • the boundary between the light shielding portion 42 and the upper and lower wall portions 43 is a boundary portion 44 set to a predetermined surface roughness.
  • an upper and lower wall part 45 constituting a side wall of the upper case 40 extends in the vertical direction.
  • the upper and lower wall portions 45 extend in a substantially vertical direction.
  • the boundary between the light shielding portion 42 and the upper and lower wall portions 45 is a boundary portion 46 set to a predetermined surface roughness. The same applies to the left end of the light shielding portion 42.
  • the light shielding part 42 has a curved shape whose curvature changes continuously.
  • a low reflection sheet 50 that suppresses reflection of sunlight is affixed to the upper surface of the light shielding portion 42.
  • the low reflection sheet 50 is a black sheet with urethane foam applied to the surface. It is desirable that the low reflection sheet 50 further has excellent heat resistance and generates little volatile gas (low outgas).
  • the upper part of the front end of the low reflection sheet 50 is covered with a cover mask portion 15a.
  • a polyester sheet 51 is prepared.
  • a double-sided tape 52 is attached to one side of the sheet base 51, and a release paper 53 is attached to one side of the double-sided tape 52.
  • the low reflection sheet 50 is manufactured by applying the urethane foam 54 to the other surface of the sheet base 51.
  • the release paper 53 (FIG. 4C) is peeled off, and the double-sided tape 52 is affixed to the upper surface 42a (see FIG. 2) of the light shielding portion 42. Thereby, the sticking of the low reflection sheet 50 is stuck.
  • the upper and lower wall portions 43 are black-coated on the surface (front surface).
  • the surface of the upper and lower wall portions 43 is rougher than the upper surface 42 a of the light shielding portion 42.
  • the surface roughness Ra of the surface of the upper and lower wall portions 43 is 40 to 50 ⁇ m.
  • the roughness of the surface of the boundary part 44 is rougher than the upper surface 42a of the light shielding part 42 and smoother than the surfaces of the upper and lower wall parts 43.
  • the surface roughness Ra of the surface of the boundary portion 44 is 20 ⁇ m.
  • Examples of a method for forming the surface of the boundary portion 44 to be rougher than the surface of the light shielding portion 42 include methods such as adjusting a mold, applying a chemical, and performing sandblasting. In addition to these methods, any method can be employed.
  • the end of the low reflection sheet 50 reaches the upper end of the boundary 44. This prevents the upper surface 42a of the light shielding part 42 from being exposed.
  • the length L of the boundary portion 44 is desirably 2 mm or more and 5 mm or less. The reason will be described later.
  • a low reflection sheet 50 that suppresses reflection of sunlight is affixed to the upper surface of the light shielding portion 42. Thereby, the reflection of the light shielding part 42 on the projection surface part can be suppressed.
  • the light shielding part 42 exhibits a so-called three-dimensional curved shape in which the curvature continuously changes.
  • the reflection of sunlight can be suppressed evenly over the entire upper surface 42 a of the light shielding part 42.
  • a paint for suppressing reflection is applied to the light shielding portion 42. If it has a three-dimensional shape, it is difficult to uniformly apply to the whole, and there is a possibility that a part where the reflection of sunlight cannot be suppressed partially occurs. If a large amount of paint is applied to prevent this, it takes time to paint.
  • the reflection of sunlight can be suppressed uniformly over the entire upper surface 42a of the light-shielding portion 42, and the manufacturing time of the head-up display device 10 can be shortened. You can also.
  • the surface of the upper and lower wall portions 43 extending in the vertical direction from the light shielding portion 42 is coated to suppress the reflection of sunlight.
  • the upper and lower wall portions 43 extending in the vertical direction are portions that are less likely to be reflected on the projection surface portion. For this reason, even if it is cheap coating compared with the low reflection sheet 50, reflection of the upper and lower wall portions 43 can be sufficiently suppressed.
  • the roughness of the surface of the boundary portion 44 that is the boundary between the light shielding portion 42 and the upper and lower wall portions 43 is rougher than the upper surface 42 a of the light shielding portion 42 and smoother than the surfaces of the upper and lower wall portions 43.
  • the upper surface 42a of the light shielding part 42 is formed smoothly so that the low reflection sheet 50 can be attached.
  • the upper and lower wall portions 43 are roughened by being painted.
  • the head-up display device 110 After completion of the head-up display device 110, it is generally performed to remove dust Du that may adhere to each component.
  • the dust Du is removed, for example, by blowing wind.
  • the low reflection sheet 150 may be peeled off from the upper and lower wall portions 143 due to the wind blown around the surface of the upper and lower wall portions 143.
  • the end portion of the low reflection sheet 150 is located at the smooth boundary portion 144 on the surface, the exposed portion of the boundary portion 144 may be reflected on the projection surface portion.
  • the roughness of the surface of the boundary portion 44 is set to be rougher than the upper surface 42 a of the light shielding portion 42 and smoother than the surfaces of the upper and lower wall portions 43. Thereby, it is possible to suppress the reflection of the boundary portion 44 on the projection surface portion while suppressing the amount of wind that wraps around the back surface of the low reflection sheet 50 and suppressing the peeling of the low reflection sheet 50.
  • the length L of the boundary portion 44 is desirably 2 mm or more and 5 mm or less. If the length L of the boundary portion 44 is less than 2 mm, it is difficult to reliably attach the end portion of the low reflection sheet 50 to the upper portion of the boundary portion 44. In this case, a part of the light shielding part 42 may be exposed, or the end of the low reflection sheet 50 may be attached to the upper part of the upper and lower wall parts 43. If the light-shielding portion 42 that is a smooth surface is exposed, there is a possibility that it will be reflected on the projection surface portion. If the end portion of the low reflection sheet 50 is attached to the upper part of the upper and lower wall portions 43, the low reflection sheet 50 may be peeled off.
  • the boundary portion 44 is more likely to be reflected than the low reflection sheet 50 and the upper and lower wall portions 43. Such a part is desirably as small as possible.
  • the low reflection sheet 50 can be attached at an accurate position, and reflection of the boundary portion 44 can also be suppressed.
  • the head-up display device according to the present invention has been described based on an example mounted on a vehicle, the head-up display device can also be applied to vehicles, work machines, construction machines, and the like other than vehicles. Furthermore, the head-up display device according to the present invention is not limited to the one using the windshield as the projection surface portion, but can be applied to a so-called combiner-integrated head-up display device in which the projection surface portion is integrated.
  • the present invention is not limited to the examples as long as the operations and effects of the present invention are exhibited.
  • the head-up display device of the present invention is suitable for a vehicle.

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  • 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

La présente invention concerne une technologie capable de supprimer la réflexion d'une partie faisant écran contre la lumière. Un dispositif d'affichage (10) tête haute est formé par un dispositif d'émission (20) servant à émettre de la lumière et qui est logé à l'intérieur d'un boîtier (11), le dispositif d'émission (20) étant couvert sur le dessus par une partie (42) faisant écran contre la lumière. Une feuille à faible réflexion (50) destinée à supprimer la réflexion de lumière solaire est fixée à une surface supérieure (42a) de la partie (42) faisant écran contre la lumière. De plus, une partie paroi (43) haut-bas adjacente à la partie (42) faisant écran contre la lumière s'étend dans la direction haut-bas. La surface de la partie paroi (43) haut-bas a été revêtue afin de supprimer la réflexion de lumière solaire. La rugosité de surface d'une partie limite (44), qui constitue la limite entre la partie (42) faisant écran contre la lumière et la partie paroi (43) haut-bas, est supérieure à celle de la surface supérieure de la partie (42) faisant écran contre la lumière, et inférieure à celle de la surface de la partie paroi (43) haut-bas.
PCT/JP2016/066882 2015-06-15 2016-06-07 Dispositif d'affichage tête haute WO2016204021A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2015-119966 2015-06-15
JP2015119966A JP6540253B2 (ja) 2015-06-15 2015-06-15 ヘッドアップディスプレイ装置

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WO2016204021A1 true WO2016204021A1 (fr) 2016-12-22

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2569208A (en) * 2018-07-19 2019-06-12 Envisics Ltd A head-up display
WO2022191270A1 (fr) * 2021-03-12 2022-09-15 日本精機株式会社 Affichage tête haute

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6845987B2 (ja) * 2017-01-23 2021-03-24 日本精機株式会社 ヘッドアップディスプレイ装置
JP7046769B2 (ja) 2018-09-20 2022-04-04 マクセル株式会社 ヘッドアップディスプレイ
CN113302077A (zh) 2019-01-11 2021-08-24 日本精机株式会社 平视显示装置
JP7484726B2 (ja) * 2019-01-24 2024-05-16 日本精機株式会社 ヘッドアップディスプレイ装置
JP7312266B2 (ja) 2019-09-30 2023-07-20 ポリプラスチックス株式会社 艶消し面を有する樹脂成形品及び樹脂成形品に対する艶消し面の形成方法
WO2021085261A1 (fr) * 2019-10-30 2021-05-06 日本精機株式会社 Couvercle pour dispositif d'affichage tête haute et dispositif d'affichage tête haute
DE102021131412B3 (de) 2021-11-30 2023-01-19 Denso Corporation Gehäuse für ein Head-Up-Display, Verfahren zum Herstellen desselben, Form, Head-Up-Display und Fahrzeug

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000039581A (ja) * 1998-07-22 2000-02-08 Asahi Glass Co Ltd 情報表示装置
JP2009067352A (ja) * 2007-09-18 2009-04-02 Nippon Seiki Co Ltd ヘッドアップディスプレイ装置
JP2013086691A (ja) * 2011-10-20 2013-05-13 Nippon Seiki Co Ltd 車両用ヘッドアップディスプレイ装置
JP2015064396A (ja) * 2013-09-24 2015-04-09 日本精機株式会社 車両用表示装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007118474A (ja) * 2005-10-31 2007-05-17 Nippon Zeon Co Ltd 反射防止積層体
JP5520021B2 (ja) * 2009-12-03 2014-06-11 富士紡ホールディングス株式会社 反射抑制シート

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000039581A (ja) * 1998-07-22 2000-02-08 Asahi Glass Co Ltd 情報表示装置
JP2009067352A (ja) * 2007-09-18 2009-04-02 Nippon Seiki Co Ltd ヘッドアップディスプレイ装置
JP2013086691A (ja) * 2011-10-20 2013-05-13 Nippon Seiki Co Ltd 車両用ヘッドアップディスプレイ装置
JP2015064396A (ja) * 2013-09-24 2015-04-09 日本精機株式会社 車両用表示装置

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2569208A (en) * 2018-07-19 2019-06-12 Envisics Ltd A head-up display
GB2569208B (en) * 2018-07-19 2019-12-04 Envisics Ltd A head-up display
US11397324B2 (en) 2018-07-19 2022-07-26 Envisics Ltd Head-up display
WO2022191270A1 (fr) * 2021-03-12 2022-09-15 日本精機株式会社 Affichage tête haute

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JP2017003897A (ja) 2017-01-05
JP6540253B2 (ja) 2019-07-10

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