JP2014163693A - Vehicle display device - Google Patents

Vehicle display device Download PDF

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JP2014163693A
JP2014163693A JP2013032323A JP2013032323A JP2014163693A JP 2014163693 A JP2014163693 A JP 2014163693A JP 2013032323 A JP2013032323 A JP 2013032323A JP 2013032323 A JP2013032323 A JP 2013032323A JP 2014163693 A JP2014163693 A JP 2014163693A
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light
pointer
hole
dial
light guide
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JP6124057B2 (en
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Yasushi Takahashi
泰史 高橋
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Nippon Seiki Co Ltd
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Nippon Seiki Co Ltd
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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
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/60—Structural details of dashboards or instruments
    • B60K2360/68—Features of instruments
    • B60K2360/698—Pointers of combined instruments

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Abstract

PROBLEM TO BE SOLVED: To provide a vehicle display device having a small gap between a light-emitting surface of a light-guiding member and a hole section of a character board, which achieves reduction in the amount of illuminating light that is not incident from the hole section and passes through the gap.SOLUTION: A pointer-type instrument has a pointer 20 that points to a character board 10 and a pointer-driving section 30 that rotates the pointer 20. Illuminating means transmits illuminating light in a radial direction perpendicular to a rotation central axis A of the pointer 20 from a hole section 17 formed in the character board 10. The illuminating means has a light-emitting element 50 that emits the illuminating light and a light-guiding member 60 having a through-hole 60a through which the rotation central axis A penetrates. The light-guiding member 60 having a guide section 65 that is inserted into the hole section 17 of the character board 10. A case 80 positions and supports the character board 10. The light-guiding member 60 has a light-emitting surface 63 that is a cylindrical surface facing the hole section 17.

Description

本発明は、指針式計器を備えた車両用表示装置に関するものである。   The present invention relates to a vehicle display device provided with a pointer-type instrument.

従来より、指針式計器を備えた車両用表示装置が種々提案されており、例えば特許文献１に開示されている。斯かる車両用表示装置は、指針駆動部と、文字板と、指針と、ケース体と、複数の発光素子と、発光素子の光を指針に導いて光輝させる導光部材とを備えたものである。この車両用表示装置は、導光部材の外周部に突起部を設け、ケース体に外周部に対向する対向壁を設け、この対向壁に係止部を設け、対向壁の周囲に対向壁が変形するのを抑制する取付部材を設けたものである。また、本願出願人は、文字板に指針の回動中心と垂直な半径方向に照明光を照射して文字板を照明する照明手段を備えた車両用表示装置を提案している（特願２０１２−１２６７８）。   Conventionally, various vehicle display devices provided with a pointer-type instrument have been proposed, and for example, disclosed in Patent Document 1. Such a display device for a vehicle includes a pointer driving unit, a dial, a pointer, a case body, a plurality of light emitting elements, and a light guide member that guides light of the light emitting elements to the pointer to shine. is there. In this vehicle display device, a protrusion is provided on the outer peripheral portion of the light guide member, an opposing wall is provided on the case body so as to face the outer peripheral portion, an engaging portion is provided on the opposing wall, and an opposing wall is provided around the opposing wall. An attachment member that suppresses deformation is provided. Further, the applicant of the present application has proposed a display device for a vehicle including illumination means for illuminating the dial plate by irradiating the dial plate with illumination light in a radial direction perpendicular to the rotation center of the pointer (Japanese Patent Application 2012). -12678).

特開２０１１−８０９０３号公報JP 2011-80903 A

しかしながら、ケース体に位置決め用のピンが立ち、文字板にその位置決めピンに対応した孔部があり、位置決めピンを孔部に合わせて位置決めした状態で、導光部材と導光文字板の入光部とを組合せようとしても、寸法誤差や組付け誤差により、導光文字板と導光部材を組み付けることができない虞があった。仮に、導光部材の光出射面と文字板の孔部との間の隙間を大きくした場合、組付けは可能になるが、導光部材の光出射面と文字板の孔部との間の隙間から照明光が漏れるため、導光部材の光出射面から照射された照明光の一部が、文字板の孔部から入射しなくなり、照明光の利用効率が低いという問題を有していた。
本発明は、この問題に鑑みなされたものであり、導光部材の光出射面と文字板の孔部との間の隙間が小さく、孔部から入射せずに漏れる照明光を低減できる車両用表示装置を提供するものである。 However, the positioning pin stands on the case body, the dial has a hole corresponding to the positioning pin, and the positioning light is incident on the light guide member and the light guide dial with the positioning pin aligned with the hole. Even if the parts are combined, there is a possibility that the light guide dial and the light guide member cannot be assembled due to dimensional errors or assembly errors. If the gap between the light exit surface of the light guide member and the hole in the dial plate is increased, assembly is possible, but the space between the light exit surface of the light guide member and the hole in the dial plate Since the illumination light leaks from the gap, a part of the illumination light irradiated from the light exit surface of the light guide member does not enter from the hole of the dial plate, and there is a problem that the use efficiency of the illumination light is low. .
The present invention has been made in view of this problem, and the gap between the light exit surface of the light guide member and the hole of the dial is small, and the vehicle can reduce illumination light that does not enter through the hole. A display device is provided.

本発明は、指標部１１を有する文字板１０と、前記文字板１０の前記指標部１１を指示する指針２０と、前記指針２０を回動させる指針駆動部３０と、前記文字板１０に前記指針２０の回動中心Ａと垂直な半径方向に照明光を照射して前記文字板１０を照明する照明手段と、を備え、前記照明手段は、前記照明光を発する発光素子５０と、前記回動中心Ａが通る貫通孔６０ａを有する導光部材６０と、を有し、前記文字板１０は、前記導光部材６０を位置決めする孔部１７を有するものである。   The present invention includes a dial plate 10 having an indicator portion 11, a pointer 20 that points to the indicator portion 11 of the dial plate 10, a pointer drive portion 30 that rotates the pointer 20, and the pointer on the dial plate 10. Illuminating means for illuminating the dial plate 10 by irradiating illumination light in a radial direction perpendicular to the rotation center A of the light-emitting element 50, the illumination means emitting the illumination light, and the rotation A light guide member 60 having a through hole 60 a through which the center A passes, and the dial 10 has a hole portion 17 for positioning the light guide member 60.

また、本発明は、文字板１０を指示する指針２０と前記指針２０を回動させる指針駆動部３０とを有する指針式計器と、前記文字板１０に形成された孔部１７から前記指針２０の回動中心Ａと垂直な半径方向に照明光を照射する照明手段と、を備え、前記照明手段は、前記照明光を発する発光素子５０と、前記回動中心Ａが通る貫通孔６０ａを有する導光部材６０と、を有し、前記導光部材６０は、前記文字板１０の前記孔部１７に挿入されるガイド部６５を有するものである。   Further, the present invention provides a pointer-type instrument having a pointer 20 that points to the dial plate 10 and a pointer drive unit 30 that rotates the pointer 20, and a hole 17 formed in the dial plate 10. Illuminating means for irradiating illumination light in a radial direction perpendicular to the rotation center A, and the illumination means has a light emitting element 50 that emits the illumination light, and a guide having a through hole 60a through which the rotation center A passes. The light guide member 60 has a guide portion 65 that is inserted into the hole portion 17 of the dial plate 10.

また、本発明は、前記文字板１０を位置決めして支持するケース体８０を備えたものである。   In addition, the present invention includes a case body 80 that positions and supports the dial 10.

また、本発明は、前記導光部材６０は、前記孔部１７に対向する円筒面からなる光出射面６３を有するものである。   In the present invention, the light guide member 60 has a light emitting surface 63 formed of a cylindrical surface facing the hole portion 17.

導光部材の光出射面と文字板の孔部との間の隙間を小さく設計でき、文字板の孔部から入射せずに漏れる照明光を低減できる。   The gap between the light exit surface of the light guide member and the hole of the dial can be designed to be small, and the illumination light leaking without entering from the hole of the dial can be reduced.

本発明の実施形態を示す正面図Front view showing an embodiment of the present invention 同上実施形態を示す要部断面図。Sectional drawing which shows the principal part which shows embodiment same as the above. 同上実施形態を示す要部拡大断面図。The principal part expanded sectional view which shows embodiment same as the above. 同上実施形態を示す要部拡大断面図。The principal part expanded sectional view which shows embodiment same as the above. 同上実施形態を示す要部断面図。Sectional drawing which shows the principal part which shows embodiment same as the above. 同上実施形態を示す要部断面図。Sectional drawing which shows the principal part which shows embodiment same as the above.

以下、添付図面に基づいて、本発明の一実施形態を説明する。説明の便宜上、指針２０の回動中心ＡをＺ軸とし、このＺ軸に垂直な面をＸＹ平面として説明する。車両用表示装置は、文字板１０，指針２０，ステッピングモータ３０，液晶表示器４０，発光素子５０，導光部材６０，回路基板７０，ケース体８０等から構成されている。   Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. For convenience of explanation, the rotation center A of the pointer 20 will be described as a Z axis, and a plane perpendicular to the Z axis will be described as an XY plane. The vehicle display device includes a dial 10, a pointer 20, a stepping motor 30, a liquid crystal display 40, a light emitting element 50, a light guide member 60, a circuit board 70, a case body 80, and the like.

文字板１０は、指針２０に指示される複数の目盛り，数字からなる指標部１１を有しており、ケース体８に支持されている。文字板１０の指標部１１は、正面視で、円弧状に配置されている。図４に示すように、文字板１０は、導光部１２，前面側低屈折率部１３，後面側低屈折率部１４，意匠部１５，光拡散部１６からなり、前面側低屈折率部１３及び意匠部１５の開口に形成された光拡散部１６が指標部１１になっている。   The dial 10 has a plurality of scales and indicators 11 indicated by the pointer 20 and is supported by the case body 8. The indicator portion 11 of the dial 10 is arranged in an arc shape when viewed from the front. As shown in FIG. 4, the dial 10 includes a light guide portion 12, a front side low refractive index portion 13, a rear side low refractive index portion 14, a design portion 15, and a light diffusion portion 16, and includes a front side low refractive index portion. 13 and the light diffusion part 16 formed in the opening of the design part 15 is the indicator part 11.

文字板１０には、正面視円形の孔部１７が形成されている。文字板１０の孔部１７は、導光部材６０の光出射面６３が対向する円筒面になっている。また、文字板１０には、ケース体８０に文字板１０を位置決めするための孔部１８が形成されている。文字板１０の孔部１８は、ケース体８０の前壁８３に形成された突起８１が挿通される。なお、孔部１８及び突起８１は、見返し部材（図示しない）によって隠される。文字板１０は、液晶表示器４０の表示画面を視認する矩形の窓部１９を有している。   The dial 10 is formed with a circular hole 17 in a front view. The hole 17 of the dial plate 10 has a cylindrical surface facing the light emitting surface 63 of the light guide member 60. Further, the dial 10 is formed with a hole 18 for positioning the dial 10 in the case body 80. A projection 81 formed on the front wall 83 of the case body 80 is inserted through the hole 18 of the dial 10. The hole 18 and the protrusion 81 are hidden by a turning member (not shown). The dial plate 10 has a rectangular window 19 for viewing the display screen of the liquid crystal display 40.

文字板１０の導光部１２は、導光部材６０を介して孔部１７から照射された照明光を導光する。導光部１２は、透明又は半透明の透光性（半透光性を含む）を有する平板状の合成樹脂製の部材（例えばポリカーボネート板等）である。具体的に、導光部１２は、ポリカーボネート系樹脂（光の屈折率は約１．６）、アクリル系樹脂（光の屈折率は約１．４９）、シリコーン系樹脂（光の屈折率は約１．５）等を用いて形成される。導光部１２は、導光部材６０を介して、発光素子５０が発した照明光を孔部１７で受光し、その受光した光（孔部１７から内部に入射した光）を導光する。   The light guide portion 12 of the dial 10 guides the illumination light emitted from the hole portion 17 through the light guide member 60. The light guide unit 12 is a flat plate-shaped synthetic resin member (for example, a polycarbonate plate or the like) having a transparent or translucent translucency (including translucent property). Specifically, the light guide unit 12 includes a polycarbonate resin (with a light refractive index of about 1.6), an acrylic resin (with a light refractive index of about 1.49), and a silicone resin (with a light refractive index of about 1.49). 1.5) or the like. The light guide unit 12 receives the illumination light emitted from the light emitting element 50 through the hole 17 via the light guide member 60, and guides the received light (light entering the inside from the hole 17).

前面側低屈折率部１３は、導光部１２の前面の略全体を覆うように設けられ、後面側低屈折率部１４は、導光部１２の後面の略全体を覆うように設けられる。前面側低屈折率部１３及び後面側低屈折率部１４は、透明又は半透明の透光性（半透光性を含む）を有し、導光部１２よりも光の屈折率が低い。前面側低屈折率部１３及び後面側低屈折率部１４は、例えば、導光部１２よりも光の屈折率が低い合成樹脂を用いて、印刷、塗装等によって形成される。   The front side low refractive index portion 13 is provided so as to cover substantially the entire front surface of the light guide portion 12, and the rear side low refractive index portion 14 is provided so as to cover substantially the entire rear surface of the light guide portion 12. The front-side low refractive index portion 13 and the rear-side low refractive index portion 14 have transparent or translucent translucency (including semi-translucency) and have a lower refractive index of light than the light guide portion 12. The front side low refractive index portion 13 and the rear side low refractive index portion 14 are formed by printing, painting, or the like using, for example, a synthetic resin whose light refractive index is lower than that of the light guide portion 12.

具体的に、前面側低屈折率部１３及び後面側低屈折率部１４は、アクリル系樹脂（光の屈折率は約１．４９）、シリコーン系樹脂（光の屈折率は約１．５）、テトラフルオロエチレンやポリテトラフルオロエチレン（ポリエチレンの一種、光の屈折率は約１．３５）等によって形成されている。導光部１２によって導光された光は、前面側低屈折率部１３，後面側低屈折率部１４と導光部１２との界面で全反射する。   Specifically, the front side low refractive index portion 13 and the rear side low refractive index portion 14 are made of acrylic resin (light refractive index is about 1.49), silicone resin (light refractive index is about 1.5). , Tetrafluoroethylene, polytetrafluoroethylene (a kind of polyethylene, the refractive index of light is about 1.35), and the like. The light guided by the light guide part 12 is totally reflected at the interface between the front side low refractive index part 13, the rear side low refractive index part 14 and the light guide part 12.

光拡散部１６は、導光部１２の前面に設けられる。光拡散部１６は、導光部１２が導光した光を拡散する。光拡散部１６は、前面側低屈折率部１３及び意匠部１５の開口である指標部１１対応する領域に設けられる。なお、ここでいう拡散とは、乱反射，散乱，屈折，反射等によって、光の進路が変更されることを適宜含む。   The light diffusing unit 16 is provided on the front surface of the light guide unit 12. The light diffusion unit 16 diffuses the light guided by the light guide unit 12. The light diffusion portion 16 is provided in a region corresponding to the indicator portion 11 which is an opening of the front side low refractive index portion 13 and the design portion 15. Note that the term “diffusion” here includes appropriately changing the path of light by irregular reflection, scattering, refraction, reflection, or the like.

意匠部１５は、前面側低屈折率部１３の前面側に設けられる。意匠部１５は、例えば、インク等を用いて、印刷、塗装等によって形成される。意匠部１５は、遮光性であっても良いし、例えば白色の半透過性であっても良い。   The design portion 15 is provided on the front side of the front side low refractive index portion 13. The design portion 15 is formed by printing, painting, or the like using, for example, ink. The design portion 15 may be light-shielding or may be white translucent, for example.

指針２０は、指針基部２１と、指示部２２と、指針キャップ２３とを有している。指針２０は、回動中心Ａを中心軸として、ステッピングモータ３０により回動される。指針基部２１は、透明な樹脂からなるものであり、指示部２２と一体に形成されている。指針基部２１は、導光部材６０を介して照射される照明光を指示部２２に向けて反射させる反射面２１ａを有している。指示部２２は、指針基部２１から半径方向に伸長する形状になっており、文字板１０の指標部１１を指示する。指針キャップ２３は、不透明な樹脂からなり、図示しない係止爪によって指針基部２１に係止されている。指針キャップ２３は、正面視で円形になっており、指針基部２１を覆う。   The pointer 20 includes a pointer base portion 21, an instruction portion 22, and a pointer cap 23. The pointer 20 is rotated by the stepping motor 30 about the rotation center A as a central axis. The pointer base portion 21 is made of a transparent resin and is formed integrally with the instruction portion 22. The pointer base 21 has a reflecting surface 21 a that reflects the illumination light irradiated through the light guide member 60 toward the instruction unit 22. The instructing unit 22 has a shape extending in the radial direction from the pointer base 21 and instructs the indicator unit 11 of the dial 10. The pointer cap 23 is made of an opaque resin and is locked to the pointer base 21 by a locking claw (not shown). The pointer cap 23 has a circular shape when viewed from the front, and covers the pointer base 21.

ステッピングモータ３０は、回路基板７０に搭載されており、回動中心Ａを中心軸として指針２０を回動させる。ステッピングモータ３０の軸受け部３２は、回路基板７０に形成された貫通孔７１に挿通されている。ステッピングモータ３０は回動軸３１を有しており、回動軸３１の端部に指針基部２１のボス部２１ｂが装着される。   The stepping motor 30 is mounted on the circuit board 70 and rotates the pointer 20 about the rotation center A as a central axis. The bearing portion 32 of the stepping motor 30 is inserted through a through hole 71 formed in the circuit board 70. The stepping motor 30 has a rotation shaft 31, and a boss portion 21 b of the pointer base 21 is attached to an end portion of the rotation shaft 31.

指針式計器は、文字板１０，指針２０，ステッピングモータ３０からなるものであり、文字板１０の指標部１１を指針２０で指示することにより、車両の速度やエンジン回転数を表示する。   The pointer-type meter is composed of a dial plate 10, a pointer 20, and a stepping motor 30, and displays the vehicle speed and the engine speed by indicating the indicator portion 11 of the dial plate 10 with the pointer 20.

液晶表示器４０は、ＴＦＴ型の液晶表示パネルと、この液晶表示パネルを透過照明するバックライトとを備えている。液晶表示器４０は、２個の指針式計器の間に配置されている。液晶表示器４０は矩形の表示画面を有しており、その表示画面に種々の車両情報（例えば、ナビゲーション情報）を表示する。発光素子５０は、１個または２個以上の発光ダイオード（ＬＥＤ）からなるものであり、回路基板７０の前面に搭載されている。発光素子５０は、貫通孔７１の周辺部に配置され、導光部材６０の受光面６１に向けて、照明光を発する。   The liquid crystal display 40 includes a TFT liquid crystal display panel and a backlight that transmits and illuminates the liquid crystal display panel. The liquid crystal display 40 is disposed between two pointer-type meters. The liquid crystal display 40 has a rectangular display screen, and displays various vehicle information (for example, navigation information) on the display screen. The light emitting element 50 is composed of one or two or more light emitting diodes (LEDs), and is mounted on the front surface of the circuit board 70. The light emitting element 50 is disposed in the periphery of the through hole 71 and emits illumination light toward the light receiving surface 61 of the light guide member 60.

導光部材６０は、透光性の樹脂からなるものである。導光部材６０は、筒状になっており、指針２０の回動中心Ａが貫通する貫通孔６０ａを有している。導光部材６０は、発光素子５０が発した照明光を受光する受光面６１を有している。導光部材６０の受光面６１は、円環状の平面になっている。導光部材６０は半径方向に突出する突出部６８を有しており、この突出部６８がケース体８０の支持部８２ｂに支持される。また、導光部材６０は、係止部６２によってケース体８０に係止されている。   The light guide member 60 is made of a translucent resin. The light guide member 60 is cylindrical and has a through hole 60a through which the rotation center A of the pointer 20 passes. The light guide member 60 has a light receiving surface 61 that receives illumination light emitted from the light emitting element 50. The light receiving surface 61 of the light guide member 60 is an annular plane. The light guide member 60 has a protruding portion 68 protruding in the radial direction, and the protruding portion 68 is supported by the support portion 82 b of the case body 80. Further, the light guide member 60 is locked to the case body 80 by a locking portion 62.

導光部材６０は、受光面６１から入射した照明光を孔部１７に向けて反射させる湾曲面６４と、この湾曲面６４で反射された照明光が出射する光出射面６３とを有している。受光面６１から入射した照明光の一部は、文字板１０の孔部１７に向けて反射され、他の一部は、湾曲面６４を透過して、指針基部２１の反射面２１ａに照射される。   The light guide member 60 includes a curved surface 64 that reflects the illumination light incident from the light receiving surface 61 toward the hole 17, and a light emitting surface 63 from which the illumination light reflected by the curved surface 64 is emitted. Yes. Part of the illumination light incident from the light receiving surface 61 is reflected toward the hole 17 of the dial plate 10, and the other part is transmitted through the curved surface 64 and irradiated onto the reflecting surface 21 a of the pointer base 21. The

導光部材６０の光出射面６３は、文字板１０の孔部１７に対向する円筒面になっている。光出射面６３の直径は孔部１７の直径Ｄに略等しくなっているが、光出射面６３と孔部１７の間に微小な隙間があっても良い。導光部材６０の湾曲面６４により、照明光が指針２０の回動中心Ａと垂直な半径方向に反射され、文字板１０の孔部１７に照射される。湾曲面６４を透過した照明光は、指針基部２１の反射面２１ａによって指示部２２に反射され、指示部２２を光輝させる。導光部材６０は、文字板１０の孔部１７に挿入されるガイド部６５を有している。ガイド部６５の外周面は、テーパ面６５ａになっている。   The light emitting surface 63 of the light guide member 60 is a cylindrical surface facing the hole 17 of the dial 10. Although the diameter of the light emitting surface 63 is substantially equal to the diameter D of the hole portion 17, there may be a minute gap between the light emitting surface 63 and the hole portion 17. Due to the curved surface 64 of the light guide member 60, the illumination light is reflected in the radial direction perpendicular to the rotation center A of the pointer 20 and is applied to the hole 17 of the dial 10. The illumination light transmitted through the curved surface 64 is reflected by the instruction unit 22 by the reflecting surface 21a of the pointer base 21 and causes the instruction unit 22 to shine. The light guide member 60 has a guide portion 65 that is inserted into the hole portion 17 of the dial plate 10. The outer peripheral surface of the guide portion 65 is a tapered surface 65a.

回路基板７０は、ガラスエポキシ樹脂からなる基材に配線パターンを形成した硬質配線板からなるものである。回路基板７０には、ステッピングモータ３０，発光素子５０等が搭載される。回路基板７０は、液晶表示器４０の後面側に配置される。   The circuit board 70 is made of a hard wiring board in which a wiring pattern is formed on a base material made of glass epoxy resin. On the circuit board 70, the stepping motor 30, the light emitting element 50, and the like are mounted. The circuit board 70 is disposed on the rear surface side of the liquid crystal display 40.

ケース体８０は、白色の樹脂からなるものであり、略平板状の前壁８３と、略円筒状の反射壁８２を有している。反射壁８２の内側面には、導光部材６０の係止部６２が係止される係止部８２ａと、導光部材６０の突出部６８を支持する支持部８２ｂとが形成されている。ケース体８０の前壁８３には、文字板１０を位置決めするための略円柱形状の突起８１が形成されている。ケース体８０の突起８１は、文字板１０の孔部１８に挿通される。背面カバー９０は、不透明または半透明な樹脂からなるものであり、ステッピングモータ３０，回路基板７０の後面を保護している。   The case body 80 is made of a white resin and has a substantially flat front wall 83 and a substantially cylindrical reflecting wall 82. On the inner side surface of the reflection wall 82, a locking portion 82a for locking the locking portion 62 of the light guide member 60 and a support portion 82b for supporting the protruding portion 68 of the light guide member 60 are formed. A substantially cylindrical protrusion 81 for positioning the dial 10 is formed on the front wall 83 of the case body 80. The protrusion 81 of the case body 80 is inserted through the hole 18 of the dial 10. The back cover 90 is made of an opaque or translucent resin, and protects the rear surfaces of the stepping motor 30 and the circuit board 70.

文字板１０をケース体８０に組付けていないとき、導光部材６０は、ＸＹ平面上において所定範囲Ｆで若干の位置調整可能なように、ケース体８０に支持されている（図５（ａ）参照）。そして、文字板１０をケース体８０に位置決めして組付けたとき、導光部材６０は、文字板１０の孔部１７によって位置決めされる（図５（ｂ）参照）。   When the dial plate 10 is not assembled to the case body 80, the light guide member 60 is supported by the case body 80 so that the position of the light guide member 60 can be adjusted within a predetermined range F on the XY plane (FIG. 5A). )reference). When the dial plate 10 is positioned and assembled to the case body 80, the light guide member 60 is positioned by the hole 17 of the dial plate 10 (see FIG. 5B).

本実施形態のような構造にすることにより、文字板１０の孔部１７の直径Ｄを、導光部材６０の光出射面１７の直径と略等しくすることができ、孔部１７から入射せずに漏れる照明光を低減できる。なお、本発明は、本実施形態に限定されるものではなく、種々の変形が可能であることは言うまでもない。   By adopting the structure as in the present embodiment, the diameter D of the hole 17 of the dial 10 can be made substantially equal to the diameter of the light emitting surface 17 of the light guide member 60 and is not incident from the hole 17. It is possible to reduce the illumination light leaking into the screen. Needless to say, the present invention is not limited to this embodiment, and various modifications are possible.

１０ 文字板
１１ 指標部
１２ 導光部
１３ 前面側低屈折率部
１４ 後面側低屈折率部
１７ 孔部
２０ 指針
２２ 指示部
３０ ステッピングモータ（指針駆動部）
４０ 液晶表示器
５０ 発光素子（照明手段）
６０ 導光部材（照明手段）
６０ａ 貫通孔
６３ 光出射面
６５ ガイド部
８０ ケース体 DESCRIPTION OF SYMBOLS 10 Dial 11 Index part 12 Light guide part 13 Front side low refractive index part 14 Rear side low refractive index part 17 Hole part 20 Pointer 22 Instruction part 30 Stepping motor (pointer drive part)
40 Liquid crystal display 50 Light emitting element (illumination means)
60 Light guide member (illumination means)
60a Through hole 63 Light exit surface 65 Guide portion 80 Case body

Claims (4)

指標部を有する文字板と、前記文字板の前記指標部を指示する指針と、前記指針を回動させる指針駆動部と、前記文字板に前記指針の回動中心と垂直な半径方向に照明光を照射して前記文字板を照明する照明手段と、を備え、
前記照明手段は、前記照明光を発する発光素子と、前記回動中心が通る貫通孔を有する導光部材と、を有し、前記文字板は、前記導光部材を位置決めする孔部を有することを特徴とする車両用表示装置。 A dial plate having an indicator portion, a pointer for indicating the indicator portion of the dial plate, a pointer driving portion for rotating the pointer, and illumination light in a radial direction perpendicular to the rotation center of the pointer on the dial plate And illuminating means for illuminating the dial plate,
The illumination means includes a light emitting element that emits the illumination light, and a light guide member having a through hole through which the rotation center passes, and the dial has a hole portion for positioning the light guide member. A display device for vehicles. 文字板を指示する指針と前記指針を回動させる指針駆動部とを有する指針式計器と、前記文字板に形成された孔部から前記指針の回動中心と垂直な半径方向に照明光を照射する照明手段と、を備え、
前記照明手段は、前記照明光を発する発光素子と、前記回動中心が通る貫通孔を有する導光部材と、を有し、前記導光部材は、前記文字板の前記孔部に挿入されるガイド部を有することを特徴とする車両用表示装置。 A pointer-type instrument having a pointer for indicating the dial and a pointer drive unit for rotating the pointer, and irradiating illumination light in a radial direction perpendicular to the rotation center of the pointer from a hole formed in the dial And lighting means
The illumination means includes a light emitting element that emits the illumination light, and a light guide member having a through hole through which the rotation center passes, and the light guide member is inserted into the hole of the dial. A vehicle display device having a guide portion. 前記文字板を位置決めして支持するケース体を備えたことを特徴とする請求項１または請求項２に記載の車両用表示装置。   The vehicle display device according to claim 1, further comprising a case body that positions and supports the dial. 前記導光部材は、前記孔部に対向する円筒面からなる光出射面を有することを特徴とする請求項１または請求項２に記載の車両用表示装置。   The vehicle display device according to claim 1, wherein the light guide member has a light emission surface including a cylindrical surface facing the hole.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017067563A (en) * 2015-09-29 2017-04-06 日本精機株式会社 Display device
JP2019045209A (en) * 2017-08-30 2019-03-22 日本精機株式会社 Display device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000018977A (en) * 1998-07-06 2000-01-21 Denso Corp Meter with pointer
JP2007003292A (en) * 2005-06-22 2007-01-11 Yazaki Corp Measuring instrument lighting structure

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000018977A (en) * 1998-07-06 2000-01-21 Denso Corp Meter with pointer
JP2007003292A (en) * 2005-06-22 2007-01-11 Yazaki Corp Measuring instrument lighting structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017067563A (en) * 2015-09-29 2017-04-06 日本精機株式会社 Display device
JP2019045209A (en) * 2017-08-30 2019-03-22 日本精機株式会社 Display device

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