JP2018040625A - Vehicle display device - Google Patents

Abstract

An object of the present invention is to provide a vehicle display device that can appropriately cause a decorative light emitting part to emit light. A vehicle display device 1 includes a light source section 100 that irradiates light, and a plate that includes a transmission region 92 that transmits and diffuses light from the light source section 100 within a light shielding region 91 that blocks the light from the light source section 100. a hollow protruding main body part 111 that protrudes from the plate-like member 9 along the direction of light irradiation by the light source part 100; The decorative protrusion 110 has a diffused transmitting part 112 that transmits and diffuses the light irradiated into the protruding main body 111 through the region 92. 111 and whose light transmission width along the width direction of the transmission region intersecting the irradiation direction is opposite to the irradiation direction. It is characterized by differing depending on the distance traveled. [Selection diagram] Figure 2

Description

  The present invention relates to a vehicle display device.

  As a conventional vehicle display device, for example, Patent Document 1 discloses an instrument that includes at least one instrument, and includes a turnback arranged around the instruments, a case, and a back cover. Yes. This instrument is composed of a light guide ring in which a light guide and a light shield are integrally formed, a light source, and a prism disposed between the light guide ring and the light source, and covers the outer periphery of the dial of the instrument. In this way, the light-emitting portion is arranged in a ring shape, and the light guide ring is fixed in the vicinity of the tip of the turn-around.

JP 2013-077651 A

  By the way, the above-described instrument described in Patent Document 1 has room for further improvement in terms of, for example, suppression of light emission unevenness of the light emitting unit.

  This invention is made | formed in view of said situation, Comprising: It aims at providing the vehicle display apparatus which can make a decorative light emission part light-emit appropriately.

  In order to achieve the above object, a vehicle display device according to the present invention includes a light source unit that emits light, and a transmission that transmits and diffuses light from the light source unit in a light shielding region that blocks light from the light source unit. A plate-like member including a region, a protruding main body portion that protrudes from the plate-like member along the light irradiation direction of the light source portion and is provided in a hollow shape, and the light source portion provided on the protruding front end side of the protruding main body portion And a decorative protrusion having a diffuse transmission part that transmits and diffuses the light applied to the inside of the projecting main body part through the transmission region, and the transmission region is in the light irradiation direction. The diffuse transmission part provided at the inside of the projecting main body part, the light transmission width along the transmission region width direction intersecting with the light irradiation direction is opposite to the light irradiation direction, and It corresponds to the distance along the irradiation direction of the light with the transmission region. And wherein the different Te.

  In the vehicle display device, the light transmission width is relatively wide at a position where a distance along the light irradiation direction between the diffuse transmission part and the transmission region is relatively long, The distance along the irradiation direction of the light with the transmission region may be relatively narrow at a relatively short position.

  In the vehicle display device, the projecting main body portion includes an outer annular portion formed in an annular shape, and an inner annular portion formed in an annular shape at an interval from the outer annular portion inside the outer annular portion. It is formed in a hollow shape, and the diffusion transmission part is formed in an annular shape between the outer annular part and the inner annular part, and connects the outer annular part and the inner annular part.

  Moreover, in the said vehicle display apparatus, the said decoration protrusion part shall have the decoration member assembled | attached to the said protrusion main-body part adjacent to the said diffuse transmission part.

  In the vehicle display device according to the present invention, the decorative light emitting part is configured by transmitting and diffusing the light irradiated from the light source part through the transmission region to the inside of the projecting main body part by the diffusion transmission part of the decoration projection part. Is done. The vehicle display device adjusts the amount of light according to the distance between the diffuse transmission portion and the transmission region in the transmission region by changing the light transmission width of the transmission region according to the distance between the diffusion transmission portion and the transmission region. Therefore, it is possible to suppress the occurrence of unevenness in the light emission of the decorative light emitting portion and to emit light substantially uniformly. As a result, the vehicle display device has an effect that the decorative light emitting part can emit light appropriately.

FIG. 1 is an exploded perspective view illustrating a schematic configuration of a vehicle display device according to an embodiment. FIG. 2 is a partial cross-sectional view illustrating a schematic configuration of the vehicle display device according to the embodiment. FIG. 3 is an exploded perspective view illustrating a schematic configuration of the vehicle display device according to the embodiment. FIG. 4 is a partial perspective view including a decorative protrusion of the vehicle display device according to the embodiment. FIG. 5 is a partial front view of the dial of the vehicle display device according to the embodiment.

  Embodiments according to the present invention will be described below in detail with reference to the drawings. In addition, this invention is not limited by this embodiment. In addition, constituent elements in the following embodiments include those that can be easily replaced by those skilled in the art or those that are substantially the same.

  In FIG. 3 described below, illustration of the transparent cover and the pressing member is omitted. 2, FIG. 3, and FIG. 4 partially illustrate the color of the dial and the like.

[Embodiment]
A vehicle display device 1 according to the present embodiment shown in FIGS. 1 and 2 constitutes a so-called vehicle-mounted meter. For example, the vehicle display device 1 is mounted on an instrument panel provided on a dashboard of the vehicle and is used for driving the vehicle. Various information regarding the vehicle is displayed as information to be performed.

  Note that the width direction X of the vehicle display device 1 shown in FIG. 1 and the like typically corresponds to the vehicle width direction of the vehicle to which the vehicle display device 1 is applied. In the following description, in the width direction X of the vehicle display device 1, the left side (left side in FIG. 1) toward the front surface of the vehicle display device 1 is the left side in the width direction X, and the right side (right side in FIG. 1) is the width direction. X may be called the right side. The depth direction Y of the vehicle display device 1 typically corresponds to the front-rear direction of the vehicle to which the vehicle display device 1 is applied. The front side of the vehicle display device 1 is the side facing the driver's seat of the vehicle in the depth direction Y, and is typically the side visually recognized by the driver sitting in the driver's seat. On the other hand, the back side of the vehicle display device 1 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 1 typically corresponds to the height direction of the vehicle to which the vehicle display device 1 is applied, and is, for example, a direction along the vertical direction. Each direction used in the following description represents a direction in a state where the vehicle display device 1 is assembled to the instrument panel unless otherwise specified.

  Specifically, the vehicle display device 1 includes a display unit 2 that displays various information about the vehicle, and a housing 3 that houses the display unit 2 and the like. Here, as an example, the display unit 2 includes a speedometer 21 that displays the vehicle speed as information about the vehicle, a tachometer 22 that displays the output rotational speed of the power source for travel (illustration of some character information is omitted), A fuel gauge 23 for displaying the remaining amount of fuel, a water temperature gauge 24 for displaying the temperature of the cooling water, a liquid crystal display device 25 for displaying various information as images, and the like are included. The speedometer 21, the tachometer 22, the fuel gauge 23, and the water temperature gauge 24 are vehicular analog instruments that display measurement values related to the vehicle. The display unit 2 is disposed in a housing 3 that accommodates each unit of the vehicle display device 1, and a display surface for various information is exposed on the front side in the depth direction Y. The housing 3 is made of a resin material or the like. The housing 3 is disposed, for example, on the back cover 31 disposed on the back side in the depth direction Y, the case body 32 disposed on the front surface side in the depth direction Y of the back cover 31, and the front surface side in the depth direction Y of the case body 32. The display part 2 is arrange | positioned in the space part divided by these. And the housing | casing 3 exposes the display surface of each display part 2 to the depth direction Y front side through the opening formed in the turning member 33. FIG. Here, the display unit 2 includes a speedometer 21 disposed on the left side in the width direction X, a tachometer 22 disposed on the right side in the width direction X, and a fuel gauge 23, a water temperature gauge 24, and the like. The liquid crystal display device 25 is disposed between them. The vehicle display device 1 further includes a transparent cover 4 that is disposed on the front side in the depth direction Y of the turning member 33 and protects the front side of the display unit 2 in the depth direction Y, and the transparent cover 4 between the turning member 33. The presser member 5 is provided to hold and hold the.

  For example, as shown in FIG. 2, in the speedometer 21, the internal unit 7 is fixed to the wiring board 6 disposed in the housing 3. The internal unit 7 includes a motor 71 that is a drive source of the pointer 8, and a rotating shaft 72 projects from the motor 71. The pointer 8 is connected to the rotating shaft 72 and is driven to rotate when the motor 71 is driven, and characters arranged in the housing 3 according to various measured values related to the vehicle (vehicle speed in the case of the speedometer 21). The predetermined position of the index part for scale drawn on the board 9 is indicated. The dial plate 9 is interposed between the case main body 32 and the turn-back member 33, and is provided with a scale decoration pointed by the pointer 8, various designs relating to the measurement values attached to the scale, It is configured to include decorations such as symbols and character strings. The tachometer 22, the fuel gauge 23, and the water temperature gauge 24 have substantially the same configuration as the speedometer 21.

  More specifically, as shown in FIG. 2 and FIG. 3, the vehicle display device 1 includes a back cover 31, a wiring board 6, a case body 32, a dial 9, from the back side in the depth direction Y toward the front side. The facing member 33, the transparent cover 4, and the pressing member 5 are stacked in this order. In the vehicle display device 1, the wiring board 6 is assembled to the back side of the case body 32 in the depth direction Y, and the back cover 31 is assembled to the case body 32 so as to cover the wiring board 6 from the back side of the depth direction Y. The wiring board 6 is formed in a substantially rectangular plate shape, on which various electronic components and wirings for realizing various functions in the vehicle display device 1 are mounted, and the above-described mounting surface 61 on the front side in the depth direction Y is described above. The internal unit 7, the liquid crystal display device 25, and the like are mounted. The case body 32 has an opening that exposes the liquid crystal display device 25 on the front side in the depth direction Y, an opening that penetrates the rotation shaft 72, and an opening that houses a light source mounted on the mounting surface 61 of the wiring board 6 and forms an optical path of light. Various openings such as are formed. Further, in the vehicle display device 1, the turn-back member 33 is assembled on the front surface side in the depth direction Y of the case main body 32 via the dial 9. As described above, the dial plate 9 is interposed and provided between the case main body 32 and the turn-back member 33, and has various scales, symbols, symbols, and character strings corresponding to the vehicle information displayed by the display unit 2. It is a plate-like member in which etc. were drawn. The dial plate 9 is, for example, a polycarbonate sheet of light-transmitting fabric that transmits and diffuses light, and is printed with dark inks in the shape corresponding to the scales, symbols, symbols, character strings, etc. The above-mentioned scales, symbols, symbols, character strings, etc. are drawn. The dial plate 9 is irradiated with light from the back side, and the irradiated light is transmitted through portions where various scales, designs, symbols, character strings, etc. are drawn, so that the various scales, designs, symbols A character string or the like is lit and displayed. The dial 9 is formed with various openings such as an opening that exposes the liquid crystal display device 25 to the front side in the depth direction Y and an opening that penetrates the rotating shaft 72. The facing member 33 is a frame-like member that covers the end portion of the dial plate 9 and the like and presses the dial plate 9 and the like between the case main body 32 and the display surface of each display unit 2 from the opening in the depth direction as described above. Y is exposed on the front side. The facing member 33 has a protruding frame-like portion 33a that protrudes from the dial 9 side in the depth direction Y front side and is formed in an annular shape so as to surround the entire dial 9, and the depth direction Y of the protruding frame-like portion 33a. The transparent cover 4 and the pressing member 5 are assembled at the front end portion on the front side.

  And the vehicle display apparatus 1 of this embodiment, as shown in FIG.2, FIG.3, FIG.4, FIG.5, the light source part 100 for the light emission decoration part which irradiates light with respect to a light emission decoration part, By providing the dial 9 as a plate-like member and the decorative protrusion 110 that constitutes the light-emitting decorative part, the decorative light-emitting part can emit light appropriately.

  Specifically, the light source unit 100 includes a light source 101 and an annular prism 102 as shown in FIGS. Here, a total of two light source units 100 are provided, one on the depth direction Y back side of the speedometer 21 and one on the depth direction Y back side of the tachometer 22. Since the two light source units 100 have substantially the same configuration, only the speedometer 21 side will be described here. The light source 101 is mounted on the mounting surface 61 of the wiring board 6 and emits light toward the front side in the depth direction Y. That is, here, the light irradiation direction of the light source 101 of the light source unit 100, in other words, the optical axis direction of the light source 101 is a direction along the depth direction Y. Although the light source 101 is comprised by the LED (Light Emitting Diode) element etc., for example, it is not restricted to this. Here, a plurality of light sources 101 are provided at four intervals, here, along an annular shape around the rotation shaft 72 of the motor 71 constituting the speedometer 21. Each light source 101 is accommodated one by one in an opening that is formed on the back side in the depth direction Y of the case body 32 and forms an optical path of light irradiated by the light source 101, and in the opening toward the front side in the depth direction Y. Irradiate light. The annular prism 102 receives light emitted from each light source 101, guides the incident light, and emits the light toward the decorative protrusion 110 described later. The annular prism 102 is formed of a light transmissive resin material such as acrylic resin. The annular prism 102 includes an annular light guide portion 102a formed in an annular shape, and an incident portion 102b protruding from the annular light guide portion 102a toward the back side in the depth direction Y. A plurality of (in this case, four) incident portions 102b are provided at intervals along the annular light guide portion 102a. The annular prism 102 is assembled in an annular housing recess 32 a formed on the front surface side in the depth direction Y of the case body 32. The housing recess 32 a communicates with the opening that forms the optical path of the light source 101. The annular prism 102 is assembled in the housing recess 32a in such a positional relationship that each incident portion 102b faces each light source 101 on the front side in the depth direction Y. The annular prism 102 guides the light emitted from each light source 101 and incident on each incident portion 102b through the annular light guide portion 102a, and the interior of a later-described decorative protruding portion 110 located on the front side in the depth direction Y. Irradiate toward the side.

  As shown in FIGS. 2 and 3, the dial plate 9 is a plate-like member including a transmission region 92 in a light shielding region 91, and is provided between the case main body 32 and the turning member 33 as described above. It is done. The light shielding area 91 is an area where printing is performed with dark ink on a polycarbonate sheet of light-transmitting fabric, and is an area where light from the light source unit 100 is shielded. The transmissive region 92 is a region that is not printed with dark ink in a polycarbonate sheet of light transmissive fabric, and is provided in the light shielding region 91 and is a region that transmits and diffuses light from the light source unit 100. is there. Here, like the light source unit 100 described above, two transmissive regions 92 are provided, one on the depth direction Y back side of the speedometer 21 and one on the depth direction Y back side of the tachometer 22. Since the two transmission regions 92 have substantially the same configuration, only the speedometer 21 side will be described here. The transmission region 92 is formed as a substantially annular region in the light shielding region 91. The transmission region 92 is formed at a position facing the annular prism 102 on the front side in the depth direction Y of the annular prism 102. The transmission region 92 transmits light emitted from the light source 101 and guided by the annular prism 102 and emitted to the front side in the depth direction Y, and is directed to the front side of the depth direction Y, here, the decorative protrusion 110 described later. Diffuse and irradiate. The dial plate 9 is also formed with a measurement display surface 91a, which is a region in which the above-described scales, symbols, symbols, character strings, etc. are drawn in the light shielding region 91. The measurement display surface 91 a is provided on the inner side of each transmission region 92 and on the upper side in the height direction Z between the transmission regions 92, and each display content on the speedometer 21, the tachometer 22, the fuel meter 23, and the water temperature meter 24. It is formed as a region that transmits and diffuses light according to the shape of the scale, symbols, symbols, character strings and the like drawn corresponding to the above. On the other hand, the transmissive region 92 is opposed to the decorative projection 110 described later in the dial 9 in the dial 9 in the depth direction Y front side in the dial 9 and transmits the light. This is a region where light is irradiated toward the side.

  As shown in FIGS. 2, 3, and 4, the decoration projecting portion 110 is a portion that protrudes from the dial 9 along the light irradiation direction of the light source unit 100 and constitutes a light emission decoration portion. Here, two decorative projecting portions 110 are provided in an annular shape so as to surround the entire measurement display surfaces 91 a corresponding to the speedometer 21 and the tachometer 22 inside the protruding frame-shaped portion 33 a. Since the two decorative protrusions 110 have substantially the same configuration, only the speedometer 21 side will be described here. The decorative protrusion 110 is provided at a position facing the transmission region 92 of the dial 9 in the depth direction Y. Here, the decorative protrusion 110 is formed as a part of the turning member 33 located on the front side of the dial 9 in the depth direction Y. Specifically, the decorative projecting portion 110 includes a projecting main body portion 111, a diffusing and transmitting portion 112, and a decorative ring 113 as a decorative member. The decorative projecting portion 110 is formed such that the projecting main body portion 111 and the diffusing and transmitting portion 112 are integrally formed with the projecting frame-shaped portion 33a of the facing member 33, while the decorating ring 113 is different from the projecting frame-shaped portion 33a and the like. The body is formed and assembled to the protruding main body 111.

  The protruding main body 111 protrudes from the dial 9 along the light irradiation direction of the light source unit 100, that is, along the depth direction Y, and is provided in a hollow shape. The protruding main body 111 is formed in an annular shape so as to surround the entire measurement display surface 91a corresponding to the speedometer 21 inside the protruding frame-shaped portion 33a. More specifically, the protruding main body 111 is formed in a hollow shape by an outer annular portion 114 and an inner annular portion 115 that are each formed in an annular shape. The outer annular portion 114 is formed so as to be integrated with the protruding frame-shaped portion 33a at the end portion on one side in the width direction X (left side in the width direction X in the case of the protruding main body portion 111 corresponding to the speedometer 21). The inner annular portion 115 is formed in an annular shape inside the outer annular portion 114 with a space from the outer annular portion 114, and the measurement display surface 91a corresponding to the speedometer 21 is exposed from the inner side of the inner annular portion 115. The protruding main body 111 has an opening 116 for exposing the diffusing and transmitting portion 112 between the outer annular portion 114 and the inner annular portion 115 at the protruding tip side, that is, the end opposite to the dial 9 side. (See particularly FIGS. 2 and 4). The opening 116 is formed in an annular shape between the distal end portion of the outer annular portion 114 and the distal end portion of the inner annular portion 115.

  The diffuse transmission part 112 is provided on the projecting front end side of the projecting main body part 111 formed in a hollow shape by the outer annular part 114 and the inner annular part 115, that is, on the side opposite to the dial 9 side. Furthermore, in other words, the diffuse transmission part 112 is provided at the end of the protruding body part 111 on the front side in the depth direction Y. The diffuse transmission part 112 is provided so as to be exposed in the opening 116 on the projecting tip side of the projecting body part 111 on the hollow inner side of the projecting body part 111 formed by the outer annular part 114 and the inner annular part 115. It is done. The diffuse transmission part 112 is formed in an annular shape along the opening part 116. The decorative projecting portion 110 is configured such that the diffuse transmission portion 112 is positioned in the opening 116 between the outer annular portion 114 and the inner annular portion 115 so that the protruding frame-like portion 33a, the outer annular portion 114, the inner annular portion The entire facing member 33 including each part 115 is insert-molded and integrated, whereby the projecting frame-shaped part 33a, the outer annular part 114, the diffusing and transmitting part 112, and the inner annular part 115 are integrally formed. That is, the diffuse transmission portion 112 functions as a so-called joint plate that is a connecting member that is formed in an annular shape between the outer annular portion 114 and the inner annular portion 115 and connects the outer annular portion 114 and the inner annular portion 115. The hollow interior of the protruding main body 111 formed by the outer annular portion 114 and the inner annular portion 115 and the diffuse transmission portion 112 face the transmission region 92 of the dial 9 in the depth direction Y. The hollow space formed by the outer annular portion 114 and the inner annular portion 115 functions as an optical path space portion 117 (see FIG. 2) for the light irradiated from the transmission region 92 to reach the diffuse transmission portion 112. . The optical path space 117 is formed as an annular space facing the transmission region 92 on the front side in the depth direction Y of the transmission region 92.

  The decorative projecting portion 110 is formed of a polycarbonate resin or the like in which the projecting main body 111 is formed of a light-shielding resin material that shields light together with the projecting frame-shaped portion 33a, while the diffusing and transmitting portion 112 transmits and diffuses light. It is formed of a light transmissive resin material. The diffuse transmission part 112 functions as a so-called diffuser which is a diffusion member that transmits and diffuses light irradiated from the light source part 100 to the optical path space part 117 inside the projecting main body part 111 through the transmission region 92.

  The polycarbonate sheet constituting the transmission region 92 of the dial 9 and the diffusion transmission part 112 described above may be formed of a light-transmitting resin material that transmits and diffuses light. The transmission region 92 and the diffuse transmission part 112 are configured to irradiate bright white light by being formed of a similar color, for example, a white translucent resin material, but is not limited thereto. The polycarbonate sheet and the diffusing and transmitting portion 112 constituting the transmission region 92 of the dial plate 9 are not limited to a white color, and may be formed of a translucent resin material such as a red color, a blue color, or a green color. .

  The decorating ring 113 is a decorating member that decorates the projecting tip of the projecting main body 111, that is, the end opposite to the dial 9 side. The decoration ring 113 is formed in an annular shape along the opening 116 and the diffuse transmission part 112. The decorative ring 113 is assembled to the projecting main body 111 adjacent to the opening 116 and the diffusion / transmission part 112 outside the opening 116 and the diffusion / transmission part 112. Here, the decoration ring 113 is assembled | attached to the outer side annular part 114 which comprises the protrusion main-body part 111, for example, is heat-welded via the latching protrusion part 113a (refer FIG. 2) etc. The decoration ring 113 is formed of, for example, a light-blocking resin material that blocks light, and forms a decoration surface by performing metal plating on the front surface side in the depth direction Y. In addition, the decorative ring 113 functions as a parting part for the annular inner edge part to cut off the outer boundary line of the diffusing and transmitting part 112 and the opening part 116. On the other hand, the inner annular portion 115 that constitutes the projecting main body 111 also functions as a parting portion for observing the inner boundary line of the diffusing and transmitting portion 112 and the opening 116 at the outer edge of the annular shape.

  In the vehicle display device 1 configured as described above, the light emitted from the light source unit 100 through the transmission region 92 to the inside of the projecting main body 111 is transmitted and diffused by the diffusion transmission unit 112 of the decorative projection 110. By doing so, a decorative light emitting region is configured. That is, the light emitted from each light source 101 constituting the light source unit 100 is guided to the front side in the depth direction Y through the annular prism 102, and the optical path space part inside the projecting main body unit 111 through the transmission region 92. 117 is diffused and irradiated. Then, the light diffused and applied to the optical path space 117 inside the projecting main body 111 reaches the diffuse transmission part 112 through the optical path space part 117, is transmitted through the diffusion transmission part 112, and is diffused. Irradiation is performed on the front side, that is, the side visually recognized by the driver sitting in the driver's seat. Thereby, as for the vehicle display apparatus 1, the diffuse transmission part 112 light-emits, and the decoration protrusion part 110 containing the said diffuse transmission part 112 functions as a decoration light emission site | part.

  By the way, as shown in FIG.2, FIG.3, FIG.4, the decoration protrusion-shaped part 110 of this embodiment is a part with the relatively large protrusion amount from the dial 9 of the protrusion main-body part 111, and the said protrusion amount. It includes a relatively small portion, and according to this, includes a portion where the distance between the diffuse transmission portion 112 and the transmission region 92 in the depth direction Y is different. Here, the decorative protruding portion 110 provided on the speedometer 21 side has a relatively large protrusion amount at a portion on the left side in the width direction X (that is, near the left end of the vehicle display device 1) and on the upper side in the height direction Z. While the distance between the diffuse transmission part 112 and the transmission region 92 is relatively long, the protruding amount of the part on the right side in the width direction X (that is, near the center of the vehicle display device 1) and below the height direction Z is relatively small. It is formed so that the distance between the diffuse transmission part 112 and the transmission region 92 is relatively short. The decorative protrusion 110 provided on the speedometer 21 side is formed so that the amount of protrusion gradually changes between the two parts, and accordingly, the diffuse transmission part 112 and the transmission region 92 The distance is also changed gradually.

  And the vehicle display apparatus 1 of this embodiment differs in the protrusion amount from the dial 9 of the protrusion main-body part 111 according to a position as mentioned above in the structure from which the distance of the diffuse transmission part 112 and the permeation | transmission area | region 92 differs, By using the transmission region 92 as a light control unit, uneven light emission in the diffuse transmission unit 112 is suppressed. That is, as shown in FIGS. 2, 5, and the like, the vehicle display device 1 is a transmission region provided facing the optical path space 117 inside the projecting main body 111 with respect to the light irradiation direction (depth direction Y). The light transmission width of 92 is formed so as to differ according to the distance along the light irradiation direction between the diffuse transmission part 112 and the transmission region 92, thereby suppressing light emission unevenness in the diffuse transmission part 112.

  Here, the light transmission width of the transmission region 92 corresponds to the width of the transmission region 92 along the light irradiation direction, here, the transmission region width direction intersecting the depth direction Y. Typically, the transmission region width direction is a direction orthogonal to the depth direction Y and orthogonal to the extending direction (tangential direction) of the transmission region 92 at the position, and the light transmission width of the transmission region 92 is typically Is a width in a direction perpendicular to the depth direction Y and perpendicular to the extending direction of the transmission region 92 at the position. The light transmission width of the transmission region 92 of the present embodiment depends on the distance along the light irradiation direction between the diffusion transmission portion 112 at a position facing the light irradiation direction (depth direction Y) and the transmission region 92. Different. More specifically, the light transmission width of the transmission region 92 is relative to a position where the distance along the light irradiation direction between the diffuse transmission unit 112 and the transmission region 92 is relatively long (for example, refer to the distance T1 in FIG. 2). Position (for example, see the light transmission width W1 in FIG. 2), and a position where the distance along the light irradiation direction between the diffuse transmission part 112 and the transmission region 92 is relatively short (for example, see the distance T2 in FIG. 2). And relatively narrow (for example, see the light transmission width W2 in FIG. 2). Thereby, the transmission region 92 of the dial 9 can function as a light control unit that adjusts the amount of light according to the distance between the diffuse transmission unit 112 and the transmission region 92.

  According to the vehicle display device 1 described above, the light source unit 100 that emits light, and the transmission region 92 that transmits and diffuses the light from the light source unit 100 in the light shielding region 91 that blocks the light from the light source unit 100. A dial plate 9 including the dial plate 9, a projecting main body portion 111 projecting from the dial plate 9 along the direction of light irradiation by the light source unit 100, and provided in a hollow shape; A decorative projecting portion 110 having a diffusing and transmitting portion 112 that transmits and diffuses the light irradiated inside the projecting main body portion 111 through the region 92, and the transmissive region 92 projects in the light irradiation direction. A diffusive transmission part 112 and a transmission area 92 provided so as to face the inside of the main body 111 and in a position where the light transmission width along the transmission area width direction intersecting the light irradiation direction faces the light irradiation direction. Direction of light irradiation with Different depending on along distance.

  Accordingly, the vehicle display device 1 is decorated by transmitting and diffusing the light emitted from the light source unit 100 through the transmission region 92 into the projecting main body unit 111 through the diffusion transmission unit 112 of the decoration projection unit 110. A light emitting site is constructed. The vehicle display device 1 is configured such that the light transmission width of the transmission region 92 differs depending on the distance between the diffusion transmission unit 112 and the transmission region 92, so that the diffusion transmission unit 112 and the transmission region 92 are different in the transmission region 92. Since the amount of light can be adjusted (dimmed) according to the distance, it is possible to suppress the occurrence of unevenness in the light emission of the decorative light emitting portion and to emit light substantially uniformly. As a result, the vehicle display device 1 can appropriately emit the decorated light emitting portion.

  In this case, the vehicle display device 1 includes, for example, a light guide such as a prism extending in the internal space portion (optical path space portion 117) of the projecting main body portion 111 formed in a hollow shape, and uniform light is transmitted to the diffuse transmission portion 112. As compared with the case of irradiating light, since the uneven light emission of the diffuse transmission part 112 can be suppressed without accommodating a light guide or the like in the internal space part of the projecting main body part 111, the decorative light emitting part It is possible to prevent the design property from being restricted, and for example, it is possible to further reduce the finding dimension of the protruding main body 111. Moreover, since the vehicle display apparatus 1 can suppress the light emission unevenness of the diffuse transmission part 112 without accommodating a light guide or the like in the internal space part of the projecting main body part 111, for example, the number of components can be suppressed. The manufacturing cost can be suppressed, the manufacturing man-hours can be suppressed, and the manufacturing cost can also be suppressed in this respect. In addition, since the vehicle display device 1 has a configuration in which light is diffused in two stages, that is, the transmission region 92 of the dial 9 and the diffuse transmission unit 112 that constitutes the decorative light emitting part, for example, the thickness of the diffuse transmission unit 112 By adjusting the light transmission width of the transmissive region 92 after making the light intensity substantially uniform, the amount of light in the diffusive transmission portion 112 can be adjusted appropriately. Thereby, since the vehicle display apparatus 1 can shape | mold the said diffuse transmission part 112 by making the thickness of the diffuse transmission part 112 uniform, it can suppress that molding defects, such as what is called a sink, generate | occur | produce. it can.

  More specifically, according to the vehicle display device 1 described above, the light transmission width is relatively large at a position where the distance along the light irradiation direction between the diffuse transmission part 112 and the transmission region 92 is relatively long. Widely, the distance along the light irradiation direction between the diffuse transmission part 112 and the transmission region 92 is relatively short at a relatively short position. Therefore, in the vehicle display device 1, the distance between the diffuse transmission part 112 and the transmission region 92 is relatively long, and the attenuation amount of light from the transmission region 92 to the diffuse transmission part 112 tends to be relatively large. Since the light transmission width of the transmission region 92 at a certain position is relatively wide, the amount of light emitted from the transmission region 92 can be relatively increased, and thus diffusion caused by the relatively long distance. A drop in the amount of light in the transmission part 112 can be suppressed. On the other hand, in the vehicle display device 1, the distance between the diffusing and transmitting portion 112 and the transmitting region 92 is relatively short, and the attenuation of light from the transmitting region 92 to the diffusing and transmitting portion 112 tends to be relatively small. Since the light transmission width of the transmission region 92 at a certain position is relatively narrow, the amount of light emitted from the transmission region 92 can be relatively reduced, resulting in a relatively short distance. It is possible to suppress an excessive amount of light in the diffuse transmission unit 112. As a result, the vehicle display device 1 can suppress the occurrence of unevenness in the light emission of the diffusing and transmitting unit 112 that constitutes the decorative light emitting part, and can emit light substantially uniformly.

  Furthermore, according to the vehicle display device 1 described above, the projecting main body 111 is formed in an annular shape with the outer annular portion 114 formed in an annular shape and the outer annular portion 114 inside the outer annular portion 114 with a space therebetween. The diffusing and transmitting portion 112 is formed in an annular shape between the outer annular portion 114 and the inner annular portion 115 and connects the outer annular portion 114 and the inner annular portion 115. To do. Therefore, in the vehicle display device 1, an annular decorative light emitting portion can be configured by the outer annular portion 114, the inner annular portion 115, and the diffuse transmission portion 112, and then the diffuse transmission portion 112 can be used as a decorative light emission. The decorative member at the site, the diffusing member that transmits and diffuses light, and the connecting member that connects the outer annular portion 114 and the inner annular portion 115 can be used in combination with three functions. As a result, the vehicle display device 1 can suppress the number of component parts and suppress the manufacturing cost, and in such a configuration, the decorative light emitting part can appropriately emit light.

  Furthermore, according to the vehicle display device 1 described above, the decorative protrusion 110 includes the decorative ring 113 that is assembled to the protruding main body 111 adjacent to the diffuse transmission part 112. Therefore, for example, the vehicle display device 1 suppresses the manufacturing cost as compared with a case where the decoration ring 113 and the light emitting body (the diffuse transmission part 112 and the like) of the decoration light emitting part are formed by so-called two-color molding. can do.

  The vehicle display device according to the above-described embodiment of the present invention is not limited to the above-described embodiment, and various modifications can be made within the scope described in the claims.

  In the above description, the decorative projecting portion 110 has been described as being provided in a ring shape so as to surround the entire measurement display surface 91a corresponding to the speedometer 21 and the tachometer 22, but is not limited thereto. It may be one or it may not be annular. Moreover, although the decoration protrusion-shaped part 110 demonstrated as what was formed as a part of the facing member 33, it is not restricted to this and may be comprised separately from the facing member 33. FIG. The decorative protrusion 110 may be configured without the decorative ring 113.

  The protruding main body 111 described above has been described as being formed by the outer annular portion 114 and the inner annular portion 115, but is not limited thereto. Although the diffuse transmission part 112 was demonstrated as what functions also as a joint plate which connects the outer side annular part 114 and the inner side annular part 115, it is not restricted to this.

  Further, in the diffuse transmission unit 112 described above, the incident surface width of the light incident surface on the back side in the depth direction Y is irradiated with light from the diffuse transmission unit 112 and the transmission region 92 in the same manner as the light transmission width of the transmission region 92. It may be formed differently depending on the distance along the direction. Here, the incident surface width of the diffuse transmission portion 112 corresponds to the width of the incident surface along the light irradiation direction, here, the incident surface width direction intersecting the depth direction Y. Typically, the incident surface width direction is a direction orthogonal to the depth direction Y and orthogonal to the extending direction (tangential direction) of the incident surface of the diffuse transmission unit 112 at the position, and the incident surface of the diffuse transmission unit 112 The width is typically a width in a direction perpendicular to the depth direction Y and perpendicular to the extending direction of the incident surface of the diffuse transmission part 112 at the position. In this case, the incident surface width of the diffuse transmission part 112 depends on the distance along the light irradiation direction between the diffusion transmission part 112 at a position facing the light irradiation direction (depth direction Y) and the transmission region 92. To be different. More specifically, the width of the incident surface of the diffusing and transmitting portion 112 is relatively wide at a position where the distance along the light irradiation direction between the incident surface of the diffusing and transmitting portion 112 and the transmissive region 92 is relatively long. The distance along the light irradiation direction between the incident surface of the portion 112 and the transmission region 92 may be relatively narrow at a relatively short position. Thereby, the vehicle display device 1 may be able to more appropriately suppress the occurrence of unevenness in the light emission of the decorative light emitting part including the diffuse transmission part 112 and to emit light more uniformly.

1 Vehicle display device 9 Dial (plate-shaped member)
91 light-shielding region 92 transmissive region 100 light source unit 110 decorative projecting portion 111 projecting main body portion 112 diffusion transmissive portion 113 decorative ring (decorative member)
114 Outer annular portion 115 Inner annular portion T1, T2 Distance W1, W2 Light transmission width Y Depth direction (light irradiation direction)

Claims (4)

A light source unit that emits light;
A plate-like member including a transmission region that transmits and diffuses light from the light source unit in a light-blocking region that blocks light from the light source unit;
A projecting main body projecting from the plate-like member along the light irradiation direction of the light source unit and provided in a hollow shape, and provided on the projecting tip side of the projecting main body unit from the light source unit via the transmission region A decorative projecting portion having a diffuse transmission portion that transmits and diffuses the light irradiated inside the projecting main body portion;
The transmission region is provided to face the inside of the projecting main body with respect to the light irradiation direction, and a light transmission width along a transmission region width direction intersecting the light irradiation direction is the light irradiation direction. Is different according to the distance along the irradiation direction of the light between the diffuse transmission part and the transmission region at a position facing to,
Vehicle display device. The light transmission width is relatively wide at a position where the distance along the light irradiation direction between the diffuse transmission portion and the transmission region is relatively long, and the light transmission width of the diffusion transmission portion and the transmission region is relatively large. The distance along the irradiation direction is relatively short at a relatively short position,
The vehicle display device according to claim 1. The projecting main body is formed in a hollow shape by an outer annular portion formed in an annular shape, and an inner annular portion formed in an annular shape at an interval from the outer annular portion inside the outer annular portion,
The diffuse transmission part is formed in an annular shape between the outer annular part and the inner annular part, and connects the outer annular part and the inner annular part.
The vehicle display device according to claim 1 or 2. The decorative projecting portion has a decorative member that is assembled to the projecting main body portion adjacent to the diffuse transmission portion,
The vehicle display device according to any one of claims 1 to 3.

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