JP2022056771A - Vehicular display device - Google Patents

Vehicular display device Download PDF

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JP2022056771A
JP2022056771A JP2020164704A JP2020164704A JP2022056771A JP 2022056771 A JP2022056771 A JP 2022056771A JP 2020164704 A JP2020164704 A JP 2020164704A JP 2020164704 A JP2020164704 A JP 2020164704A JP 2022056771 A JP2022056771 A JP 2022056771A
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light
infrared light
vehicle
display
housing
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JP7476747B2 (en
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一成 濱田
Kazunari Hamada
悠樹 高橋
Yuki Takahashi
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Nippon Seiki Co Ltd
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Nippon Seiki Co Ltd
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Abstract

To provide a vehicular display device in which a reflector does not need to transmit infrared light and the existence of imaging means is inconspicuous.SOLUTION: An HUD 1 reflects display light L1 from an indicator unit 9 by a plane mirror 10 and projects the display light onto a front windshield 3, generates a virtual image V by the display light L1 reflected by the front windshield 3 by superimposing on an actual scene transmitting the front windshield 3 and displays the virtual image, irradiates a driver D with infrared light L2 from an infrared light irradiation unit 12, and captures the driver with a camera 13. A light shielding section 14 for shielding visible light is provided at a peripheral edge section of cover glass 7 disposed in an opening 8 formed in a housing 6. The infrared light irradiation unit 12 and the camera 13 are provided corresponding to the light shielding section 14. An infrared light transmission section for transmitting infrared light L2 is provided in a portion to which the infrared light irradiation unit 12 and the camera 13 correspond in the light shielding section 14.SELECTED DRAWING: Figure 1

Description

本発明は、車両のフロントウインドシールドやコンバイナ等に虚像を表示するとともに、利用者を撮像可能なヘッドアップディスプレイ装置等の車両用表示装置に関する。 The present invention relates to a vehicle display device such as a head-up display device capable of displaying a virtual image on a front windshield, a combiner, or the like of a vehicle and capturing an image of a user.

車両のフロントウインドシールドやコンバイナ等の反射透光部材を透過する実景(車両前方の風景)に重ねて、その反射透光部材に反射された表示光により虚像を生成して表示するヘッドアップディスプレイ装置は、車両の運転者等の利用者の視線移動を極力抑えつつ、利用者が所望する情報を虚像により提供することによって、安全で快適な車両運行に寄与する。 A head-up display device that creates and displays a virtual image by the display light reflected by the reflected light-transmitting member, which is superimposed on the actual scene (scenery in front of the vehicle) that passes through the reflected light-transmitting member such as the front windshield and combiner of the vehicle. Contributes to safe and comfortable vehicle operation by providing information desired by the user as a virtual image while suppressing the movement of the line of sight of the user such as the driver of the vehicle as much as possible.

また、ヘッドアップディスプレイ装置には、利用者に赤外光を照射して利用者を撮像し、その撮像画像に基づいて利用者の状態把握に供するものがある。 Further, some head-up display devices irradiate the user with infrared light to image the user, and based on the captured image, the user's state is grasped.

例えば特許文献1に記載のヘッドアップディスプレイ装置は、表示手段から発せられる可視光をコンバイナ部材にて利用者に向けて反射して表示像を結像してなるもので、利用者に向けて赤外線を照射する赤外光照射手段と、表示手段から発せられる可視光をコンバイナ部材に向けて反射し、利用者及びコンバイナ部材にて反射される赤外線を透過するミラー部材と、ミラー部材を透過する赤外線を感受して利用者をそれぞれ異なる方向から撮像する複数の撮像手段と、撮像手段によって撮像された画像に基づいて利用者の目の位置を算出する画像処理手段とを備え、利用者の目の位置を精度良く算出することが可能となっている。 For example, the head-up display device described in Patent Document 1 is formed by reflecting visible light emitted from a display means toward a user by a combiner member to form a display image, and infrared rays are directed toward the user. The infrared light irradiating means for irradiating the light, the mirror member that reflects the visible light emitted from the display means toward the combiner member and transmits the infrared rays reflected by the user and the combiner member, and the infrared rays transmitted through the mirror member. It is provided with a plurality of imaging means for capturing the image of the user from different directions and an image processing means for calculating the position of the user's eyes based on the image captured by the imaging means. It is possible to calculate the position with high accuracy.

特開2008-126984号公報Japanese Unexamined Patent Publication No. 2008-126984

ところで、特許文献1に記載のヘッドアップディスプレイ装置のように、撮像手段を反射鏡(ミラー部材)の裏側(反射鏡に対して利用者及びコンバイナ部材の側と反対側)に設置する場合には、反射鏡が可視光を反射して赤外光を透過させるものでなければならず、その製造コストが高額になるという問題があった。 By the way, when the image pickup means is installed on the back side of the reflecting mirror (mirror member) (on the side opposite to the user and the combiner member side with respect to the reflecting mirror) as in the head-up display device described in Patent Document 1. The reflecting mirror must reflect visible light and transmit infrared light, which causes a problem that the manufacturing cost is high.

そこで、例えば撮像手段を反射鏡の裏側ではない位置に設置しようとすると、ハウジングの外部からハウジングの開口部を通して撮像手段の存在が目立ち、車両用表示装置の商品性が低下するという新たな問題が生じる。 Therefore, for example, if the image pickup means is installed at a position other than the back side of the reflector, the presence of the image pickup means is conspicuous from the outside of the housing through the opening of the housing, and there is a new problem that the commercial value of the vehicle display device is lowered. Occurs.

本発明は、上記の事情に鑑みてなされたもので、反射鏡が赤外光を透過させる必要がなく、撮像手段の存在も目立たない車両用表示装置を提供することを課題としている。 The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a vehicle display device in which a reflecting mirror does not need to transmit infrared light and the presence of an imaging means is inconspicuous.

上記課題を解決するために、本発明は、表示光投影手段からの表示光を反射鏡で反射させて反射透光部材に投影し、前記反射透光部材を透過する実景に重ねて前記反射透光部材に反射された表示光により虚像を生成して表示するとともに、車両の利用者に対し、赤外光照射手段からの赤外光を照射し、前記利用者を撮像手段で撮像する車両用表示装置であって、前記表示光投影手段、前記反射鏡及び前記撮像手段を備えるとともに、前記表示光投影手段、前記反射鏡及び前記撮像手段を収容する筐体と、前記筐体に形成された開口部に配設され、前記表示光及び前記赤外光が通過する透光部材とを備え、前記透光部材の周縁部には、可視光を遮光する遮光部が設けられ、前記撮像手段は、前記遮光部に対応して設けられ、前記遮光部の少なくとも前記撮像手段が対応する部分には、赤外光を透過させる赤外光透過部が設けられていることを特徴とする。 In order to solve the above problems, in the present invention, the display light from the display light projection means is reflected by a reflecting mirror and projected onto the reflected light transmitting member, and the reflected light is superimposed on the actual scene transmitted through the reflected light transmitting member. For vehicles in which a virtual image is generated and displayed by the display light reflected on the optical member, the user of the vehicle is irradiated with infrared light from the infrared light irradiation means, and the user is imaged by the image pickup means. The display device includes the display light projection means, the reflector, and the image pickup means, and is formed in the housing and a housing for accommodating the display light projection means, the reflector, and the image pickup means. The image pickup means is provided with a light-transmitting member provided in the opening and through which the display light and the infrared light pass, and a light-shielding portion for blocking visible light is provided on the peripheral edge of the light-transmitting member. It is characterized in that an infrared light transmitting portion is provided corresponding to the light-shielding portion, and at least a portion of the light-shielding portion corresponding to the image pickup means is provided with an infrared light transmitting portion that transmits infrared light.

前記筐体は、前記赤外光照射手段を収容し、前記赤外光照射手段は、前記遮光部に対向して設けられ、前記遮光部の前記赤外光照射手段が対向する部分には、赤外光を透過させる赤外光透過部が設けられてもよい。このとき、前記撮像手段は、前記筐体において前記車両の車幅方向一端側に設けられ、前記赤外光照射手段は、前記筐体において前記車両の車幅方向他端側に設けられてもよい。 The housing accommodates the infrared light irradiating means, the infrared light irradiating means is provided facing the light-shielding portion, and the portion of the light-shielding portion facing the infrared light irradiating means is provided. An infrared light transmitting portion that transmits infrared light may be provided. At this time, even if the imaging means is provided on one end side of the vehicle in the vehicle width direction in the housing, and the infrared light irradiation means is provided on the other end side of the vehicle in the vehicle width direction in the housing. good.

あるいは、本発明は、表示光投影手段からの表示光を反射鏡で反射させて反射透光部材に投影し、前記反射透光部材を透過する実景に重ねて前記反射透光部材に反射された表示光により虚像を生成して表示するとともに、車両の利用者に対し、赤外光照射手段からの赤外光を照射し、前記利用者を撮像手段で撮像する車両用表示装置であって、前記表示光投影手段、前記反射鏡及び前記撮像手段を備えるとともに、前記表示光投影手段、前記反射鏡及び前記撮像手段を収容する筐体と、前記筐体に形成された開口部に配設され、前記表示光及び前記赤外光が通過する透光部材とを備え、前記透光部材の周縁部には、可視光を遮光する遮光部及び可視光を遮光しない透光部が設けられ、前記撮像手段は、前記透光部に対応して設けられ、前記撮像手段と前記透光部との間には、可視光を遮光して赤外光を透過させる遮蔽部材が設けられていることを特徴とする。 Alternatively, in the present invention, the display light from the display light projecting means is reflected by a reflecting mirror and projected onto the reflected translucent member, and is superimposed on the actual scene transmitted through the reflected transmissive member and reflected by the reflected transmissive member. It is a display device for vehicles that generates and displays a virtual image by the display light, irradiates the user of the vehicle with infrared light from the infrared light irradiating means, and images the user with the imaging means. It is provided with the display light projection means, the reflector and the image pickup means, and is arranged in a housing for accommodating the display light projection means, the reflector and the image pickup means, and an opening formed in the housing. A translucent member through which the display light and the infrared light pass is provided, and a light-shielding portion that blocks visible light and a translucent portion that does not block visible light are provided on the peripheral edge of the translucent member. The image pickup means is provided corresponding to the translucent portion, and a shielding member for blocking visible light and transmitting infrared light is provided between the image pickup means and the translucent portion. It is a feature.

前記筐体は、前記赤外光照射手段を収容し、前記赤外光照射手段は、前記透光部に対向して設けられ、前記赤外光照射手段と前記透光部との間には、可視光を遮光して赤外光を透過させる遮蔽部材が設けられてもよい。このとき、前記赤外光照射手段は、前記筐体において前記車両の車幅方向一端側に設けられ、前記撮像手段は、前記筐体において前記車両の車幅方向他端側に設けられてもよい。 The housing accommodates the infrared light irradiating means, and the infrared light irradiating means is provided facing the translucent portion, and is provided between the infrared light irradiating means and the translucent portion. , A shielding member that shields visible light and transmits infrared light may be provided. At this time, even if the infrared light irradiation means is provided on one end side of the vehicle in the vehicle width direction in the housing, and the imaging means is provided on the other end side of the vehicle in the vehicle width direction in the housing. good.

前記遮蔽部材は、前記透光部と略平行に設けられても、また、前記筐体に保持されてもよく、前記遮光部には、前記遮蔽部材と重なり合い、前記透光部材の外側から内側に向けて色が薄くなる重合部が設けられてもよい。 The shielding member may be provided substantially parallel to the translucent portion, or may be held in the housing, and the shielding member overlaps with the shielding member in the light shielding portion from the outside to the inside of the translucent member. A polymerization portion may be provided in which the color becomes lighter toward the surface.

前記遮光部は、前記透光部材に黒色の印刷層が形成されて設けられてもよい。 The light-shielding portion may be provided with a black print layer formed on the translucent member.

本発明によれば、車両用表示装置において反射鏡が赤外光を透過させる必要がなく、撮像手段の存在も目立たないという効果を奏する。 According to the present invention, it is not necessary for the reflecting mirror to transmit infrared light in the vehicle display device, and the presence of the image pickup means is inconspicuous.

発明を実施するための形態に係るヘッドアップディスプレイ装置が設けられた車両を示す説明図である。It is explanatory drawing which shows the vehicle provided with the head-up display device which concerns on embodiment for carrying out an invention. 図1のヘッドアップディスプレイ装置の外観を示す説明図である。It is explanatory drawing which shows the appearance of the head-up display apparatus of FIG. 図1のヘッドアップディスプレイ装置を平面視で示す説明図である。It is explanatory drawing which shows the head-up display device of FIG. 1 in a plan view. 発明を実施するための形態に係るヘッドアップディスプレイ装置の他の例を示す説明図である。It is explanatory drawing which shows the other example of the head-up display apparatus which concerns on embodiment for carrying out an invention. 図4のヘッドアップディスプレイ装置の内部構造を示す説明図である。It is explanatory drawing which shows the internal structure of the head-up display apparatus of FIG. 発明を実施するための形態に係るヘッドアップディスプレイ装置のさらに他の例を示す説明図である。It is explanatory drawing which shows still another example of the head-up display apparatus which concerns on embodiment for carrying out an invention. 図6のヘッドアップディスプレイ装置を平面視で示す説明図である。It is explanatory drawing which shows the head-up display device of FIG. 6 in a plan view.

本発明を実施するための形態について、図面に基づいて説明する。 A mode for carrying out the present invention will be described with reference to the drawings.

図1に示すように、本実施の形態に係る車両用表示装置としてのヘッドアップディスプレイ装置(HUD)1は、車両2のフロントウインドシールド3の下方にあるインストルメントパネル4の内部に設けられ、フロントウインドシールド3の一部に可視光である表示光Lを投影する。表示光Lは、フロントウインドシールド3に反射されて虚像Vを生成し、ステアリングホイール5の後方の図示を略す運転席に座る運転者Dにフロントウインドシールド3を透過する実景に重ねて虚像Vを視認させる。 As shown in FIG. 1, the head-up display device (HUD) 1 as a vehicle display device according to the present embodiment is provided inside an instrument panel 4 below the front windshield 3 of the vehicle 2. The display light L1 which is visible light is projected onto a part of the front windshield 3. The display light L 1 is reflected by the front windshield 3 to generate a virtual image V, and the virtual image V is superimposed on the actual view transmitted through the front windshield 3 to the driver D sitting in the driver's seat, which is not shown behind the steering wheel 5. To be visually recognized.

また、HUD1は、運転者Dの状態をモニターするDMS(ドライバーモニタリングシステム)の機能を持ち、運転者Dに赤外光Lを照射して運転者Dを撮像する。 Further, the HUD 1 has a DMS (driver monitoring system) function for monitoring the state of the driver D, and irradiates the driver D with infrared light L2 to image the driver D.

詳細には、HUD1は、黒色のABS樹脂等により成形されて外光の侵入が防止されたハウジング6に覆われて外部と区画され、ハウジング6にはポリカーボネート等からなる透明なカバーガラス(透明部材)7が取り付けられた開口部8が形成されている。ハウジング6の内部には、表示器ユニット9と、平面鏡10と、凹面鏡11と、赤外光照射ユニット12と、カメラ13とが保持・収容されている。 Specifically, the HUD 1 is covered with a housing 6 molded from black ABS resin or the like to prevent the intrusion of external light and is partitioned from the outside, and the housing 6 is a transparent cover glass (transparent member) made of polycarbonate or the like. ) 7 is attached to the opening 8. Inside the housing 6, a display unit 9, a plane mirror 10, a concave mirror 11, an infrared light irradiation unit 12, and a camera 13 are held and housed.

開口部8に配設されるカバーガラス7は、図2に示すように、下方に凸に湾曲した四辺形板状を呈し、その周縁部(四辺の周辺部)には全周にわたって可視光を遮光する不可視部としての遮光部14が設けられている。遮光部14は、ポリカーボネート等の透明な基材に対し、当該基材の裏面(または表面)に黒色の印刷層が形成されてなる。 As shown in FIG. 2, the cover glass 7 arranged in the opening 8 has a quadrilateral plate shape that is curved downward, and visible light is emitted to the peripheral portion (peripheral portion of the four sides) of the cover glass 7 over the entire circumference. A light-shielding portion 14 is provided as an invisible portion that shields light from light. The light-shielding portion 14 has a transparent base material such as polycarbonate, and a black print layer is formed on the back surface (or front surface) of the base material.

表示器ユニット9は、光源及び液晶パネル等からなる表示器15が設けられ、表示器15から可視光である映像光(表示光L)を投影表示する。平面鏡10は、平面部分を有するように成形されたガラスにアルミニウム等の金属や誘電体多層膜を蒸着してなり、可視光を単純に反射する。凹面鏡11は、凹面部分を有するように成形されたポリカーボネート等の樹脂にアルミニウム等の金属を蒸着してなり、可視光を拡大して反射する。 The display unit 9 is provided with a display 15 including a light source and a liquid crystal panel, and projects and displays video light (display light L1) which is visible light from the display unit 15. The plane mirror 10 is formed by depositing a metal such as aluminum or a dielectric multilayer film on glass formed so as to have a flat portion, and simply reflects visible light. The concave mirror 11 is formed by depositing a metal such as aluminum on a resin such as polycarbonate molded so as to have a concave portion, and magnifies and reflects visible light.

赤外光照射ユニット12は、図3に示すように、ハウジング6においてカバーガラス7の下方で遮光部14に対向(対応)するように、車両2の車幅方向中央側に設けられている。遮光部14の赤外光照射ユニット12が対向(対応)する部分には、赤外光を透過させる赤外光透過部16が設けられ(遮光部14のうち、赤外光透過部16の部分は、可視光を遮蔽して赤外光を透過させる黒色の印刷層からなり、それ以外の部分は、可視光及び赤外光を遮蔽する黒色の印刷層からなる。)、赤外光照射ユニット12は、発光ダイオードからなる光源が発する赤外光(近赤外線)を赤外光透過部16を通してフロントウインドシールド3に向けて照射する。 As shown in FIG. 3, the infrared light irradiation unit 12 is provided on the center side of the vehicle 2 in the vehicle width direction so as to face (correspond to) the light-shielding portion 14 below the cover glass 7 in the housing 6. An infrared light transmitting portion 16 for transmitting infrared light is provided in a portion of the light shielding portion 14 facing (corresponding to) the infrared light irradiation unit 12 (a portion of the light shielding portion 14 of the infrared light transmitting portion 16). Is composed of a black printing layer that shields visible light and transmits infrared light, and the other portion is composed of a black printing layer that shields visible light and infrared light), and an infrared light irradiation unit. 12 irradiates infrared light (near infrared light) emitted by a light source made of a light emitting diode toward the front window shield 3 through the infrared light transmitting portion 16.

一方、カメラ13は、ハウジング6においてカバーガラス7の下方で赤外光透過部16に対向(対応)するように、車両2の車幅方向中央側、かつ、赤外光照射ユニット12の前方に設けられ、赤外照射ユニット12から照射される波長帯の赤外光に感度を有する撮像素子、及び、赤外光を透過してその撮像素子に結像させ得るレンズを備えて近赤外線画像を撮影する。また、ここでのカメラ13は遮光部14に対向(対応)して設けられている。 On the other hand, the camera 13 is located on the center side in the vehicle width direction of the vehicle 2 and in front of the infrared light irradiation unit 12 so as to face (correspond to) the infrared light transmitting portion 16 below the cover glass 7 in the housing 6. A near-infrared image is provided with an image pickup element that is provided and has sensitivity to infrared light in the wavelength band emitted from the infrared irradiation unit 12, and a lens that can transmit infrared light and form an image on the image pickup element. Take a picture. Further, the camera 13 here is provided so as to face (correspond to) the light-shielding portion 14.

赤外光照射ユニット12及びカメラ13は、いずれも、平面鏡10や凹面鏡11の裏側(平面鏡10又は凹面鏡11に対してフロントウインドシールド3の側と反対側)でなく、かつ、平面鏡10からフロントウインドシールド3までの表示光Lの光路と重ならない位置に設けられている。なお、本例の場合、ここでの詳細図示は省略するが、ハウジング6は、車幅方向と略直交(交差)する一対の周壁部を有しており、これら一対の周壁部のうち車両を左右に2等分する仮想中心ラインに近い側に位置する一周壁部(一方の周壁部)のやや内側となるハウジング6の空所に赤外光照射ユニット12及びカメラ13を設けた構成としている。なお、ここでのハウジング6は、4つの周壁部を備え、図1で図示された概ね車幅方向に沿う2つの周壁部は、前記一対の周壁部の各々の端部同士を繋ぐ立壁として構成される。 Neither the infrared light irradiation unit 12 nor the camera 13 is on the back side of the plane mirror 10 or the concave mirror 11 (the side opposite to the side of the front window shield 3 with respect to the plane mirror 10 or the concave mirror 11), and the front window is from the plane mirror 10. It is provided at a position that does not overlap with the optical path of the display light L1 up to the shield 3 . In the case of this example, although detailed illustration is omitted here, the housing 6 has a pair of peripheral wall portions that are substantially orthogonal (intersect) with the vehicle width direction, and the vehicle is included in the pair of peripheral wall portions. The infrared light irradiation unit 12 and the camera 13 are provided in a vacant space of the housing 6 which is slightly inside the one peripheral wall portion (one peripheral wall portion) located on the side close to the virtual center line which is divided into two equal parts to the left and right. .. The housing 6 here includes four peripheral wall portions, and the two peripheral wall portions substantially along the vehicle width direction shown in FIG. 1 are configured as a vertical wall connecting the ends of the pair of peripheral wall portions. Will be done.

HUD1において、表示器ユニット9からの表示光Lは、平面鏡10で反射され、次いで、凹面鏡11で拡大して反射され、カバーガラス7の遮光部14に囲まれた透明な中央部(透光領域)17を通過してフロントウインドシールド3に投影される。フロントウインドシールド3に投影された表示光Lは、運転者Dの側に拡大して反射され、虚像Vを生成してフロントウインドシールド3を透過する実景に重ねて運転者Dに表示する。 In the HUD 1, the display light L 1 from the display unit 9 is reflected by the plane mirror 10, then magnified and reflected by the concave mirror 11, and is a transparent central portion (translucent) surrounded by the light-shielding portion 14 of the cover glass 7. Area) 17 is passed and projected onto the front windshield 3. The display light L1 projected on the front windshield 3 is enlarged and reflected toward the driver D, generates a virtual image V, and is displayed on the driver D by superimposing it on the actual scene transmitted through the front windshield 3.

一方、赤外光照射ユニット12からの赤外光Lは、カバーガラス7の遮光部14の赤外光透過部16を通過してフロントウインドシールド3に投影され、フロントウインドシールド3で運転者Dの側に反射されて運転者Dを照射する。そして、運転者Dに反射されると赤外光Lの一部は逆の経路を辿り、赤外光透過部16を通過してカメラ13に入射した赤外光Lにより運転者Dが撮像される。この撮像は、虚像Vの表示中、定期的又は不定期的に行われ、その撮像画像に基づいて運転者Dのモニタリングが行われる。 On the other hand, the infrared light L 2 from the infrared light irradiation unit 12 passes through the infrared light transmitting portion 16 of the light shielding portion 14 of the cover glass 7 and is projected onto the front windshield 3, and the driver is projected by the front windshield 3. It is reflected to the side of D and irradiates the driver D. Then, when reflected by the driver D, a part of the infrared light L 2 follows the reverse path, and the infrared light L 2 that has passed through the infrared light transmitting portion 16 and is incident on the camera 13 causes the driver D to follow the opposite path. It is imaged. This imaging is performed periodically or irregularly while the virtual image V is displayed, and the driver D is monitored based on the captured image.

本実施の形態に係るHUD1は、表示器ユニット9からの表示光Lを平面鏡10及び凹面鏡11で反射させてフロントウインドシールド3に投影し、フロントウインドシールド3を透過する実景に重ねてフロントウインドシールド3に反射された表示光Lにより虚像Vを生成して表示するとともに、車両2の運転者Dに対し、赤外光照射ユニット12からの赤外光Lを照射し、運転者Dをカメラ13で撮像するもので、表示器ユニット9、平面鏡10、凹面鏡11及びカメラ13を備えるとともに、表示器ユニット9、平面鏡10、凹面鏡11及びカメラ13を収容するハウジング6と、ハウジング6に形成された開口部8に配設され、表示光L及び赤外光Lが通過するカバーガラス7とを備え、カバーガラス7の周縁部には、可視光を遮光する遮光部14が設けられ、カメラ13(赤外光照射ユニット12及びカメラ13)は、遮光部14に対向(対応)して設けられ、遮光部14のカメラ13(赤外光照射ユニット12及びカメラ13)が対向(対応)する部分には、赤外光Lを透過させる赤外光透過部16が設けられているので、カバーガラス7の周縁部に対向したカメラ13が受光する赤外光Lについて、その光路上にない平面鏡10及び凹面鏡11は、赤外光Lを透過させる必要がなく、製造コストを抑制することができる。 In the HUD 1 according to the present embodiment, the display light L1 from the display unit 9 is reflected by the plane mirror 10 and the concave mirror 11 and projected onto the front windshield 3, and the front window is superimposed on the actual scene transmitted through the front windshield 3. A virtual image V is generated and displayed by the display light L1 reflected on the shield 3, and the driver D of the vehicle 2 is irradiated with the infrared light L2 from the infrared light irradiation unit 12, and the driver D is irradiated with the infrared light L2. The image is taken by the camera 13, and the display unit 9, the plane mirror 10, the concave mirror 11, and the camera 13 are provided, and the display unit 9, the plane mirror 10, the concave mirror 11, and the housing 6 accommodating the camera 13 are formed in the housing 6. A cover glass 7 is provided in the opening 8 through which the display light L1 and the infrared light L2 pass, and a light - shielding portion 14 for blocking visible light is provided on the peripheral edge of the cover glass 7. The camera 13 (infrared light irradiation unit 12 and camera 13) is provided facing (corresponding to) the light-shielding unit 14, and the camera 13 (infrared light irradiation unit 12 and camera 13) of the light-shielding unit 14 faces (corresponds to). ) Is provided with an infrared light transmitting portion 16 that transmits the infrared light L 2. Therefore, the light of the infrared light L 2 received by the camera 13 facing the peripheral portion of the cover glass 7 is provided. The plane mirror 10 and the concave mirror 11 that are not on the road do not need to transmit the infrared light L2, and the manufacturing cost can be suppressed.

また、HUD1の外観上、カメラ13(赤外光照射ユニット12及びカメラ13)は可視光を遮光する遮光部14に覆われるので、カメラ13(赤外光照射ユニット12及びカメラ13)の存在も目立たない。 Further, since the camera 13 (infrared light irradiation unit 12 and camera 13) is covered with a light-shielding portion 14 that blocks visible light due to the appearance of the HUD 1, the presence of the camera 13 (infrared light irradiation unit 12 and camera 13) is also present. Inconspicuous.

遮光部14は、カバーガラス7に黒色の印刷層が形成されて設けられているので、遮光部14を備えるカバーガラス7の製造が容易であり、カメラ13は、ハウジング6において車両2の車幅方向中央側に設けられているので、車両2の運転席側のサイドウインドからの外光が入り難く、カメラ13に強い外光が入って運転者Dのモニターに支障を来たす可能性を低減させることができる。 Since the light-shielding portion 14 is provided with a black print layer formed on the cover glass 7, it is easy to manufacture the cover glass 7 provided with the light-shielding portion 14, and the camera 13 is the vehicle width of the vehicle 2 in the housing 6. Since it is provided on the center side of the direction, it is difficult for outside light to enter from the side window on the driver's side of the vehicle 2, and the possibility that strong outside light enters the camera 13 and interferes with the driver D's monitor is reduced. be able to.

図4は、本実施の形態に係る他のHUD18を示す。HUD18の各部のうちHUD1と同様な部分には、HUD1と同一の符号を付し、説明を省略する。 FIG. 4 shows another HUD 18 according to the present embodiment. Of the parts of the HUD 18, the parts similar to the HUD 1 are designated by the same reference numerals as those of the HUD 1, and the description thereof will be omitted.

HUD18において、カバーガラス7の周縁部には、可視光を遮光する遮光部14及び可視光を遮光しない透光部19が設けられている(遮光部14の一部(HUD1の赤外光透過部16の部分)を抜くように透光部19が設けられている。)。赤外光照射ユニット12及びカメラ13は、その透光部19に対向(対応)して設けられ、赤外光照射ユニット12及びカメラ13と透光部19との間には、図5に示すように、可視光を遮光して赤外光を透過させる不可視部材としての遮蔽片20が設けられている(図5において、αは赤外光照射ユニット12の照射範囲、βはカメラ13の画角を示す。)。 In the HUD 18, a light-shielding portion 14 that blocks visible light and a light-transmitting portion 19 that does not block visible light are provided on the peripheral edge of the cover glass 7 (a part of the light-shielding portion 14 (infrared light transmitting portion of HUD1). A translucent portion 19 is provided so as to pull out the portion (16).) The infrared light irradiation unit 12 and the camera 13 are provided facing (corresponding to) the translucent portion 19 thereof, and are shown in FIG. 5 between the infrared light irradiation unit 12 and the camera 13 and the translucent portion 19. As described above, a shielding piece 20 is provided as an invisible member that shields visible light and transmits infrared light (in FIG. 5, α is the irradiation range of the infrared light irradiation unit 12, and β is an image of the camera 13. Shows the corner.).

詳しくは、カバーガラス7は、ハウジング6の表面近くに形成された凹部21に両面テープ22で貼着され、遮蔽片20は、ハウジング6において凹部21の内側に形成された凹部23に両面テープ24で貼着されて保持されている。遮蔽片20は、例えば黒色樹脂製のシート材等からなり、その形状及び配置から、透光部19と略平行に設けられている。なお、ここでの詳細図示は省略するが、カバーガラス7は、その周縁部分が両面テープ22と対向している凹部21の載置部に載置(保持)され、遮蔽片20は、その周縁部分が両面テープ24と対向している凹部23の載置部に載置(保持)され、凹部23は凹部21よりも一段低い位置に設けられる構成としている。 Specifically, the cover glass 7 is attached to the recess 21 formed near the surface of the housing 6 with double-sided tape 22, and the shielding piece 20 is attached to the recess 23 formed inside the recess 21 in the housing 6 with the double-sided tape 24. It is attached and held by. The shielding piece 20 is made of, for example, a sheet material made of black resin, and is provided substantially parallel to the translucent portion 19 due to its shape and arrangement. Although detailed illustration is omitted here, the cover glass 7 is placed (held) in the mounting portion of the recess 21 whose peripheral edge portion faces the double-sided tape 22, and the shielding piece 20 is the peripheral edge thereof. The portion is placed (held) in the mounting portion of the recess 23 facing the double-sided tape 24, and the recess 23 is provided at a position one step lower than the recess 21.

遮光部14には、遮蔽片20と重なり合い、カバーガラス7の外側から内側に向けて(図5においては、左右外側(両面テープ22の側)から内側(透光部19の側)に向けて)色が薄くなる重合部25が設けられている。重合部25は、例えば、カバーガラス7の外側から内側に向けて黒色をグラデーションのように濃淡を変化させて形成してもよいし、カバーガラス7の外側から内側に向けて黒色のドットの密度が低くなるように網点印刷で形成してもよい。 The light-shielding portion 14 overlaps with the shielding piece 20 and faces from the outside to the inside of the cover glass 7 (in FIG. 5, from the left and right outside (double-sided tape 22 side) to the inside (translucent portion 19 side). ) A polymerization section 25 having a lighter color is provided. The overlapping portion 25 may be formed, for example, by changing the shade of black from the outside to the inside of the cover glass 7 like a gradation, or the density of black dots from the outside to the inside of the cover glass 7. It may be formed by halftone dot printing so that

このHUD18は、表示器ユニット9からの表示光Lを平面鏡10及び凹面鏡11で反射させてフロントウインドシールド3に投影し、フロントウインドシールド3を透過する実景に重ねてフロントウインドシールド3に反射された表示光Lにより虚像Vを生成して表示するとともに、車両2の運転者Dに対し、赤外光照射ユニット12からの赤外光Lを照射し、運転者Dをカメラ13で撮像するもので、表示器ユニット9、平面鏡10、凹面鏡11及びカメラ13を備えるとともに、表示器ユニット9、平面鏡10、凹面鏡11及びカメラ13を収容するハウジング6と、ハウジング6に形成された開口部8に配設され、表示光L及び赤外光Lが通過するカバーガラス7とを備え、カバーガラス7の周縁部には、可視光を遮光する遮光部14及び可視光を遮光しない透光部19が設けられ、カメラ13(赤外光照射ユニット12及びカメラ13)は、透光部19に対向(対応)して設けられ、カメラ13(赤外光照射ユニット12及びカメラ13)と透光部19との間には、可視光を遮光して赤外光を透過させる遮蔽片20が設けられているので、カバーガラス7の周縁部に対向(対応)して設けられるカメラ13が受光する赤外光Lについて、その光路上にない平面鏡10及び凹面鏡11は、赤外光Lを透過させる必要がなく、製造コストを抑制することができる。 The HUD 18 reflects the display light L1 from the display unit 9 by the plane mirror 10 and the concave mirror 11 and projects it on the front windshield 3, and is reflected on the front windshield 3 so as to be superimposed on the actual scene transmitted through the front windshield 3. A virtual image V is generated and displayed by the display light L 1 , and the driver D of the vehicle 2 is irradiated with the infrared light L 2 from the infrared light irradiation unit 12, and the driver D is imaged by the camera 13. A housing 6 including a display unit 9, a plane mirror 10, a concave mirror 11 and a camera 13 and accommodating the display unit 9, a plane mirror 10, a concave mirror 11 and a camera 13, and an opening 8 formed in the housing 6 are provided. A cover glass 7 through which the display light L1 and the infrared light L2 pass is provided, and a light-shielding portion 14 that blocks visible light and a translucent light that does not block visible light are provided on the peripheral edge of the cover glass 7. A unit 19 is provided, and the camera 13 (infrared light irradiation unit 12 and camera 13) is provided facing (corresponding to) the translucent unit 19 and is transparent to the camera 13 (infrared light irradiation unit 12 and camera 13). Since a shielding piece 20 that shields visible light and transmits infrared light is provided between the light unit 19 and the light unit 19, the camera 13 provided facing (corresponding to) the peripheral edge portion of the cover glass 7 receives light. The plane mirror 10 and the concave mirror 11 that are not on the optical path of the infrared light L 2 do not need to transmit the infrared light L 2 , and the manufacturing cost can be suppressed.

また、HUD18の外観上は、カメラ13(赤外光照射ユニット12及びカメラ13)が可視光を遮光する遮蔽片20に覆われるので、カメラ13(赤外光照射ユニット12及びカメラ13)の存在も目立たない。特に、遮蔽片20が黒色の樹脂製であれば、可視光を遮蔽し赤外光を透過する印刷よりも赤外光の透過率が高く可視光の透過率が低いので、カメラ13(赤外光照射ユニット12及びカメラ13)の高い隠蔽性とカメラ13による効果的な撮影とを両立させることができる。 Further, in terms of the appearance of the HUD 18, the camera 13 (infrared light irradiation unit 12 and camera 13) is covered with a shielding piece 20 that blocks visible light, so that the camera 13 (infrared light irradiation unit 12 and camera 13) is present. Is also inconspicuous. In particular, if the shielding piece 20 is made of a black resin, the transmittance of infrared light is higher and the transmission rate of visible light is lower than that of printing that shields visible light and transmits infrared light. Therefore, the camera 13 (infrared). It is possible to achieve both the high concealment of the light irradiation unit 12 and the camera 13) and the effective shooting by the camera 13.

遮蔽片20は、透光部19と略平行に設けられている。一方、一般に、カバーガラス7は、その表面で反射した太陽光が運転者Dに向かわないように設計されているので、透光部19と略平行な遮蔽片20で反射された太陽光も、運転者Dに向かわないようにすることができる。ここでは、遮蔽片20は、ハウジング6に載置(保持)されているので、遮蔽片20をカバーガラス7に固定すると生じるおそれがあるカバーガラス7の変形を予防することができる。 The shielding piece 20 is provided substantially parallel to the translucent portion 19. On the other hand, in general, the cover glass 7 is designed so that the sunlight reflected on the surface thereof does not face the driver D, so that the sunlight reflected by the shielding piece 20 substantially parallel to the translucent portion 19 can also be generated. It is possible to prevent the driver D from going. Here, since the shielding piece 20 is placed (held) on the housing 6, it is possible to prevent deformation of the cover glass 7 that may occur when the shielding piece 20 is fixed to the cover glass 7.

さらに、遮光部14には、遮蔽片20と重なり合い、カバーガラス7の外側から内側に向けて色が薄くなる重合部25が設けられているので、部材や設置位置が異なる遮光部14と遮蔽片20との境界をぼかして目立たなくすることができ、HUD18の商品性を向上させることができる。 Further, since the light-shielding portion 14 is provided with the overlapping portion 25 that overlaps with the shielding piece 20 and whose color becomes lighter from the outside to the inside of the cover glass 7, the light-shielding portion 14 and the shielding piece having different members and installation positions are provided. The boundary with 20 can be blurred to make it inconspicuous, and the commercial value of HUD 18 can be improved.

図6及び図7は、本実施の形態に係るさらに他のHUD26を示す。HUD26の各部のうちHUD1と同様な部分には、HUD1と同一の符号を付し、説明を省略する。 6 and 7 show still another HUD26 according to this embodiment. Of the parts of the HUD 26, the parts similar to the HUD 1 are designated by the same reference numerals as those of the HUD 1, and the description thereof will be omitted.

HUD26において、カバーガラス7の周縁部には、可視光を遮光する遮光部14が設けられ、遮光部14には、車両2の車幅方向一端側(外側)及び他端側(中央側)に赤外光Lを透過させる赤外光透過部16が設けられている。そして、カメラ13は、車両2の車幅方向一端側に設けられた赤外光透過部16に対向し、赤外光照射ユニット12は、車両2の車幅方向他端側に設けられた赤外光透過部16に対向している。 In the HUD 26, a light-shielding portion 14 that shields visible light is provided on the peripheral edge of the cover glass 7, and the light-shielding portion 14 is provided on one end side (outside) and the other end side (center side) of the vehicle 2 in the vehicle width direction. An infrared light transmitting portion 16 for transmitting the infrared light L 2 is provided. The camera 13 faces the infrared light transmitting portion 16 provided on one end side of the vehicle width direction of the vehicle 2, and the infrared light irradiation unit 12 is provided on the other end side of the vehicle width direction of the vehicle 2. It faces the external light transmitting portion 16.

このHUD26によれば、カメラ13は、ハウジング6において車両2の車幅方向一端側に設けられ、赤外光照射ユニット12は、ハウジング6において車両2の車幅方向他端側に設けられているので、赤外光照射ユニット12から出射してカバーガラス7で反射された赤外光Lは、車幅方向の反対側にあるカメラ13に入りにくく、撮像画像において照明光による迷光の発生を抑制することができる。 According to the HUD 26, the camera 13 is provided in the housing 6 on one end side of the vehicle 2 in the vehicle width direction, and the infrared light irradiation unit 12 is provided in the housing 6 on the other end side of the vehicle 2 in the vehicle width direction. Therefore, the infrared light L 2 emitted from the infrared light irradiation unit 12 and reflected by the cover glass 7 is difficult to enter the camera 13 on the opposite side in the vehicle width direction, and stray light is generated by the illumination light in the captured image. It can be suppressed.

以上、本発明を実施するための形態について例示したが、本発明の実施形態は上述したものに限られず、発明の趣旨を逸脱しない範囲で適宜変更等してもよい。 Although the embodiments for carrying out the present invention have been illustrated above, the embodiments of the present invention are not limited to those described above, and may be appropriately modified without departing from the spirit of the invention.

例えば、上記実施の形態では、車両のフロントウインドシールドを反射透光部材として表示光を投影したが、フロントウインドシールドに代えてコンバイナを用いてもよく、カメラがハウジングに収容されていれば、赤外光照射ユニットはハウジングの外部(例えば車両のハンドルの奥にあるステアリングコラム上)に設けてもよい。さらには、不可視部14の全体(全てのエリア)を赤外光透過部16としてもよい。要は、不可視部14の少なくともカメラ13が対向(対応)する部分には、赤外光を透過させる赤外光透過部16が設けられていればよい。 For example, in the above embodiment, the front windshield of the vehicle is used as a reflective light-transmitting member to project the display light, but a combiner may be used instead of the front windshield, and if the camera is housed in the housing, it is red. The external light irradiation unit may be provided outside the housing (for example, on the steering column behind the steering wheel of the vehicle). Further, the entire invisible portion 14 (all areas) may be used as the infrared light transmitting portion 16. In short, an infrared light transmitting portion 16 for transmitting infrared light may be provided at least in a portion of the invisible portion 14 facing (corresponding to) the camera 13.

また、遮光部は、印刷によらずに塗装や多色成型その他の方法により形成してもよく、カバーガラスや遮蔽片は、溶着その他の方法によりハウジングに固定してもよく、遮蔽片は、印刷により着色してもよいし、カバーガラスにオプティカルボンディング等の方法により接着してもよい。カバーガラスは、透明ではなく暗色(半透過性)の部材により構成されていてもよい。 Further, the light-shielding portion may be formed by painting, multicolor molding or other methods without printing, the cover glass or the shielding piece may be fixed to the housing by welding or other methods, and the shielding piece may be fixed to the housing. It may be colored by printing, or may be adhered to the cover glass by a method such as opticarbond. The cover glass may be composed of a dark-colored (semi-transparent) member instead of transparent.

さらに、HUD26では複数の赤外光透過部16を設け、各赤外光透過部16に対向するようにカメラ13及び赤外光照射ユニット12を離して配置したが、その配置も車幅方向の一端側と他端側に限られるものではなく、赤外光透過部16の一方又は全てをHUD18の透光部19及び遮蔽片20の組み合わせに変更してもかまわない。 Further, in the HUD 26, a plurality of infrared light transmitting units 16 are provided, and the camera 13 and the infrared light irradiation unit 12 are arranged so as to face each infrared light transmitting unit 16, but the arrangement is also in the vehicle width direction. It is not limited to one end side and the other end side, and one or all of the infrared light transmitting portion 16 may be changed to a combination of the translucent portion 19 of the HUD 18 and the shielding piece 20.

1 ヘッドアップディスプレイ装置(車両用表示装置)
2 車両
3 フロントウインドシールド(反射透光部材)
6 筐体(ハウジング)
7 カバーガラス(透光部材)
9 表示光投影手段(表示器ユニット)
10 平面鏡(反射鏡)
11 凹面鏡(反射鏡)
12 赤外光照射ユニット(赤外光照射手段)
13 カメラ(撮像手段)
14 遮光部
16 赤外光透過部
19 透光部
20 遮蔽片(遮蔽部材)
25 重合部
D 運転者(利用者)
表示光
赤外光
V 虚像
1 Head-up display device (vehicle display device)
2 Vehicle 3 Front windshield (reflection and translucent member)
6 Housing
7 Cover glass (translucent member)
9 Display light projection means (display unit)
10 Plane mirror (reflector)
11 Concave mirror (reflector)
12 Infrared light irradiation unit (infrared light irradiation means)
13 Camera (imaging means)
14 Light-shielding part 16 Infrared light transmission part 19 Light-transmitting part 20 Shielding piece (shielding member)
25 Polymerization section D Driver (user)
L 1 Display light L 2 Infrared light V Virtual image

Claims (9)

表示光投影手段からの表示光を反射鏡で反射させて反射透光部材に投影し、前記反射透光部材を透過する実景に重ねて前記反射透光部材に反射された表示光により虚像を生成して表示するとともに、車両の利用者に対し、赤外光照射手段からの赤外光を照射し、前記利用者を撮像手段で撮像する車両用表示装置であって、
前記表示光投影手段、前記反射鏡及び前記撮像手段を備えるとともに、前記表示光投影手段、前記反射鏡及び前記撮像手段を収容する筐体と、前記筐体に形成された開口部に配設され、前記表示光及び前記赤外光が通過する透光部材とを備え、
前記透光部材の周縁部には、可視光を遮光する遮光部が設けられ、
前記撮像手段は、前記遮光部に対応して設けられ、
前記遮光部の少なくとも前記撮像手段が対応する部分には、赤外光を透過させる赤外光透過部が設けられていることを特徴とする車両用表示装置。
The display light from the display light projection means is reflected by a reflecting mirror and projected onto the reflected light-transmitting member, and a virtual image is generated by the display light reflected by the reflected light-transmitting member overlaid on the actual scene transmitted through the reflected light-transmitting member. This is a vehicle display device that irradiates a vehicle user with infrared light from an infrared light irradiating means and images the user with an imaging means.
It is provided with the display light projection means, the reflector and the image pickup means, and is arranged in a housing for accommodating the display light projection means, the reflector and the image pickup means, and an opening formed in the housing. A translucent member through which the display light and the infrared light pass.
A light-shielding portion that shields visible light is provided on the peripheral portion of the translucent member.
The image pickup means is provided corresponding to the light-shielding portion, and is provided.
A display device for a vehicle, characterized in that an infrared light transmitting portion for transmitting infrared light is provided at least in a portion of the light-shielding portion corresponding to the image pickup means.
前記筐体は、前記赤外光照射手段を収容し、
前記赤外光照射手段は、前記遮光部に対向して設けられ、
前記遮光部の前記赤外光照射手段が対向する部分には、赤外光を透過させる赤外光透過部が設けられていることを特徴とする請求項1に記載の車両用表示装置。
The housing accommodates the infrared light irradiation means.
The infrared light irradiation means is provided so as to face the light-shielding portion.
The vehicle display device according to claim 1, wherein an infrared light transmitting portion for transmitting infrared light is provided in a portion of the light-shielding portion facing the infrared light irradiating means.
表示光投影手段からの表示光を反射鏡で反射させて反射透光部材に投影し、前記反射透光部材を透過する実景に重ねて前記反射透光部材に反射された表示光により虚像を生成して表示するとともに、車両の利用者に対し、赤外光照射手段からの赤外光を照射し、前記利用者を撮像手段で撮像する車両用表示装置であって、
前記表示光投影手段、前記反射鏡及び前記撮像手段を備えるとともに、前記表示光投影手段、前記反射鏡及び前記撮像手段を収容する筐体と、前記筐体に形成された開口部に配設され、前記表示光及び前記赤外光が通過する透光部材とを備え、
前記透光部材の周縁部には、可視光を遮光する遮光部及び可視光を遮光しない透光部が設けられ、
前記撮像手段は、前記透光部に対応して設けられ、
前記撮像手段と前記透光部との間には、可視光を遮光して赤外光を透過させる遮蔽部材が設けられていることを特徴とする車両用表示装置。
The display light from the display light projection means is reflected by a reflecting mirror and projected onto the reflected light-transmitting member, and a virtual image is generated by the display light reflected by the reflected light-transmitting member overlaid on the actual scene transmitted through the reflected light-transmitting member. This is a vehicle display device that irradiates a vehicle user with infrared light from an infrared light irradiating means and images the user with an imaging means.
It is provided with the display light projection means, the reflector and the image pickup means, and is arranged in a housing for accommodating the display light projection means, the reflector and the image pickup means, and an opening formed in the housing. A translucent member through which the display light and the infrared light pass.
A light-shielding portion that blocks visible light and a light-transmitting portion that does not block visible light are provided on the peripheral portion of the translucent member.
The image pickup means is provided corresponding to the translucent portion, and is provided.
A display device for a vehicle, characterized in that a shielding member that shields visible light and transmits infrared light is provided between the image pickup means and the translucent portion.
前記筐体は、前記赤外光照射手段を収容し、
前記赤外光照射手段は、前記透光部に対向して設けられ、
前記赤外光照射手段と前記透光部との間には、可視光を遮光して赤外光を透過させる遮蔽部材が設けられていることを特徴とする請求項3に記載の車両用表示装置。
The housing accommodates the infrared light irradiation means.
The infrared light irradiation means is provided so as to face the translucent portion.
The vehicle display according to claim 3, wherein a shielding member that shields visible light and transmits infrared light is provided between the infrared light irradiating means and the translucent portion. Device.
前記撮像手段は、前記筐体において前記車両の車幅方向一端側に設けられ、前記赤外光照射手段は、前記筐体において前記車両の車幅方向他端側に設けられていることを特徴とする請求項2又は請求項4に記載の車両用表示装置。 The imaging means is provided on one end side of the vehicle in the vehicle width direction in the housing, and the infrared light irradiation means is provided on the other end side of the vehicle in the vehicle width direction in the housing. The vehicle display device according to claim 2 or 4. 前記遮蔽部材は、前記透光部と略平行に設けられていることを特徴とする請求項4又は請求項5に記載の車両用表示装置。 The vehicle display device according to claim 4 or 5, wherein the shielding member is provided substantially parallel to the translucent portion. 前記遮蔽部材は、前記筐体に保持されていることを特徴とする請求項4乃至請求項6のいずれか1項に記載の車両用表示装置。 The vehicle display device according to any one of claims 4 to 6, wherein the shielding member is held in the housing. 前記遮光部には、前記遮蔽部材と重なり合い、前記透光部材の外側から内側に向けて色が薄くなる重合部が設けられていることを特徴とする請求項4乃至請求項7のいずれか1項に記載の車両用表示装置。 1. Display device for vehicles as described in the section. 前記遮光部は、前記透光部材に黒色の印刷層が形成されて設けられていることを特徴とする請求項1乃至請求項8のいずれか1項に記載の車両用表示装置。 The vehicle display device according to any one of claims 1 to 8, wherein the light-shielding portion is provided with a black print layer formed on the translucent member.
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