JP2018197655A - Vehicle display device pointer and vehicle display device - Google Patents

Abstract

To provide a vehicle display device pointer and a vehicle display device capable of emitting light in a novel mode.SOLUTION: A pointer prism member 31 is formed by a light transmissive material to be thinner as it goes away from a rear end portion 31e that is an end portion on one side in a pointer extending direction X1 extended along the pointer extending direction X1. The pointer prism member 31 has a first reflection surface 31b, a second reflection surface 31c, and an emission surface 31d. A pointer indication member 32 is formed in a plate shape by the light transmissive material along a pointer width direction extending along the pointer extending direction X1 and intersecting the pointer extending direction X1. The pointer indicating member 32 is connected by a connection surface on a side of the pointer prism member 31 to the pointer prism member 31, and covers an exposed portion of the pointer prism member 31 from a visible surface side opposite to the connection surface.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a pointer for a vehicle display device and a vehicle display device.

  As a conventional pointer for a vehicle display device applied to a vehicle display device, for example, Patent Literature 1 discloses a pointer base portion that receives light from a light source, and a pointer extension portion that extends in a bar shape in one direction of the pointer base portion. And a self-luminous pointer made of a translucent resin member having a reflecting surface that reflects light received by the pointer base toward the distal end side of the pointer extension.

JP2011-64696A

  By the way, it is desired that the self-luminous pointer described in Patent Document 1 described above emits light from the pointer extending portion in a novel manner.

  Accordingly, the present invention has been made in view of the above, and an object thereof is to provide a pointer for a vehicle display device that can emit light in a novel manner, and a vehicle display device.

  In order to solve the above-described problems and achieve the object, a pointer for a vehicle display device according to the present invention extends along a pointer extending direction by a light transmissive material, and is on one end of the pointer extending direction. In the pointer width direction that extends along the pointer extending direction and intersects the pointer extending direction by the first light transmitting body that is formed thinner as it moves away from the rear end portion that is a portion, and the light transmitting material A connecting surface on the first light transmitting body side that is formed in a plate shape along the first light transmitting body is connected to the first light transmitting body and covers the exposed portion of the first light transmitting body from the viewing surface side opposite to the connecting surface. A first light transmitting body provided at the rear end portion for reflecting incident light and an optical axis direction of the incident light. Provided at the end opposite to the second light transmitting body in the direction of the pointer optical axis, A second reflecting surface for reflecting the incident light reflected by the reflecting surface toward the second light transmitting body along the pointer optical axis direction; and an end on the second light transmitting body side in the pointer optical axis direction. An emission surface connected to the connection surface of the second light transmission body and emitting the incident light reflected by the second reflection surface toward the second light transmission body along the pointer optical axis direction; It is characterized by having.

  In the vehicle display device pointer, it is preferable that the second light transmissive member includes a reflective member that is provided on the viewing surface and reflects a part of incident light and transmits the remainder of the incident light. .

  In the vehicle display device pointer, it is preferable that the second reflection surface has a diffusion layer formed in an uneven shape.

  In addition, the vehicle display device according to the present invention is connected to the light source that emits light, a drive unit having a rotation shaft that can be driven to rotate, the light source, a housing that houses the drive unit, and the rotation shaft. The pointer is extended along the direction of extension of the pointer by the light transmissive material, and the pointer is thinned away from the rear end that is one end in the direction of extension of the pointer. The first light transmitting body and the light transmitting material are formed in a plate shape along the pointer width direction that extends along the pointer extending direction and intersects the pointer extending direction. A pointer illuminator having a second light transmissive body having a connection surface on the transmissive body side connected to the first light transmissive body and covering an exposed portion of the first light transmissive body from the viewing surface side opposite to the connection surface. The first light transmitting body is provided at the rear end portion and incident from the light source. A first reflecting surface that reflects the incident light and an end opposite to the second light transmitting body in the direction of the pointer optical axis that is the optical axis direction of the incident light, and is reflected by the first reflecting surface A second reflecting surface that reflects the incident light incident on the second light transmitting body along the pointer optical axis direction, and an end on the second light transmitting body side in the pointer optical axis direction. A light exit surface that is connected to the connection surface of the two light transmissive bodies and emits the incident light reflected by the second reflective surface toward the second light transmissive body along the pointer optical axis direction. Features.

  A pointer for a vehicle display device and a vehicle display device according to the present invention include a first light transmitting body that extends along a pointer extending direction and is formed to be thinner as the distance from the rear end portion increases, and a pointer extending direction The connecting surface on the first light transmitting body side is connected to the first light transmitting body and is visually recognized on the side opposite to the connecting surface. A pointer light emitter having a second light transmission body covering the exposed portion of the first light transmission body from the surface side is provided. The first light transmitting body includes a first reflecting surface that reflects incident light, a second reflecting surface that reflects incident light reflected by the first reflecting surface toward the second light transmitting body, and a second reflecting surface. And an exit surface for emitting the reflected incident light to the second light transmitting body side. With this configuration, the indicator for the vehicle display device and the vehicle display device can emit light in a novel manner.

FIG. 1 is a perspective view illustrating a schematic configuration example of a vehicle display device according to the embodiment. FIG. 2 is a perspective view illustrating a configuration example of a pointer of the vehicle display device according to the embodiment. FIG. 3 is an exploded perspective view illustrating a configuration example of a pointer of the vehicle display device according to the embodiment. FIG. 4 is a front view illustrating a configuration example of a pointer of the vehicle display device according to the embodiment. 5 is a cross-sectional view taken along line S11-S11 shown in FIG. 6 is a cross-sectional view taken along the line S12-S12 shown in FIG. FIG. 7 is a front view illustrating a light emission example of the pointer of the vehicle display device according to the embodiment. FIG. 8 is a front view showing a non-light emitting example of the pointer of the vehicle display device according to the embodiment. FIG. 9 is a cross-sectional view illustrating a configuration example of a pointer of a vehicle display device according to a modification. FIG. 10 is a cross-sectional view illustrating a configuration example of a pointer of a vehicle display device according to a modification. FIG. 11 is a perspective view illustrating a configuration example of a pointer of the vehicle display device according to the reference example. FIG. 12 is an exploded perspective view illustrating a configuration example of the pointer of the vehicle display device according to the reference example. FIG. 13 is a front view illustrating a configuration example of the pointer of the vehicle display device according to the reference example. 14 is a cross-sectional view taken along line S13-S13 shown in FIG. 15 is a cross-sectional view taken along line S14-S14 shown in FIG. 16 is a cross-sectional view taken along line S15-S15 shown in FIG. FIG. 17 is a front view showing a light emission example of the pointer of the vehicle display device according to the reference example.

  DESCRIPTION OF EMBODIMENTS Embodiments (embodiments) for carrying out the present invention will be described in detail with reference to the drawings. The present invention is not limited by the contents described in the following embodiments. The constituent elements described below include those that can be easily assumed by those skilled in the art and those that are substantially the same. Furthermore, the structures described below can be combined as appropriate. Various omissions, substitutions, or changes in the configuration can be made without departing from the scope of the present invention.

Embodiment
As shown in FIG. 1, a pointer 1 as a vehicle display device pointer according to the present embodiment is applied to a vehicle display device 100 mounted on a vehicle. The vehicle display device 100 constitutes a so-called on-vehicle meter, and is mounted on an instrument panel provided on a dashboard of the vehicle, for example, and displays various information related to the vehicle as information used for driving the vehicle. To do.

  Note that the width direction X of the vehicle display device 100 shown in FIG. 1 and the like typically corresponds to the vehicle width direction of a vehicle to which the vehicle display device 100 is applied. The depth direction Y of the vehicle display device 100 typically corresponds to the front-rear direction of the vehicle to which the vehicle display device 100 is applied. The front side of the vehicle display device 100 is the side facing the driver's seat of the vehicle in the depth direction Y, that is, the side where the viewing position EP is located. Here, the visual position EP is typically assumed in advance as being typically located within a so-called eye range in a vehicle to which the vehicle display device 100 is applied. Here, the eye range is an “automobile driver eye range” and corresponds to a region where a driver's viewpoint determined in advance according to the vehicle is located. The eye range is typically a statistical representation of the distribution of the driver's eyes in the vehicle. For example, the eye range is a predetermined ratio (for example, 95%) with the driver sitting in the driver's seat. This corresponds to an area including the position of the driver's eyes. On the other hand, the back side of the vehicle display device 100 is the side opposite to the front side in the depth direction Y, and is typically the side accommodated inside the instrument panel. The height direction Z of the vehicle display device 100 typically corresponds to a direction indicating the height of the vehicle to which the vehicle display device 100 is applied, and is, for example, a direction along the vertical direction. In addition, each direction used in the following description represents a direction in a state where the vehicle display device 100 is assembled to the instrument panel unless otherwise specified.

  Specifically, the vehicle display device 100 includes a display unit 101 that displays various information related to the vehicle, and a housing 102 that is made of a resin material or the like and houses the display unit 101 or the like. The display unit 101 is disposed in a housing 102 that accommodates each unit of the vehicle display device 100, and a display surface for various information is exposed on the front side in the depth direction Y. The housing 102 is, for example, a back cover disposed on the back side in the depth direction Y, a case main body disposed on the front side in the depth direction Y of the back cover, and a turn placed on the front side in the depth direction Y of the case body. The display part 101 is arrange | positioned in the space part comprised including a member etc. and divided by these. In the case 102, the display surface of each display unit 101 is exposed to the front side in the depth direction Y through an opening formed in the turning member. Here, as an example, the display unit 101 includes a speedometer 101A that displays the vehicle speed, a tachometer 101B that displays the output rotational speed of the driving power source, and the like as information about the vehicle. The speedometer 101 </ b> A and the tachometer 101 </ b> B are configured to include a dial plate 103, a pointer 1, and the like, and are various analog instruments that display various measurement values related to the vehicle in an analog manner using the pointer 1. On the dial 103, as information about the vehicle, for example, an indicator part indicating a measured value such as a speed and an output rotation number, and a design for a warning display indicated by the pointer 1 are drawn. The dial plate 103 is, for example, a polycarbonate sheet made of a transparent fabric, and is printed with a shape corresponding to the indicator portion, the warning display pattern, or the like with dark ink. In the display unit 101, the light emitted from the light source unit is transmitted through a portion of the dial plate 103 where the indicator unit and the warning display symbol are cut out, so that the indicator unit and the warning display symbol are displayed. It becomes. The indicator portion pointed to by the pointer 1 includes an arc along the turning trajectory of the tip of the pointer 1, and a plurality of scales, numbers, and the like attached at equal intervals along the arc. The pointer 1 constitutes a part of the display unit 101 and indicates information related to the vehicle. The pointer 1 is located on the front side in the depth direction Y of the dial plate 103 and points to a predetermined position of the indicator portion according to various measurement values (speed, output rotation speed, etc.) relating to the vehicle. Each display unit 101 is indicated by the pointer 1 with the current speed and the output rotation speed.

  Hereinafter, each configuration of the pointer 1 applied to the vehicle display device 100 as described above will be described in detail with reference to FIGS. 2, 3, 4, 5, and 6. In the pointer 1 described below, of the first direction, the second direction, and the third direction intersecting with each other, the first direction is the “pointer extending direction X1” and the second direction is the “pointer optical axis”. The direction is Y1 ”, and the third direction is“ pointer width direction Z1 ”. Here, the pointer extending direction X1, the pointer optical axis direction Y1, and the pointer width direction Z1 are substantially orthogonal to each other. Typically, the pointer optical axis direction Y1 is a direction along the depth direction Y. Each direction used in the following description represents a direction in a state where the parts of the pointer 1 are assembled to each other unless otherwise specified. Further, since the pointer 1 of the speedometer 101A and the pointer 1 of the tachometer 101B have substantially the same configuration, a common description will be given here.

  First, a configuration for rotating the pointer 1 will be described. As shown in FIG. 5, the pointer 1 is rotationally driven by a motor 104 serving as a drive unit disposed in a housing 102 (see FIG. 1). The motor 104 is mounted on a mounting surface on the front side in the depth direction Y of the wiring board 105 disposed in the housing 102. The motor 104 is a driving source of the pointer 1 and has a rotating shaft 106 that can be driven to rotate. The rotating shaft 106 constitutes the rotor shaft of the motor 104. Further, the vehicle display device 100 includes a light source 107 mounted on a mounting surface between the motor 104 and the wiring board 105, and the rotation shaft 106 has the light source with respect to the pointer optical axis direction Y1 (depth direction Y). 107 is provided at a position opposed to 107, and extends along the pointer optical axis direction Y1. The motor 104 and the light source 107 are mounted on the mounting surface of the wiring board 105 and accommodated in the housing 102 (see FIG. 1). The light source 107 emits light toward the front side in the depth direction Y (pointer optical axis direction Y1). That is, here, the light irradiation direction of the light source 107, in other words, the optical axis direction of the light source 107 is a direction along the pointer optical axis direction Y1. The light source 107 includes, for example, an LED (Light Emitting Diode) element, but is not limited thereto. The rotating shaft 106 of the present embodiment is formed of a light-transmitting resin material that transmits light. The rotating shaft 106 is opposed to the light source 107 in the depth direction Y (pointer optical axis direction Y1) and from the motor 104 to the depth direction Y. And projecting on the front surface side in the depth direction Y so as to extend in a columnar shape. The rotary shaft 106 has the pointer 1 connected to the end opposite to the light source 107 side, that is, the end on the front side in the depth direction Y. The rotation shaft 106 functions as a light guide shaft that guides light emitted from the light source 107 to the pointer 1 side. That is, the rotating shaft 106 enters the light emitted from the light source 107 into the end on the light source 107 side, guides the incident light to the pointer 1 side on the front side in the depth direction Y, and emits it. The pointer 1 is located on the front surface side in the depth direction Y of the dial plate 103, is connected to the rotary shaft 106 and is driven to rotate when driven by the motor 104 and emits light by light from the light source 107.

  More specifically, as shown in FIGS. 2, 3, 4, 5, and 6, the pointer 1 according to the present embodiment includes a pointer base 2 as a connection base, a pointer light emitter 3, and a pointer light shielding. A pointer cap 4 as a body is provided, and the entire pointer luminous body 3 emits light by the light guided through the rotating shaft 106 as described above.

  Specifically, as shown in FIGS. 3, 5, etc., the pointer base 2 connects the rotary shaft 106 and the pointer light emitter 3 and supports the pointer light emitter 3 so as to be integrally rotatable on the rotary shaft 106. It is a support member. The pointer base portion 2 includes a connection plate 21 and a cylindrical shaft portion 22, and these are integrally formed of a light-blocking resin material that blocks light.

  The connection plate 21 is a portion that is provided on the front side of the cylindrical shaft portion 22 in the pointer optical axis direction Y1 and connects the pointer light emitter 3. The connection plate 21 is formed in a substantially circular plate shape, and has an opening 21a, an assembly hole 21b, and a groove 21c. The opening 21a is opened along the pointer optical axis direction Y1, and a cylindrical shaft portion 33 of a pointer light emitter 3 to be described later is inserted. The assembly hole 21b is a part to which the pointer cap 4 is assembled, and here, two are provided. The groove portion 21c is formed in a groove shape along the pointer extending direction X1X, and a pointer prism member 31 of a pointer light emitter 3 to be described later is fitted therein.

  The cylindrical shaft portion 22 is a portion called a soot that connects the rotary shaft 106 and the pointer light emitter 3. The cylindrical shaft portion 22 is formed in a hollow cylindrical shape, and is formed so as to protrude from the connection plate 21 along the back side in the pointer optical axis direction Y1. The cylindrical shaft portion 22 has an internal hollow portion that penetrates the connection plate 21 and opens on both sides in the pointer optical axis direction Y1 (see FIG. 5 and the like). The cylindrical shaft portion 22 has a rotating shaft 106 fitted to the opening on the back side in the pointer optical axis direction Y1, and the cylindrical shaft portion 33 of the pointer light emitter 3 is fitted in the opening 21a on the front side in the pointer optical axis direction Y1. By inserting the pointer prism member 31 into the groove 21c, the rotating shaft 106 and the pointer light emitter 3 are connected.

  The pointer light emitter 3 is a light emitting member that emits light by light guided through the rotating shaft 106. The pointer light emitter 3 of the present embodiment includes a pointer prism member 31 as a first light transmitting member, a pointer indicating member 32 as a second light transmitting member, a cylindrical shaft portion 33, and a supported portion 34. , And these are combined.

  The pointer prism member 31 is an optical member that refracts and disperses light. The pointer prism member 31 extends along the pointer extending direction X1 with a light-transmitting material, and is formed to become narrower as the distance from the rear end portion 31e, which is one end portion of the pointer extending direction X1, is increased. The pointer prism member 31 includes a main body 31a, a first reflecting surface 31b, a second reflecting surface 31c, and an emitting surface 31d, and these are integrally formed by a light-transmitting resin material that transmits light. It is formed.

  The main body portion 31a is a plate-like member that extends from the cylindrical shaft portion 33 along the pointer extending direction X1 and is formed in a plate shape. The main body portion 31 a is formed to be thinner as it moves away from the cylindrical shaft portion 33. The main body portion 31a is formed with a pair of plane portions having a substantially triangular shape, and the plane portions are provided along the pointer optical axis direction Y1. The main body portion 31a has a flat upper surface portion 31f formed on the front side in the pointer optical axis direction Y1, and a flat bottom surface portion 31g formed on the back side in the pointer optical axis direction Y1.

  The first reflecting surface 31b is a portion that reflects incident incident light. The 1st reflective surface 31b is provided in the rear-end part 31e of the main-body part 31a. The first reflecting surface 31b is formed, for example, in a shape in which the rear end portion 31e of the main body portion 31a is cut obliquely along a direction intersecting the pointer optical axis direction Y1. The first reflective surface 31b is formed in a flat shape so that the angle formed with the bottom surface portion 31g is an acute angle (for example, about 45 °). The first reflecting surface 31b reflects incident light incident through the cylindrical shaft portion 33 toward the bottom surface portion 31g.

  The second reflecting surface 31c is a part that diffuses and reflects light. The 2nd reflective surface 31c is provided in the bottom face part 31g of the main-body part 31a. In other words, the second reflecting surface 31c is provided on the bottom surface portion 31g (end portion) located on the opposite side of the pointer indicating member 32 in the pointer optical axis direction Y1. The 2nd reflective surface 31c has the diffusion layer 31h formed in the uneven | corrugated shape (refer FIG. 6 etc.). In the diffusion layer 31h, for example, a diffusible colorant is formed on the bottom surface portion 31g by hot stamping, painting, vapor deposition, or the like. The diffusion layer 31h can freely set the light emission color (display color) of the pointer light emitter 3 according to the colored color. The second reflecting surface 31c extends along the pointer extending direction X1 in accordance with the shape of the main body 31a. The second reflecting surface 31c diffuses incident light reflected by the first reflecting surface 31b and reflects it toward the pointer indicating member 32 along the pointer optical axis direction Y1.

  The exit surface 31d is a portion that emits light. The emission surface 31d is provided on the upper surface portion 31f of the main body portion 31a. In other words, the emission surface 31d is provided on the upper surface portion 31f (end portion) on the pointer indicating member 32 side in the pointer optical axis direction Y1. The emission surface 31d extends along the pointer extending direction X1 in accordance with the shape of the main body 31a. The emission surface 31 d is connected to the connection surface 32 a of the pointer indicating member 32. The exit surface 31d emits incident light diffused and reflected by the second reflecting surface 31c to the pointer indicating member 32 side along the pointer optical axis direction Y1.

  The pointer indicating member 32 is an optical member that transmits light. The pointer indicating member 32 extends by a light transmissive material along the pointer extending direction X1 to a length equal to or longer than the pointer prism member 31 and is viewed from the viewing position EP. It is formed in the plate shape which has. That is, the pointer indicating member 32 is formed in an elongated linear plate shape along the pointer extending direction X1. The pointer indicating member 32 has a visual recognition surface 32b formed in an arc shape (R shape) along the pointer width direction Z1. That is, the viewing surface 32b is formed in a convex shape that protrudes toward the viewing position EP. The viewing surface 32b is disposed toward the front side in the pointer optical axis direction Y1, that is, toward the viewing position EP. The pointer indicating member 32 has a connection surface 32 a on the pointer prism member 31 side connected to the exit surface 31 d of the pointer prism member 31. In the pointer indicating member 32, for example, the exit surface 31d of the pointer prism member 31 is connected along the pointer extending direction X1 substantially at the center of the connecting surface 32a in the pointer width direction Z1. That is, the pointer indicating member 32 is provided in a line shape along the pointer extending direction X1 in such a manner that the emission surface 31d of the pointer prism member 31 is substantially in the center of the connecting width 32a of the pointer indicating member 32 in the pointer width direction Z1. In the pointer light emitter 3, the pointer prism member 31 and the pointer indicating member 32 are formed in a T shape in a cross-sectional view along the pointer width direction Z1 and the pointer optical axis direction Y1. The pointer indicating member 32 covers the exposed portion of the pointer prism member 31 from the viewing surface 32b side. The pointer indicating member 32 covers, for example, the pointer prism member 31 so as not to be directly visually recognized from the visual position EP within a movable range in which the pointer 1 can rotate (see FIG. 6). The pointer indicating member 32 adjusts the ratio of the length in the pointer width direction Z1 of the pointer indicating member 32 and the length of the pointer prism member 31 in the pointer optical axis direction Y1, so that the pointer prism member 31 directly from the visual position EP. It can cover so that it is not visually recognized.

  As for the pointer instruction | indication member 32, the half mirror 32c as a reflecting member is provided in the visual recognition surface 32b. The half mirror 32c is formed on the viewing surface 32b by, for example, hot stamping, painting, vapor deposition, or the like. The half mirror 32c reflects a part of incident light and transmits the rest of the incident light. For example, the half mirror 32c reflects incident light incident from the pointer optical axis direction Y1 as reflected light and transmits part of the incident light as transmitted light. The half mirror 32c is, for example, a reflecting member having substantially the same reflected light intensity and transmitted light intensity. When the front side in the pointer optical axis direction Y1, that is, the viewing position EP side is brighter than the back side in the pointer optical axis direction Y1, the half mirror 32c is visually recognized as a mirror surface (for example, a metal surface) from the viewing position EP. On the other hand, when the front side in the pointer optical axis direction Y1, that is, the viewing position EP side is darker than the back side in the pointer optical axis direction Y1, the half mirror 32c is visually recognized as a translucent member from the viewing position EP. In the present embodiment, when the pointer prism member 31 is not emitting light, the half mirror 32c is visually recognized as a mirror surface (for example, a metal surface) from the viewing position EP. On the other hand, in the half mirror 32c, when the pointer prism member 31 emits light, the line light emitted in the line shape of the pointer prism member 31 is visually recognized from the viewing position EP, and portions other than the line light of the half mirror 32c are visible. Visible as a mirror surface.

  The cylindrical shaft portion 33 is a portion formed in a cylindrical shape from the rear end portion 31e of the pointer prism member 31 along the pointer optical axis direction Y1. The cylindrical shaft portion 33 is inserted inside the cylindrical shaft portion 22 of the pointer base 2 and is disposed on the same straight line as the rotation shaft 106 of the motor 104 along the pointer optical axis direction Y1. In the cylindrical shaft portion 33, light guided through the rotation shaft 106 is incident along the pointer optical axis direction Y1.

  The supported portion 34 is a portion that is supported by the connection plate 21 of the pointer base 2 and is formed to project from the rear end portion 31e of the main body 31a of the pointer prism member 31 on both sides in the pointer width direction Z1 in a plate shape. (See FIG. 3 etc.). Each supported portion 34 is provided on the front side of the cylindrical shaft portion 33 in the pointer optical axis direction Y1. Each supported portion 34 is formed with an assembly hole 34a. Each assembly hole 34a is a part to which the pointer cap 4 is assembled, and here, one in each supported portion 34 is provided in total. Each assembly hole 34a is positioned on the same straight line as each assembly hole 21b of the connection plate 21 of the pointer base 2 along the pointer optical axis direction Y1.

  The pointer cap 4 is a member that blocks light leaking from the pointer prism member 31. The pointer cap 4 is formed in a lid shape from a light shielding material and covers a portion including the rear end portion 31e of the pointer prism member 31. The pointer cap 4 includes a cylinder portion 41, an upper surface portion 42, a plurality of protrusions 43, and a plurality of claw portions (not shown). The cylinder part 41 is a part formed in a cylindrical shape along the pointer optical axis direction Y1. The cylindrical portion 41 has an opening 41a on one side of the pointer extending direction X1, and the pointer prism member 31 extends in the pointer extending direction X1 through the opening 41a. The upper surface portion 42 is a portion that closes the front surface side of the cylindrical portion 41 in the pointer optical axis direction Y1. Each projection 43 is a portion provided on the tube portion 41 side of the upper surface portion 42 and formed in a projection shape along the pointer optical axis direction Y1, and two are provided here. Each projection 43 is positioned on the same straight line as each assembly hole 34 a of the supported portion 34 and each assembly hole 21 b of the connection plate 21. Each protrusion 43 is inserted into each assembly hole 21 b of the connection plate 21 and each assembly hole 34 a of the supported portion 34 in a state where the pointer cap 4 is assembled to the pointer light emitter 3 and the pointer base 2. Each claw portion is provided inside the end portion on the opposite side of the upper surface portion 42 of the cylindrical portion 41, and is engaged with the outer peripheral edge of the connection plate 21 of the pointer base portion 2. In the pointer cap 4, each projection 43 is inserted into each assembly hole 34 a of the supported portion 34 of the pointer light emitter 3 and each assembly hole 21 b of the connection plate 21 of the pointer base 2, and each claw portion is a pointer base 2. By being locked to the outer peripheral edge of the connecting plate 21, the pointer light emitter 3 and the pointer base 2 are assembled. The pointer cap 4 is assembled to the pointer light emitter 3 and the pointer base 2 and extends from the rear end portion 31e of the pointer prism member 31 to the front side in the pointer optical axis direction Y1, both sides in the pointer width direction Z1, and the pointer extension. Light leaking from the rear side of the current direction X1 is shielded.

  In the pointer 1 configured as described above, the cylindrical shaft portion 33 of the pointer light emitter 3 is inserted into the cylindrical shaft portion 22 of the pointer base portion 2, and the pointer prism member 31 is fitted into the groove portion 21 c of the connection plate 21. In the pointer 1, each protrusion 43 of the pointer cap 4 is inserted into each assembly hole 34 a of the supported portion 34 of the pointer light emitter 3 and each assembly hole 21 b of the connection plate 21 of the pointer base 2. Each of the claw portions 4 is hooked and locked to the outer peripheral edge of the connection plate 21 of the pointer base 2. By this locking, the pointer 1 is integrated with the pointer base 2, the pointer light emitter 3, and the pointer cap 4. The pointer 1 has a rotating shaft 106 fitted inside the cylindrical shaft portion 22 of the pointer base 2 in a state where the pointer base 2, the pointer light emitter 3, and the pointer cap 4 are integrated. It is connected so that it can rotate integrally.

  In the pointer 1, the light incident on the cylindrical shaft portion 33 of the pointer light emitter 3 from the light source 107 via the rotation shaft 106 is reflected by the first reflecting surface 31 b of the pointer prism member 31. In the pointer 1, the light reflected by the first reflecting surface 31 b is guided to the distal end side of the pointer prism member 31 along the pointer extending direction X <b> 1 by the main body portion 31 a of the pointer prism member 31. At this time, in the pointer 1, the light guided to the distal end side of the main body portion 31a of the pointer prism member 31 is diffused and reflected by the second reflecting surface 31c, and is emitted from the emitting surface 31d along the pointer optical axis direction Y1. . Since the pointer 1 is formed so as to narrow toward the tip side from the first reflecting surface 31b of the pointer prism member 31, the tip portion is diffused and reflected by the second reflecting surface 31c while the light reflected by the first reflecting surface 31b is diffused and reflected. The main body 31a of the pointer prism member 31 is caused to emit light uniformly. In the pointer 1, the light emitted from the emission surface 31d passes through the pointer instruction member 32 along the pointer optical axis direction Y1. As a result, as shown in FIG. 7, the pointer 1 emits light in a line along the pointer extending direction X <b> 1 substantially at the center of the viewing surface 32 b of the pointer indicating member 32 when viewed from the viewing position EP in the light emitting state. The line light of the member 31 is visually recognized. The pointer 1 covers the rear end portion 31 e of the pointer prism member 31 with the pointer cap 4, thereby blocking leakage light among the light guided through the rotation shaft 106. On the other hand, as shown in FIG. 8, the pointer prism member 31 is not visually recognized when viewed from the viewing position EP in the non-light-emitting state, and the entire half mirror 32c of the pointer indicating member 32 is a mirror surface (for example, a metal surface). As visible.

  As described above, the pointer 1 according to the embodiment includes the pointer light emitter 3 having the pointer prism member 31 and the pointer instruction member 32. The pointer prism member 31 extends along the pointer extending direction X1 with a light-transmitting material, and is formed to be thinner as the distance from the rear end portion 31e, which is one end portion of the pointer extending direction X1, is increased. The pointer indicating member 32 is formed in a plate shape along the pointer width direction Z1 that extends along the pointer extending direction X1 by the light transmissive material and intersects the pointer extending direction X1. The pointer indicating member 32 has a connecting surface 32a on the pointer prism member 31 side connected to the pointer prism member 31, and covers the exposed portion of the pointer prism member 31 from the viewing surface 32b side opposite to the connecting surface 32a. The pointer prism member 31 includes a first reflecting surface 31b, a second reflecting surface 31c, and an exit surface 31d. The first reflecting surface 31b is provided at the rear end portion 31e of the pointer prism member 31 and reflects incident light. The first reflecting surface 31b is provided on the bottom surface 31g, which is the end opposite to the pointer indicating member 32 in the pointer optical axis direction Y1 that is the optical axis direction of the incident light, and is reflected by the first reflecting surface 31b. Incident light is reflected toward the pointer indicating member 32 along the pointer optical axis direction Y1. The exit surface 31d is provided on the upper surface portion 31f that is the end portion on the pointer indicating member 32 side in the pointer optical axis direction Y1, is connected to the connection surface 32a of the pointer indicating member 32, and is incident on the second reflecting surface 31c. Light is emitted to the pointer indicating member 32 side along the pointer optical axis direction Y1.

  With this configuration, the pointer 1 and the vehicle display device 100 are formed so that the pointer prism member 31 becomes narrower as the distance from the first reflecting surface 31b increases. Therefore, incident light incident from the first reflecting surface 31b is transmitted by the second reflecting surface 31c. It can be converged toward the tip while reflecting. As a result, the pointer 1 and the vehicle display device 100 can uniformly emit the pointer prism member 31. Further, in the pointer 1 and the vehicle display device 100, when the pointer light emitter 3 is not emitting light (non-light emitting state), the pointer prism on the side opposite to the visual recognition surface 32b is seen when the visual recognition surface 32b of the pointer indicating member 32 is visually recognized. It can suppress that member 31 is visually recognized. With this configuration, the pointer 1 and the vehicle display device 100 can visually recognize the plate-shaped pointer indicating member 32 in a non-light emitting state with the pointer prism member 31 hidden from the driver (occupant). It can be visually recognized as if it is formed thin, and the design can be improved. On the other hand, in the state in which the pointer 1 and the vehicle display device 100 emit light (light emission state), the light emitted from the emission surface 31d of the pointer prism member 31 indicates the pointer along the pointer optical axis direction Y1. The member 32 is transmitted. By this light emission, the pointer 1 and the vehicle display device 100 can cause the pointer prism member 31 to emit light in a line shape from the inside (back side) of the pointer instruction member 32 when viewed from the visual recognition position EP. By this light emission, the pointer 1 and the vehicle display device 100 can emit the pointer light emitter 3 in a novel manner. As a result, the pointer 1 and the vehicle display device 100 can realize visual recognition based on the metallic tone of the thin plate in the non-light-emitting state and visual recognition based on a novel line-shaped aspect in the light-emitting state, and can improve the design. .

  In the pointer 1, the pointer indicating member 32 includes a half mirror 32c that is provided on the viewing surface 32b and reflects part of incident light and transmits the remainder of the incident light. With this configuration, when the pointer prism member 31 is not emitting light, the pointer indicating member 32 allows the entire half mirror 32c to be viewed as a mirror surface (for example, a metal surface) from the viewing position EP and to be viewed as a single flat plate. Can do. In addition, when the pointer prism member 31 emits light, the pointer indicating member 32 has a mirror surface (for example, a metal surface) as a single flat plate from the viewing position EP and emits light in a line shape by the pointer prism member 31. Line light is visible. As a result, the pointer 1 can be visually recognized in a novel manner. In addition, since the pointer prism member 31 is connected to the connection surface 32a, the pointer prism member 31 can act as a reinforcing rib. With this operation, the pointer indicating member 32 can suppress thermal deformation of the pointer indicating member 32 when heat is applied by hot stamping or the like when the half mirror 32c is formed. Further, since the volume of the pointer indicating member 32 increases due to the connection of the pointer prism member 31, it is possible to enhance the heat radiation effect when heat is applied by hot stamping or the like, and the pointer indicating member 32 is prevented from being thermally deformed. be able to.

  In the pointer 1, the second reflecting surface 31c has a diffusion layer 31h formed in an uneven shape. With this configuration, the second reflecting surface 31c can uniformly emit the main body 31a of the pointer prism member 31 by diffusing the incident light reflected by the first reflecting surface 31b with the diffusion layer 31h.

[Modification]
Next, a modification of the embodiment will be described. Although the pointer indicating member 32 has been described with respect to the example in which the visual recognition surface 32b is formed in an arc shape protruding toward the visual recognition position EP, it is not limited thereto. For example, as shown in FIG. 9, the pointer indicating member 32A forms the viewing surface 32b in a flat shape along the pointer width direction Z1 and chamfers the corner of the viewing surface 32b in the pointer width direction Z1 to form the C surface. May be. In the pointer indicating member 32A, a half mirror 32c is formed on a viewing surface 32b that is planar and formed on the C surface. With this configuration, the pointer indicating member 32A can visually recognize the visual surface 32b on which the half mirror 32c is formed by highlighting the metal surface from the visual position EP. Further, as shown in FIG. 10, the pointer indicating member 32B may be formed with a viewing surface 32b in a planar shape along the pointer width direction Z1. In the pointer indicating member 32B, a half mirror 32c is formed on a viewing surface 32b formed in a planar shape. With this configuration, the pointer indicating member 32B can visually recognize the viewing surface 32b on which the half mirror 32c is formed as a metal surface from the viewing position EP.

  The reflecting member is not limited to the half mirror 32c. For example, the reflecting member may be other than the half mirror 32c as long as one surface of the reflecting member looks like a mirror and the other surface can be seen through the reflecting member.

[Reference example]
Next, a reference example of the embodiment will be described. As shown in FIGS. 11, 12, 13, 14, 15, 16, and 17, the pointer 201 of this reference example includes a pointer stem 202 as a connection base, a pointer light emitter 203, and a balancer 204. And a pointer cap 205 as a pointer light-shielding body, and the entire pointer luminous body 203 emits light by the light guided through the rotating shaft 106 as described above.

  Specifically, the pointer stem 202 is a connection support member that connects the rotary shaft 106 and the pointer light emitter 203 and supports the pointer light emitter 203 so as to be integrally rotatable with the rotary shaft 106. The pointer stem 202 includes a base portion 221, a cylindrical shaft portion 222, and a balancer support portion 223, which are integrally formed of a light-blocking resin material that blocks light. The base 221 is a portion that is formed in a plate shape extending along the pointer extending direction X1 and that supports the pointer light emitter 203 on a surface on one side in the pointer optical axis direction Y1. In the base portion 221, a portion to which the cylindrical shaft portion 222 is connected is formed in a substantially circular plate shape, and an assembly hole portion 221a is formed in the substantially circular plate shape portion (see FIG. 12 and the like). The assembly hole 221a is a part to which the pointer cap 205 is assembled. The cylindrical shaft portion 222 is a portion that connects the rotating shaft 106 and the pointer light emitter 203 and is formed in a hollow cylindrical shape. The cylindrical shaft 222 has a rotary shaft 106 fitted into one end opening in the pointer optical axis direction Y1, and a shaft 231a of a pointer light emitter 203 described later fitted into the other end opening in the pointer optical axis direction Y1. As a result, the rotating shaft 106 and the shaft portion 231a are connected so as to be integrally rotatable. The balancer support part 223 is a part that supports the balancer 204, and is provided on the opposite side of the pointer extending direction X1 from the base part 221.

  The pointer light emitter 203 is a light emitting member that emits light by light guided through the rotating shaft 106, and constitutes a pointer main body. The pointer light emitter 203 of this embodiment includes a pointer prism member 231, a light transmissive cap 232, and a diffusion layer 233, and is configured by combining these. The pointer prism member 231 is formed of a light transmissive material so as to extend along the pointer extending direction X1, and the light incident on the shaft portion 231a is front-side along the pointer optical axis direction Y1 from the first emission surface 231e. Is emitted. The pointer prism member 231 includes a shaft portion 231a, a main body portion 231b, a supported portion 231c, a light guide hollow portion 231d, and a first emission surface 231e, and these are light transmissive resins that transmit light. It is integrally formed of materials. The shaft portion 231a is a portion formed in a columnar shape along the pointer optical axis direction Y1, and as described above, is connected to the rotary shaft 106 so as to be integrally rotatable via the cylindrical shaft portion 222 of the pointer stem 202 ( (See FIG. 14). The shaft portion 231a functions as an incident portion on which light guided through the rotation shaft 106 enters along the pointer optical axis direction Y1. The main body portion 231b is a portion that extends from the end portion of the shaft portion 231a along the pointer extending direction X1. In the main body portion 231b, a surface opposite to the shaft portion 231a side with respect to the pointer optical axis direction Y1 forms a first emission surface 231e. The plurality of supported portions 231c are portions that are supported by a substantially circular plate-like portion of the base portion 221 of the pointer stem 202, and each has an assembly hole portion 231f (see FIG. 12 and the like). The assembly hole portion 231f is a portion where the pointer cap 205 is assembled. The light guide hollow portion 231d is a portion formed in a hollow shape on the connecting portion between the shaft portion 231a and the main body portion 231b, here, on the main body portion 231b side of the connecting portion (see FIG. 12 and the like). The light guide hollow portion 231d is a reflective light guide surface whose surface forming the light guide hollow portion 231d reflects and diffuses the light incident on the shaft portion 231a in the pointer extending direction X1 and guides it to the entire body portion 231b. Function as. The first exit surface 231e receives light that is incident on the shaft portion 231a from the rotary shaft 106 and reflected and diffused in the pointer extending direction X1 by the light guide hollow portion 231d and guided to the main body portion 231b in the pointer prism member 231. It is a surface that exits to the front side of the pointer optical axis direction Y1 along the pointer optical axis direction Y1.

  The light transmissive cap 232 extends along the pointer extending direction X1 by the light transmissive material. The light transmissive cap 232 is formed to face the first emission surface 231e with respect to the pointer optical axis direction Y1, and the light emitted from the first emission surface 231e and incident on the incident surface 232b is transmitted to the second emission surface 232c. To the front side along the pointer optical axis direction Y1. The light transmissive cap 232 has a main body 232a, an incident surface 232b, and a second light exit surface 232c, and these are integrally formed of a light transmissive resin material that transmits light. The main body 232a is formed to extend along the pointer extending direction X1 in accordance with the shape of the main body 231b of the pointer prism member 231. In the main body 232a, a surface facing the first emission surface 231e of the pointer prism member 231 with respect to the pointer optical axis direction Y1, that is, a back surface in the pointer optical axis direction Y1 forms an incident surface 232b. On the other hand, the main body 232a has a surface opposite to the surface facing the first emission surface 231e of the pointer prism member 231 with respect to the pointer optical axis direction Y1, that is, a surface on the front side in the pointer optical axis direction Y1. The second emission surface 232c is configured, and the second emission surface 232c functions as a design surface on the front surface side in the pointer optical axis direction Y1. The main body 232a is formed in a shape with improved design as viewed from the front side in the pointer optical axis direction Y1. In the main body 232a, for example, designs having different widths in the pointer width direction Z1 in the pointer extending direction X1 are formed. Specifically, the main body 232a is formed, for example, in the shape of an arrow, the tip 232d of the pointer extending direction X1 is formed in a hook shape, and the rear end 232e of the pointer extending direction X1 is formed in an arrow feather shape. Is done. In the main body 232a, the length in the pointer width direction Z1 of the distal end portion 232d is equal to the length in the pointer width direction Z1 of the pointer cap 205 described later (see FIG. 16). Further, in the main body 232a, the length of the rear end portion 232e in the pointer width direction Z1 is equal to the length of the pointer cap 205 in the pointer width direction Z1. Further, in the main body 232a, the length in the pointer width direction Z1 of the intermediate portion 232f between the front end portion 232d and the rear end portion 232e is shorter than the length of the pointer cap 205 in the pointer width direction Z1 (see FIG. 15). In addition, the design of the main-body part 232a is not limited to the above-mentioned example, The light transmissive cap 232 may be another design.

  The incident surface 232b is a surface on the light transmitting cap 232 on which light emitted from the first emission surface 231e of the pointer prism member 231 enters. The second emission surface 232c is a surface that emits light incident on the incident surface 232b to the front side in the pointer optical axis direction Y1 along the pointer optical axis direction Y1 in the light-transmitting cap 232. The light transmissive cap 232 is curved and formed in a curved shape so that the second emission surface 232c forms a lens that refracts and diverges light (see FIG. 16 and the like). Here, the second emission surface 232c is opposite to the incident surface 232b with respect to the pointer optical axis direction Y1 in a sectional view along the pointer optical axis direction Y1 and the pointer width direction Z1 (see FIG. 16). That is, it is formed in a convex shape protruding to the emission side. The diffusion layer 233 is a layer that diffuses light. The diffusion layer 233 of the present embodiment is provided in close contact with the first emission surface 231 e of the pointer prism member 231, is emitted from the first emission surface 231 e of the pointer prism member 231, and is incident on the incident surface 232 b of the light transmitting cap 232. Diffuse light. The balancer 204 is a part that adjusts the weight balance with the pointer light emitter 203 supported by the pointer stem 202. The balancer 204 is accommodated and supported by the balancer support portion 223 of the pointer stem 202.

  The pointer cap 205 is a light blocking member that is attached to the pointer light emitter 203 and blocks a part of light. The pointer cap 205 is formed to extend along the pointer extending direction X1 with a light shielding material, covers the pointer prism member 231 from both sides of the pointer width direction Z1, and leaks from the pointer prism member 231 along the pointer width direction Z1. Block out light. The pointer cap 205 includes a shaft cover portion 251 and a slit portion 252 that are integrally formed of a light-blocking resin material that blocks light. The shaft cover portion 251 is formed in a dome shape and is mounted from the first emission surface 231 e side of the pointer prism member 231 to cover a part of the pointer prism member 231. The slit part 252 has a side wall part 252a, and is a part in which a hollow part 252b for accommodating the main body part 231b of the pointer prism member 231 is formed by the side wall part 252a. The slit portion 252 has the main body portion 231b of the pointer prism member 231 accommodated in the hollow portion 252b in a state where the shaft portion cover portion 251 is attached to the pointer prism member 231, and the second portion of the main body portion 231b is accommodated from the opening. The one emission surface 231e and the diffusion layer 233 are exposed to the front side of the pointer optical axis direction Y1, and light leaking from the main body 231b of the pointer prism member 231 along the pointer width direction Z1 is shielded.

  According to the pointer 201 according to the reference example described above, the pointer light emitter 203 and the pointer cap 205 are provided. The pointer light emitter 203 includes a pointer prism member 231, a light transmissive cap 232, and a diffusion layer 233. The pointer prism member 231 is formed of a light transmissive material so as to extend along the pointer extending direction X1, and the incident light is incident on the pointer optical axis direction Y1 intersecting the pointer extending direction X1 from the first emission surface 231e. Emanate along. The light transmissive cap 232 extends along the pointer extending direction X1 by the light transmissive material. The light transmissive cap 232 has a design in which the width of the pointer width direction Z1 is different in the pointer extending direction X1 in the pointer extending direction X1 with respect to the pointer optical axis direction Y1, and the first emission surface 231e is formed. The light emitted from and incident from the second emission surface 232c is emitted along the pointer optical axis direction Y1. The diffusion layer 233 diffuses light emitted from the first emission surface 231e and incident on the light transmissive cap 232. The pointer cap 205 is formed of a light-shielding material so as to extend along the pointer extending direction X1, and the pointer prism member 231 extends from both sides of the pointer width direction Z1 intersecting the pointer optical axis direction Y1 and the pointer extending direction X1. Light leaking from the covering pointer prism member 231 along the pointer width direction Z1 is blocked. The light transmissive cap 232 emits light from the second emission surface 232c with respect to at least the pointer width direction Z1 by the formed design.

  With this configuration, in the pointer 201 and the vehicle display device 100, in the pointer light emitter 203, light incident on the pointer prism member 231 is emitted from the first emission surface 231 e along the pointer optical axis direction Y <b> 1 and the light transmissive cap 232. Is incident on the second emission surface 232c and emitted along the pointer optical axis direction Y1, so that the entire pointer luminous body 203 emits light. At this time, in the pointer 201 and the vehicle display device 100, the light leaking from the pointer prism member 231 along the pointer width direction Z1 is blocked by the side wall portion 252a of the pointer cap 205, etc. By limiting the light emitting area other than the light emitting area to the side visually recognized by the driver or the like, the outline of the pointer light emitter 203 can be shown sharply. In addition, the pointer 201 and the vehicle display device 100 can emit light from the light source 107 efficiently to a side visually recognized by a driver or the like, can suppress loss, and suppress a decrease in luminance. Can do. In addition, the pointer 201 and the vehicle display device 100 can emit light in a novel manner by the diffusion of light by the diffusion layer 233 and the design of the light-transmitting cap 232.

1 Pointer (Guideline for vehicle display device)
3 Pointer light emitter 31 Pointer prism member (first light transmitting body)
31b 1st reflective surface 31c 2nd reflective surface 31d Output surface 31e Rear end part 31g Bottom part (end part)
31f Upper surface part (end part)
31h Diffusion layer 32a Connection surface 32b Viewing surface 32c Half mirror (reflection member)
32, 32A, 32B Pointer indicating member (second light transmitting body)
X1 Pointer extending direction Y1 Pointer optical axis direction Z1 Pointer width direction 100 Vehicle display device 102 Case 104 Motor (drive unit)
106 Rotating shaft 107 Light source

Claims (4)

A first light-transmitting body that extends along the direction of extension of the pointer by a light-transmitting material, and that is formed thinner as it moves away from the rear end that is one end in the direction of extension of the pointer; Depending on the material, it extends along the pointer extending direction and is formed in a plate shape along the pointer width direction intersecting the pointer extending direction, and the connection surface on the first light transmitting body side is connected to the first light transmitting body. And a second light transmitting body that covers the exposed portion of the first light transmitting body from the viewing surface side opposite to the connection surface,
The first light transmitting body is:
A first reflection surface provided at the rear end portion for reflecting incident incident light;
In the pointer optical axis direction that is the optical axis direction of the incident light, the incident light reflected by the first reflecting surface is provided in the direction opposite to the second light transmission body in the pointer optical axis direction. A second reflecting surface that reflects along the second light transmissive body side,
The incident light that is provided at an end portion on the second light transmitting body side in the direction of the pointer optical axis, is connected to the connection surface of the second light transmitting body, and is reflected by the second reflecting surface. An indicator for a vehicle display device, comprising: an exit surface that exits toward the second light transmitting body along the direction.   The pointer for a vehicle display device according to claim 1, wherein the second light transmitting body includes a reflecting member that is provided on the viewing surface and reflects a part of incident light that is incident and transmits the remainder of the incident light.   The pointer for a vehicle display device according to claim 1, wherein the second reflecting surface has a diffusion layer formed in an uneven shape. A light source that emits light;
A drive unit having a rotation shaft capable of being rotated;
A housing for housing the light source and the driving unit;
A pointer connected to the rotary shaft and driven to rotate;
The guidelines are:
A first light-transmitting body that extends along the direction of extension of the pointer by a light-transmitting material, and that is formed thinner as it moves away from the rear end that is one end in the direction of extension of the pointer; Depending on the material, it extends along the pointer extending direction and is formed in a plate shape along the pointer width direction intersecting the pointer extending direction, and the connection surface on the first light transmitting body side is connected to the first light transmitting body. And a second light transmitting body that covers the exposed portion of the first light transmitting body from the viewing surface side opposite to the connection surface,
The first light transmitting body is:
A first reflecting surface provided at the rear end portion for reflecting incident light incident from the light source;
In the pointer optical axis direction that is the optical axis direction of the incident light, the incident light reflected by the first reflecting surface is provided in the direction opposite to the second light transmission body in the pointer optical axis direction. A second reflecting surface that reflects along the second light transmissive body side,
The incident light that is provided at an end portion on the second light transmitting body side in the direction of the pointer optical axis, is connected to the connection surface of the second light transmitting body, and is reflected by the second reflecting surface. And a light emitting surface that emits light toward the second light transmitting body along the direction.

Images