WO2020045190A1

WO2020045190A1 - Vehicle display device

Info

Publication number: WO2020045190A1
Application number: PCT/JP2019/032644
Authority: WO
Inventors: 信輔久次; 正実間瀬
Original assignee: 株式会社デンソー
Priority date: 2018-08-30
Filing date: 2019-08-21
Publication date: 2020-03-05
Also published as: JP6930508B2; JP2020034445A

Abstract

A vehicle display device (100) is employed in a vehicle, and is provided with a pointer (40). The pointer (40) comprises: a display main body (41) which serves as a viewing target and which effects a display; a light emitting element (60) which emits light to illuminate the display main body (41); and a power receiving circuit unit (70) which is configured to be capable of receiving power by non-contact power supply, and which causes the light emitting element (60) to emit light by means of the received electric power. At least one of the light emitting element (60) and the power receiving circuit unit (70) is disposed adjacent to the display main body (41). The pointer (40) is provided with a heat dispersing structure (80) for dispersing heat generated by said at least one of the light emitting element (60) and the power receiving circuit unit (70).

Description

Display device for vehicles

Cross-reference of related applications

This application is based on Japanese Patent Application No. 2018-161891 filed on August 30, 2018, the disclosure of which is incorporated herein by reference.

The disclosure according to this specification relates to a display device for a vehicle.

表示 Conventionally, display components used for display devices for vehicles have been known. For example, a display component disclosed in Patent Document 1 is configured to be visible and perform display, a light emitting element that illuminates the display body by emitting light, and is configured to be capable of receiving power by non-contact power supply, and causes the light emitting element to emit light by the received power. And a power receiving circuit unit.

JP 2004-163261 A

However, in the display component of Patent Document 1, the display main body is adjacent to the light emitting element or the power receiving circuit portion, and the heat generated from the light emitting element or the power receiving circuit portion is a portion of the display main body adjacent to the light emitting element or the power receiving circuit portion. Is locally heated to a high temperature, and due to the influence of such heat, the display body may be deformed or loosened with other parts. When the display body is deformed, the position of the display body may be shifted from the original position. In addition, when the looseness between other parts occurs, the display main body may swing. Due to the influence of these heats, there is a concern that the display by the display main body becomes difficult to read or view, that is, the display quality deteriorates.

One object disclosed is to provide a vehicle display device capable of maintaining a high display quality.

One aspect disclosed herein is a vehicle display device that is used for a vehicle and includes a display component,
The display parts are
A display body that is a viewing target and performs display,
A light-emitting element that emits light to illuminate the display body,
Having a power receiving circuit portion configured to be capable of receiving power by non-contact power supply and causing the light emitting element to emit light by the received power,
At least one of the light emitting element and the power receiving circuit portion is disposed adjacent to the display body,
In the display component, a heat dispersing structure for dispersing the heat generated at least one of the above is provided.

According to such an embodiment, the display component has a heat dispersion structure. The heat dispersion structure disperses heat generated in at least one of the light emitting element and the power receiving circuit unit. Therefore, a portion of the display main body adjacent to the light emitting element and the power receiving circuit portion is prevented from being locally heated. Thus, as a result of suppressing the generation of the high heat portion, it is possible to suppress the deformation of the display main body and the generation of the looseness between the display main body and other parts. Therefore, it is possible to maintain the display quality of the display main body, which becomes an object to be viewed and performs display, in a high state.

Another aspect disclosed herein is a display device for a vehicle that is used for a vehicle and includes a display component.
The display parts are
A display body that is a viewing target and performs display,
A power receiving circuit configured to receive power by non-contact power supply,
A visible light emitting element that emits visible light by the power received by the power receiving circuit unit to illuminate the display body,
And an invisible light emitting element that emits invisible light by the power received by the power receiving circuit unit.

According to such an embodiment, in the display component, a plurality of systems of light-emitting elements, that is, a visible light-emitting element and an invisible light-emitting element are provided. Here, since the visible light emitting element emits visible light to illuminate the movable main body, the visibility of the display main body is improved when performing display according to the position where the display main body has moved. Therefore, the display quality of the display component is improved. At the same time, since the invisible light emitting element emits invisible light, additional functions can be added to the display component using the invisible light.

It is an exploded view showing the display for vehicles of a 1st embodiment. It is sectional drawing which shows the pointer | guide of 1st Embodiment. It is the rear view which looked at the pointer of a 1st embodiment from the back side to the perception side. It is the rear view which looked at the pointer of 2nd Embodiment from the back side toward the visual recognition side. It is a perspective view for explaining the 1st cover uneven structure provided in the cover of a 2nd embodiment. It is a perspective view for explaining the 3rd cover uneven structure provided in the cover of a 2nd embodiment. It is a top view showing the substrate of a 3rd embodiment. It is a perspective view for explaining arrangement in a cover of a board of a 3rd embodiment. It is sectional drawing which shows the pointer | guide of 3rd Embodiment. It is a top view showing the substrate of a 4th embodiment. It is a perspective view for explaining arrangement in a pointer of a substrate of a 4th embodiment. It is a perspective view showing an indicator of a 5th embodiment. It is sectional drawing which shows the pointer | guide of 5th Embodiment. It is sectional drawing which shows the pointer | guide of 6th Embodiment. FIG. 18 is a front view of the hands according to the seventh embodiment viewed from a viewing side to a back side in a state where a top surface portion is removed. FIG. 16 is a sectional view taken along line XVI-XVI of FIG. 15 (the top surface is not removed). FIG. 17 is a sectional view taken along line XVII-XVII of FIG. 15 (the top surface is not removed). It is a perspective view showing a cover in a modification of a 7th embodiment. It is sectional drawing of the cover of FIG. It is the front view which looked at from the viewing side to the back side in the state where the top part of the pointer of an 8th embodiment was removed. FIG. 17 is a cross-sectional view taken along the line XXI-XXI of FIG. 15 (the top surface is not removed). FIG. 17 is a cross-sectional view taken along line XXII-XXII of FIG. 15 (a top surface portion is not removed). It is a front view for explaining illumination of a decoration ring by a guide of an 8th embodiment. 15 is a perspective view illustrating a cover according to a modification example 4. FIG.

Hereinafter, a plurality of embodiments will be described with reference to the drawings. In addition, in each embodiment, the corresponding components are denoted by the same reference numerals, and redundant description may be omitted. When only a part of the configuration is described in each embodiment, the configuration of another embodiment described earlier can be applied to the other part of the configuration. In addition, not only the combination of the configurations explicitly described in the description of each embodiment, but also the configuration of a plurality of embodiments can be partially combined with each other even if not explicitly described, unless there is a problem in the combination. .

(1st Embodiment)
As shown in FIG. 1, the vehicle display device 100 according to the first embodiment of the present disclosure is installed on an instrument panel facing a seat on which an occupant as a device viewer who views the device 100 is seated. I have. The vehicle display device 100 is capable of displaying vehicle information toward the viewing side where the occupant is located.

In the present embodiment, directions indicated by up, down, front, rear, left, and right are described with reference to a vehicle on a horizontal plane. In this embodiment, the side opposite to the viewing side is referred to as the anti-viewing side.

表示 Such a vehicle display device 100 mainly includes a display panel 10, a power supply circuit section 20, a movement 30, and a pointer 40. Although not shown, the display panel 10, the power supply circuit section 20, the movement 30, and the hands 40 are housed in a hollow box-shaped case section in which a translucent front plate is arranged on the viewing side.

The display plate 10 is also generally called a dial. The display panel 10 is partially or entirely subjected to semi-transparent or light-shielding printing on the surface of a light-transmitting substrate made of a synthetic resin such as a polycarbonate resin or an acrylic resin, and has a flat plate shape. Is formed. Note that, instead of printing, painting may be performed, and the display panel 10 may be formed using a light-shielding base material.

表示 The display panel 10 of the present embodiment is formed so as to have a light-shielding property by printing a large part of the surface in dark (for example, black). Since the outer periphery of the display panel 10 is surrounded by the case portion, the structure and components disposed on the opposite side of the display panel 10 from the visual recognition side are covered and hidden.

{Circle around (1)} Indices 11 are formed on the left and right regions of the display panel 10 by semi-translucent printing, respectively, corresponding to the positions of the hands 40. The index 11 is composed of scales, characters, and the like. The scales are arranged in a partial annular shape so as to surround the hands 40. The character is, for example, a number indicating a physical quantity corresponding to the scale. The indicator 11 is illuminated by an indicator lighting light-emitting element (for example, a light-emitting diode) disposed on the opposite side of the display panel 10 from the viewing side, and is turned on.

(4) The power supply circuit section 20 is arranged on the opposite side of the display board 10 from the visual recognition side, and is configured to be able to perform non-contact power supply to the hands 40 disposed apart from the power supply circuit section 20. The power supply circuit unit 20 according to the present embodiment includes a primary coil 21 in order to perform non-contact power supply using, for example, a magnetic field resonance (magnetic resonance) method. A resonator (for example, a resonance capacitor) provided between the primary coil 21 on the circuit and the power supply controls the primary coil 21 based on the resonance frequency. The primary coil 21 of the present embodiment is provided in common for the plurality of hands 40, and is a large coil formed in a size that can cover each hand 40.

The movement 30 is a drive mechanism for rotating the pointer 40 as a display component. Two movements 30 are provided corresponding to the arrangement of the hands 40. The movement 30 is, for example, a stepping motor, and has a motor section 31 and a shaft section 32. The motor unit 31 is controlled based on an electric signal from the vehicle, and drives the shaft unit 32 to rotate. The shaft portion 32 is formed in a rod shape, for example, of metal, is connected to the motor portion 31, and transmits the rotation output by the motor portion 31 to the hands 40.

The pointer 40 is a display component that displays vehicle information by indicating the index 11 on the display panel 10. A plurality of hands (two in this embodiment) are provided corresponding to the left and right regions of the display panel 10, respectively. Each pointer 40 can display information corresponding to the pointed position by pointing to the corresponding index 11. In particular, in the present embodiment, the speed of the vehicle is displayed by the left pointer 40 pointing to the left index 11, and the vehicle is displayed by the right pointer 40 pointing to the right index 11. Engine speed is displayed.

ため Since the two hands 40 have substantially the same configuration, the left hand 40 will be described below as a representative.

As shown in FIGS. 2 and 3, the pointer 40 has a display body 41, a cover 50, a light emitting element 60, and a power receiving circuit unit 70 which are integrally formed by assembling them with each other.

The display main body 41 is an integrally molded product in which a pointing part 42, an introduction part 43, and a connecting shaft part 44 are integrally molded by a light-transmissive base material made of a synthetic resin such as a polycarbonate resin or an acrylic resin. . The display main body 41 is at least partially exposed (in the present embodiment, the indicating section 42) to the cover 50, so that the display main body 41 is visually recognized by an occupant, and performs display.

The indicator 42 has a needle-like shape that protrudes from the introduction portion 43 along the display plate 10 in the direction in which the display plate 10 extends, and becomes narrower in width from the base end portion 42a to the distal end portion 42b. As described above, the indicator 42 is exposed to the cover 50 and thus becomes a visual target. The tip portion 42b of the instructing section 42 instructs the index 11, and the vehicle information is displayed as described above.

(4) The introduction portion 43 is connected to the base end portion 42a of the pointing portion 42 without a clear boundary. The introduction portion 43 is a non-visual target by being covered with the cover 50. The introduction portion 43 defines a housing space 40a for housing the light emitting element 60 and the power receiving circuit unit 70 by forming a recess.

(4) The introduction unit 43 introduces the light emitted by the light emitting element 60 accommodated in the accommodation space 40a into the inside of the display main body 41 and guides the light to the instruction unit 42. Specifically, the introduction portion 43 has an introduction surface 43a arranged to face the light emitting element 60, and a reflection surface 43b arranged on the opposite side to the light emitting element 60 across the introduction surface 43a. I have. In particular, in the present embodiment, the housing space 40a, the introduction surface 43a, and the reflection surface in the area A1 of the inside of the cover 50 on the opposite side of the connection shaft portion 44 from the indication portion 42 (hereinafter, the opposite indication portion side). 43b are arranged side by side along the axial direction AD substantially perpendicular to the display panel 10. The accommodation space 40a is located closest to the viewing side, the introduction surface 43a is located between the accommodation space 40a and the reflection surface 43b, and the reflection surface 43b is located closest to the viewing side.

The light emitted by the light emitting element 60 passes through the introduction surface 43a and is introduced into the inside of the display main body 41, and then is reflected by the reflection surface 43b inclined with respect to the introduction surface 43a, so as to travel to the indicating section 42. Turned to Then, by being radiated to the outside from each part of the instruction unit 42, the occupant visually recognizes the instruction unit 42 as emitting light. Since the indicator 42 emits light, reading of the display becomes easy.

The connecting shaft portion 44 has a cylindrical shape protruding from the introduction portion 43 to the side opposite to the visual recognition along the axial direction AD. The connection shaft portion 44 is also a non-visual target by being hidden by the cover 50. The connection shaft portion 44 connects the movement portion 30 to the introduction portion 43 and the pointing portion 42 by a fitted state in which the shaft portion 32 is lightly press-fitted into the connection hole 44a formed in the center of the connection shaft portion 44. . In this way, the pointer 40 is connected to the movement 30 and rotates around a rotation center along the axial direction AD.

Usually, the center of gravity of the pointer 40 tends to be biased toward the region A2 closer to the indicator than the connecting shaft 44 due to the arrangement of the indicator 42. In the present embodiment, as described later, the center of gravity is moved from the indicator to the indicator. It is set at a position close to the center of rotation.

The cover 50 is formed in a cylindrical shape having an opening 53 by closing the viewing side with a top surface portion 51 and opening the opposite viewing side with a light-shielding base material made of, for example, a synthetic resin. The cover 50 covers the introduction unit 43 from the outside in a posture in which the top surface unit 51 is disposed closer to the viewing side than the introduction unit 43. The light emitting element 60 and the power receiving circuit unit 70 are covered and hidden by the cover 50 and are not visible. The cover 50 has a window portion 50 a in the side surface portion 52 through which the base end portion 42 a of the indicating portion 42 is inserted in order to arrange the indicating portion 42 integrated with the introduction portion 43 outside the cover 50.

In the surface of the cover 50, a metal layer by plating is formed on a viewing side portion 51 a facing the viewing side on the top surface portion 51 and an outside portion 52 a facing the outside on the side surface portion 52. Function as an electromagnetic shield for the light emitting element 60 and the power receiving circuit unit 70 arranged in the power supply circuit 70. The metal layer protects the light emitting element 60 and the power receiving circuit unit 70 from static electricity when the pointer 40 is assembled, for example.

The light emitting element 60 is adjacent to the introduction section 43 of the display main body 41 by being arranged in the accommodation space 40a so as to face the introduction surface 43a. In the present embodiment, a point light source-like light emitting diode is employed. The light emitting element 60 is electrically connected to the power receiving circuit unit 70, and is a visible light emitting element that emits visible light at an intensity corresponding to the amount of current flowing through the light emitting element 60. The visible light may be, for example, monochromatic light such as red or white light in which light of a plurality of wavelengths is mixed.

(4) The power receiving circuit section 70 is arranged on the opposite side of the light-emitting element 60 from the introduction surface 43a in the accommodation space 40a, and thus is adjacent to the introduction section 43 and the connection shaft section 44 of the display main body 41. The power receiving circuit unit 70 can receive power from the power supply circuit unit 20 by non-contact power feeding, and can emit light from the light emitting element 60 by the received power. In particular, the power receiving circuit unit 70 of the present embodiment in which the magnetic field resonance method is employed is mainly configured by the coil unit 71 having a specific gravity larger than that of the display main body 41. The coil unit 71 has a cylindrical or columnar bobbin 71a and a secondary coil 71b wound around the bobbin 71a. By controlling the secondary coil 71b at a frequency such that a resonator (for example, a resonance capacitor) provided between the secondary coil 71b and the light emitting element 60 on the circuit matches the resonance frequency of the power supply circuit unit 20, Electric power is supplied to the light emitting element 60. Note that the resonance frequency set in the present embodiment is set to be different from the frequency at which other elements operate, for example, so as not to malfunction other elements such as the movement 30 and the external device.

Thus, power is transmitted from the power supply circuit section 20 to the power receiving circuit section 70, and the light emitting element 60 emits light. This is accompanied by heat generation of the power receiving circuit section 70 and the light emitting element 60. If the portion of the display main body 41 adjacent to the power receiving circuit section 70 and the light emitting element 60 becomes high heat due to the generated heat, the display main body 41 may be deformed or the coupling between the display main body 41 and the shaft section 32 may be loosened. There is. Here, the adjacent part is defined as a part at a distance of 1 cm or less from the light emitting element 60 or the power receiving circuit unit 70, but may be defined as a part at a distance of 5 mm or less.

If the display body 41 is deformed, for example, if the pointing unit 42 is bent, the pointing position of the pointing unit 42 deviates from the original position, and the accuracy of the displayed vehicle information is reduced. Is concerned. Further, if the display main body 41 is deformed, the weight balance of the hands 40 is deteriorated, and there is a concern that the hands 40 may rotate in an unstable manner.

基材 Further, since the thermal expansion coefficient of the base material forming the connecting shaft portion 44 is larger than the thermal expansion coefficient of the shaft portion 32, the above-described loosening of the connection may occur due to the influence of heat. Then, there is a concern that the pointer 40 swings and it becomes difficult to specify the designated position by the pointing unit 42. In the worst case, there is a concern that the pointer 40 will idle and the pointer 40 will not rotate.

Therefore, the pointer 40 is provided with a heat dispersing structure 80 for dispersing the heat generated in the light emitting element 60 and the power receiving circuit unit 70. Specifically, the heat distribution structure 80 of the present embodiment includes a main body concave / convex structure 81 in which main body concave portions 82 and main body convex portions 83 are alternately arranged on the surface of the display main body 41. The plurality of main body concave portions 82 and the plurality of main body convex portions 83 are provided, and are formed integrally with the display main body 41 as a part of the display main body 41 by the base material of the display main body 41. The main body concave portion 82 is formed so as to be recessed with respect to the adjacent main body convex portion 83, and the main body convex portion 83 is formed so as to protrude from the adjacent main body concave portion 82. By arranging the main body uneven structure 81 at a portion adjacent to the power receiving circuit portion 70 and the light emitting element 60 or around the portion, the surface area of the display main body 41 is increased, and heat is efficiently transferred to the outside of the display main body 41. Heat can be dissipated.

For example, nine main body projections 83 are provided on the back side of the display main body 41, and connect the introduction portion 43 and the connection shaft 44 in a beam shape, and form a flat plate extending radially from the connection shaft 44. Is formed. Since the main body projection 83 is formed in a beam shape, the second moment of area of the display main body 41 is improved, and the angles of the introduction part 43 and the pointing part 42 with respect to the connection shaft part 44 due to deformation are suppressed. Further, since the main body convex portion 83 presses the connection shaft portion 44 from the outer peripheral side, the thermal expansion of the connection hole 44a is suppressed.

Each of the main body projections 83 has, for example, a substantially same thickness between the portions of the one main body projection 83 and each of the main body projections 83, and the rear side of the opening 53 so as to straddle the opening 53 of the cover 50. It overhangs to the side. The main body projections 83 are arranged apart from each other. Thereby, each main body concave portion 82 is formed between the main body convex portions 83.

The density at which the main body projections 83 are arranged is set higher in a region A1 on the side of the indication portion of the display main body 41 that is on the side opposite to the connection shaft portion 44 than the connection shaft portion 44 with reference to the connection shaft portion 44. Have been. For example, in the present embodiment, the main body protruding portions 83 are arranged at an angular interval of 45 ° in the region A2 on the pointing portion side, whereas the main body protruding portions 83 are arranged at 30 ° in the region A1 on the opposite pointing portion side. Are arranged at an angular interval of. In this way, the surface area is increased at a portion closer to the light emitting element 60 and the power receiving circuit portion 70 in the display main body 41, the heat radiation efficiency is increased, and the center of gravity of the pointer 40 is closer to the rotation center from the pointing portion side. Can be set to position.

(Effects)
The operation and effect of the first embodiment described above will be described again below.

According to the first embodiment, the pointer 40 as a display component has the heat dispersion structure 80. The heat dispersing structure 80 disperses heat generated in at least one of the light emitting element 60 and the power receiving circuit unit 70. Therefore, a portion of the display main body 41 adjacent to the light emitting element 60 and the power receiving circuit unit 70 is prevented from being locally heated. As a result of suppressing the generation of the high heat portion, it is possible to suppress the deformation of the display main body 41 and the generation of the looseness between the display main body 41 and another component (for example, the shaft portion 32). Therefore, it is possible to maintain the display quality of the display main body 41, which becomes a viewing target and performs display, in a high state.

According to the first embodiment, as the heat dispersion structure 80, the main body concave / convex structure 81 in which the main body concave portions 82 and the main body convex portions 83 are alternately arranged on the surface of the display main body 41 is provided. By doing so, the surface area of the display main body 41 can be increased, so that the heat of the display main body 41 can be efficiently released to the outside. Therefore, since the display main body 41 is prevented from being heated to a high temperature, deformation of the display main body 41 or loosening between the display main body 41 and other components can be suppressed.

According to the first embodiment, the plurality of main body protrusions 83 provided in the main body uneven structure 81 connect the introduction portion 43 and the connection shaft portion 44 in a beam shape and extend radially from the connection shaft portion 44. It is formed in a wall shape. As described above, since the main body convex portion 83 formed in a wall shape is provided so as to be connected to the introduction portion 43, the surface area around the introduction portion 43 to which heat from the light emitting element 60 is easily transmitted is increased, and The heat of 41 can be efficiently released to the outside.

(4) At the same time, since the main body concave portion 82 connects the introduction portion 43 and the connecting shaft portion 44 in a beam shape, the display main body 41 is reinforced and is hardly deformed. More specifically, since the plurality of main body concave portions 82 are formed to extend radially from the connecting shaft portion 44, the connecting shaft portion 44 has a structure that is not easily deformed by thermal expansion, and the display main body 41 and the shaft of the movement 30 are formed. It is possible to suppress the occurrence of looseness with the portion 32.

According to the above, the main body uneven structure 81 improves the display main body 41 not only from the viewpoint of heat dissipation due to the increase in the surface area but also from the viewpoint of rigidity, so that the effect of suppressing the deformation of the display main body 41 or the occurrence of looseness with other components is suppressed. Can be further enhanced.

According to the first embodiment, the position of the center of gravity of the light emitting element 60 and the power receiving circuit unit 70 is located on the opposite side of the connecting unit 44 from the indicating unit 42. According to such an arrangement, by keeping the light emitting element 60 and the power receiving circuit unit 70 away from the instruction unit 42, it is possible to prevent the instruction unit 42 from being locally heated to a high temperature. Is changed and the accuracy of the display is suppressed from being reduced. At the same time, the balance of the center of gravity of the pointer 40, which tends to be biased toward the indicator, is improved, so that the pointer 40 can be driven stably.

According to the first embodiment, the density of the main body convex portion 83 is set to be higher on the side of the pointing portion opposite to the pointing portion with reference to the connecting shaft portion 44. By increasing the heat radiation performance at a position close to the light emitting element 60 and the power receiving circuit unit 70 as a heat source, a portion of the display main body 41 adjacent to the light emitting element 60 and the power receiving circuit unit 70 may be locally heated. Is suppressed. At the same time, the high-density main body convex portion 83 increases the weight on the opposite side of the pointing portion 42 with the connecting shaft portion 44 interposed therebetween, so that the weight balance of the entire pointer 40 is improved and the pointer 40 can be stably held. Can be driven. As described above, the display quality can be maintained at a high level.

According to the first embodiment, the pointer 40 further includes the cover 50 that covers the light emitting element 60 and the power receiving circuit unit 70. With such a cover 50, the appearance of the pointer 40 can be improved.

(2nd Embodiment)
As shown in FIGS. 4 to 6, the second embodiment is a modification of the first embodiment. The second embodiment will be described focusing on the differences from the first embodiment.

The heat dispersing structure 280 of the pointer 240 of the second embodiment is provided not on the display main body 41 but on the cover 50. Specifically, the heat dispersion structure 280 includes cover concave and

convex structures

281a, 281b, 281c in which cover

concave portions

282a, 282b, 282c and cover

convex portions

283a, 283b, 283c are alternately arranged on the surface of the cover 50. Particularly, in the present embodiment, the first cover uneven structure 281a is provided on the outer portion 52a facing outward on the side surface portion 52 of the surface of the cover 50, and the second cover uneven structure 281b is formed on the opening 53 of the surface of the cover 50. The third cover concave-convex structure 281c is provided at a viewing side portion 51a facing the viewing side on the top surface portion 51 of the surface of the cover 50.

において In the first cover uneven structure 281a, a plurality of cover concave portions 282a and cover convex portions 283a are provided, and are formed integrally with the cover 50 as a part of the cover 50. Each of the cover recesses 282a is provided, for example, in a number of seven, and is formed in a groove shape extending along the axial direction AD. Each of the cover recesses 282a is arranged in the circumferential direction of the cover 50 at locations except for the window portion 50a in the circumferential direction of the cover 50, at substantially equal intervals. Each cover convex portion 283a is formed between the cover concave portions 282a so as to protrude from the cover concave portion 282a. In addition, as shown in FIG. 5, the number of the cover recesses 282a may be changed.

において In the second cover uneven structure 281b, a plurality of cover concave portions 282b and cover convex portions 283b are provided, and are formed integrally with the cover 50 as a part of the cover 50. For example, five cover protrusions 283b are provided, and each protrusion 283b is formed in a projecting shape protruding toward the inner peripheral side of the cover 50 from the opening 53 of the cover 50 toward the connection shaft 44 of the display main body 41. The respective cover projections 283b are arranged in the circumferential direction of the cover 50 at substantially the same distance from each other except for the window 50a in the circumferential direction of the cover 50. The projecting dimension of each cover projection 283b is appropriately set so as not to interfere with other structures. Each cover recess 282b is formed between the cover protrusions 283b so as to be recessed with respect to the cover protrusion 283b.

において In the third cover uneven structure 281c, a plurality of cover concave portions 282c and a plurality of cover convex portions 283c are provided. As shown in detail in FIG. 6, the third cover uneven structure 281c has a hairline structure formed by printing or the like on the base material of the cover 50. The hairline structure is a structure in which a metallic texture is expressed by forming a plurality of fine wires as the cover convex portion 283c concentrically with respect to the connection shaft portion 44. Each cover concave portion 282c is formed between each cover convex portion 283c so as to be depressed with respect to the cover convex portion 283c.

According to the second embodiment described above, as the heat distribution structure 280, the first cover concave-convex structure 281a, the cover concave portion 282b, and the cover convex portion 283b in which the cover concave portions 282a and the cover convex portions 283a are alternately arranged on the surface of the cover 50. Are alternately arranged, and a third cover uneven structure 281c in which cover concave portions 282c and cover convex portions 283c are alternately arranged. When such cover

uneven structures

281a, 281b, 281c are provided, the surface area of the cover 50 that covers the light emitting element 60 and the power receiving circuit unit 70 can be increased, so that heat generated from the light emitting element 60 and the power receiving circuit unit 70 can be reduced. , Can be efficiently released to the outside. Therefore, thermal damage to the display main body 41 can be reduced.

According to the second embodiment, the cover concavo-convex structure 281c includes a hairline structure formed on the viewing side portion 51a of the surface of the cover 50. By providing the hairline structure in the viewing side part 51a, the cover 50 is decorated and the appearance is improved in addition to the improvement of the heat radiation performance due to the increase in the surface area of the cover 50.

(Third embodiment)
As shown in FIGS. 7 to 9, the third embodiment is a modification of the first embodiment. The third embodiment will be described focusing on the differences from the first embodiment.

The heat distribution structure 380 of the pointer 340 of the third embodiment is provided not in the display body 41 but in the power receiving circuit section 370. In the power receiving circuit section 370 of the present embodiment, each coil section 271 including the secondary coil 371b is formed on a flat board 372. The board 372 of this embodiment is a hard rigid board formed of, for example, an epoxy resin. The substrate 372 of the present embodiment is disposed between the introduction portion 43 of the display main body 41 and the top surface portion 51 of the cover 50, and has a circular outer contour in accordance with the shape of the cylindrical cover.

The heat dispersion structure 380 includes a print pattern structure 381 in which the secondary coil 371b is formed in a print pattern spirally spreading on the substrate 372. In the print pattern structure 381, the contact area of the secondary coil 371b with air can be increased.

In the third embodiment, the light emitting element 360 is also arranged on the substrate 372. On the substrate 372, the light emitting element 360 is mounted in a region A1 on the side opposite to the pointing portion with respect to the connecting shaft portion 44. On the other hand, the center of the spirally extending secondary coil 371b is located in the area A2 closer to the indicator than the connecting shaft 44, and a weight balance hole 372a is formed in the center to penetrate the substrate 372. ing. Due to the arrangement of the light emitting element 360 and the weight balance hole 372a, the center of gravity position where the power receiving circuit section 370 and the light emitting element 360 are combined is located in the area A1 on the side opposite to the pointing section with respect to the connection shaft section 44. Therefore, the position of the center of gravity of the display main body 41 located in the area A2 on the instruction unit side with respect to the connecting shaft portion 44 and the position of the center of gravity of the power receiving circuit unit 370 and the light emitting element 360 are balanced, and the position of the center of gravity of the entire pointer 40 is further improved. It can be close to the center of rotation.

Then, as shown in FIG. 9, in the present embodiment, the introduction surface 43a is arranged on the opposite side of the light-emitting element 360 from the light-emitting element 360, and the reflection surface 43b is arranged on the opposite side of the introduction surface 43a from the light-emitting element 360. I have. The light emitting element 360 emits light from the viewing side to the introduction surface 43a on the opposite viewing side.

According to the third embodiment described above, as the heat distribution structure 380, the print pattern structure 381 in which the coil 371b of the power receiving circuit unit 370 is formed in a print pattern extending on the substrate 372 is provided. By doing so, heat is generated from each of the dispersed portions in the coil 371b, so that it is possible to suppress the display main body 41 from being locally heated.

(Fourth embodiment)
As shown in FIGS. 10 and 11, the fourth embodiment is a modification of the first embodiment. The fourth embodiment will be described focusing on the differences from the first embodiment.

熱 The heat dissipating structure 480 of the indicator 440 of the fourth embodiment is provided in the power receiving circuit unit 470 as in the third embodiment.

電 In the power receiving circuit section 470 of the present embodiment, the coil section 471 including the secondary coil 471a is formed on the substrate 472. The substrate 472 of the present embodiment is a flexible substrate having flexibility. The board 472 integrally includes a coil mounting portion 472a having a rectangular outer peripheral contour and a light emitting element mounting portion 472b provided to protrude in a band shape from the coil mounting portion 472a.

(4) The coil mounting portion 472a is provided with a printed pattern structure 481 in which the secondary coil 471a spirally spreads, as the heat dispersing structure 480, as in the third embodiment. The light emitting element 460 is mounted on the light emitting element mounting section 472b, and the terminal of the secondary coil 471b drawn from the coil mounting section 472a is electrically connected to the light emitting element 460.

において In such a substrate 472, the coil mounting portion 472a is disposed so as to surround the introduction portion 43 of the display main body 41 in the circumferential direction of the cover 50. That is, the coil mounting portion 472 a is curved along the surface of the introduction portion 43 and is disposed in a gap between the introduction portion 43 and the side surface portion 52 of the cover 50. The light emitting element mounting part 472b is disposed in the opening 53 of the cover 50, and the light emitting element 460 emits light toward the introduction surface 43a on the viewing side of the light emitting element 460.

According to the fourth embodiment described above, the substrate 472 is a flexible substrate that is curved along the surface of the display main body 41. With this configuration, heat can be distributed and applied to a wide area of the surface of the display main body 41. Therefore, even if the display main body 41 is adjacent to the power receiving circuit unit 70 on the substrate 472, the display main body 41 is locally localized. High heat can be suppressed.

(Fifth embodiment)
As shown in FIGS. 12 and 13, the fifth embodiment is a modification of the first embodiment. The fifth embodiment will be described focusing on the differences from the first embodiment.

熱 The heat distribution structure 580 of the pointer 540 of the fifth embodiment is provided on the power receiving circuit unit 570 and the cover 550. Specifically, the heat dispersing structure 580 is a cover uneven structure 581 provided on the viewing side portion 551a facing the viewing side on the top surface 551 of the surface of the cover 550.

The cover uneven structure 581 is a hairline structure in which unevenness is provided by a thin wire as in the second embodiment. In the hairline structure, a thin wire that conducts electricity is arranged in a spiral shape, so that the power receiving circuit unit 570 is formed in a spiral shape. The next coil 571a is formed.

{Circle around (5)} The top surface 551 is provided with a through hole 551b in which the light emitting element 560 is embedded, and the secondary coil 571a and the light emitting element 560 are electrically connected. The positional relationship among the light emitting element 560, the introduction surface 43a, and the reflection surface 43b is the same as in the third embodiment.

According to the fifth embodiment described above, the power receiving circuit section 570 has the coil 571a formed in a hairline structure in which metal wires are arranged in a spiral shape on the viewing side portion 551a of the surface of the cover 550. By doing so, even if the coil 571a is exposed to the outside of the cover 550, the appearance of the cover 550 is not only reduced but also decorated with a hairline pattern, so that the appearance is improved. Since the coil 571a, which is a heat source, is exposed outside the cover 50, the influence of heat on the display main body 41 can be reduced. Furthermore, since the coil 571a forms the cover uneven structure 581 and increases the surface area of the cover 50, heat dissipation is improved.

(Sixth embodiment)
As shown in FIG. 14, the sixth embodiment is a modification of the first embodiment. The sixth embodiment will be described with a focus on differences from the first embodiment.

The heat distribution structure 680 of the pointer 640 of the sixth embodiment is a buried structure 681 in which the light emitting element 60 and the power receiving circuit unit 70 are buried by the translucent substrate 682. The translucent base material 682 in the embedded structure 681 is integrally formed with the display main body 41 by being bonded or bonded to the introduction portion 43 and the connection shaft portion 44 of the display main body 41.

As the light-transmitting base material 682, an optically clear resin (hereinafter, referred to as OCR) such as a silicon resin can be employed.

As a method of manufacturing the pointer 640 using the OCR, the light emitting element 60 and the power receiving circuit unit 70 are held in a fixed position (so that the light emitting element 60 faces the introduction surface 43a), and the light emitting element 60 and the power receiving circuit unit 70 A liquid OCR is poured around and cured. With such a method, the light emitting element 60 and the power receiving circuit unit 70 are sealed inside the light transmitting base material 682, and the light transmitting base material 682 can be easily integrated with the display main body 41. By adjusting the area or amount of OCR to be poured, the weight balance of the pointer 640 can be optimized.

In FIG. 14, solid arrows indicate how light emitted from the light-emitting element 60 travels, and broken-line arrows indicate heat generated in the light-emitting element 60 and the power receiving circuit unit 70 at various points in the display main body 41. FIG.

According to the sixth embodiment described above, the buried structure 681 in which the light emitting element 60 and the power receiving circuit unit 70 are buried by the translucent base material 682 is provided as the heat dispersion structure 680. In this case, since the heat generated in the light emitting element 60 and the power receiving circuit unit 70 is immediately transmitted to the entire light transmitting base material 682, the portion of the display body 41 adjacent to the light emitting element 60 and the power receiving circuit unit 70 Alone can suppress a local increase in heat.

According to the sixth embodiment, the translucent substrate 682 is formed integrally with the display main body 41. In this way, the heat generated in the light emitting element 60 and the power receiving circuit unit 70 is immediately transmitted to the entire light transmitting base material 682, and the heat of the light transmitting base material 682 is further transferred from the light transmitting base material 682 to the display body. 41 are distributed to each part. Therefore, it is possible to suppress local high heat only in the portion of the display main body 41 adjacent to the light emitting element 60 and the power receiving circuit unit 70.

(Seventh embodiment)
As shown in FIGS. 15 to 17, the seventh embodiment is a modification of the first embodiment. The seventh embodiment will be described focusing on the differences from the first embodiment.

では In the seventh embodiment, the pointer 740 has a plurality of

light emitting elements

760 and 761. The plurality of

light emitting elements

760 and 761 include the visible light emitting element 760 that emits visible light and the invisible light emitting element 761 that emits invisible light as in the first to sixth embodiments. In this embodiment, one visible light emitting element 760 and one invisible light emitting element 761 are provided.

可視 Visible light emitted from one visible light emitting element 761 is introduced into the inside of the display main body 741 from the introduction surface 743a of the introduction unit 743, and is reflected toward the pointing unit 742 by the reflection surface 743b.

On the other hand, in the introduction portion 743 of the display main body 741, a cylindrical hole-shaped accommodation hole 743 c penetrating from the viewing side to the back side is provided at a position shifted from the reflection surface 743 b in the direction in which the display plate 10 extends. I have. The invisible light emitting element 761 is housed in the housing hole 743c, and more specifically, is locked in the housing hole 743c by being locked by a locking claw or the like.

不 The invisible light emitting element 761 of the present embodiment emits near-infrared light illuminating an occupant as a device viewer to the viewer side. The illumination of the occupant by the near-infrared light is used for a driver status monitor (Driver Status Monitor, DSM). The driver status monitor monitors the occupant's falling asleep, looking aside, and the like, by photographing the occupant's face and the like and analyzing the photographed image.

In order to transmit the infrared light from the invisible light emitting element 761 to the viewing side, the top surface 751 of the cover 750 of the seventh embodiment is configured to transmit near-infrared light. Specifically, the top surface portion 751 may be formed of a synthetic resin that blocks visible light and transmits near-infrared light, and may be formed of a synthetic resin that transmits visible light and near-infrared light. The surface may be formed by applying a paint that blocks visible light and transmits near-infrared light.

天 In the cover 750 of FIGS. 16 and 17, the top surface portion 751 has a flat plate shape whose surface is formed in a flat shape. For this reason, in the examples of FIGS. 16 and 17, the indicator 740 as a display component does not have a heat dispersion structure.

However, as in the examples of FIGS. 18 and 19, the heat dispersing structure 780 may be provided by disposing the cover uneven structure 781 on the viewing side portion 751a facing the viewing side on the top surface portion 751. Specifically, in the examples of FIGS. 18 and 19, the cover uneven structure 781 is formed in a Fresnel lens shape, so that near-infrared light transmitted through the top surface portion 751 is condensed, and the occupant can be efficiently illuminated. it can.

According to the seventh embodiment described above, a plurality of light emitting elements of a visible light emitting element 760 and an invisible light emitting element 761 are provided in the indicator 740 as a display component. Here, since the visible light emitting element 760 emits visible light to illuminate the display main body 41, the visibility of the display main body 41 is improved when performing display according to the position where the display main body 41 has moved. Therefore, the display quality of the pointer 740 is improved. At the same time, since the invisible light emitting element 761 emits invisible light, an additional function can be added to the pointer 740 by using the invisible light.

According to the seventh embodiment, the invisible light emitting element 761 emits near-infrared light that illuminates the viewer of the apparatus as invisible light. By illuminating the device viewer with near-infrared light from the vehicle display device 100 in this way, it becomes possible to illuminate the front without being noticed by the device viewer, so that the device viewer is monitored by, for example, a driver status monitor. In this case, the state of the device viewer can be grasped more accurately.

(Eighth embodiment)
As shown in FIG. 20 = 23, the eighth embodiment is a modification of the seventh embodiment. The eighth embodiment will be described focusing on the differences from the first embodiment.

In the eighth embodiment, as in the seventh embodiment, one visible light emitting element 860 and one invisible light emitting element 861 are provided, but the cover 50 is the same as that in the first embodiment.

The invisible light emitting element 861 of the eighth embodiment emits ultraviolet light as invisible light.

において In the display body 841 of the eighth embodiment, the introduction portion 843 has two

reflection surfaces

846a and 846b so as to extend from the indication portion 842 into two branches. The branching directions DDa, DDb of the reflecting

surfaces

846a, 846b form an obtuse angle with the extending direction ED of the pointing portion 842, respectively. The branch direction DDa of the reflection surface 846a and the branch direction DDb of the reflection surface 846b form an acute angle with each other.

The reflection surface 846a faces the visible light emitting element 860 with the introduction surface 847a interposed therebetween. The reflection surface 846b faces the invisible light emitting element 861 with the introduction surface 847b interposed therebetween. The introduction surfaces 847a and 847b of the present embodiment each have a planar shape along the direction in which the display panel 10 extends. The inclination angle θa formed by the reflection surface 846a with respect to the introduction surface 847a is different from the inclination angle θb formed by the reflection surface 846b with respect to the introduction surface 847b. Specifically, the inclination angle θa is larger than the inclination angle θb.

The visible light emitted by the visible light emitting element 860 is reflected by the reflecting surface 846a and is turned to the direction of the indicator 842, and the ultraviolet light emitted by the invisible light emitting element 861 is reflected by the reflecting surface 846b. Thus, the direction is changed so as to be directed to the instruction unit 842. However, the tendency of the visible light and the ultraviolet light to be emitted to the outside of the indicator 842 differs depending on the difference between the inclination angles θa and θb described above.

Specifically, the visible light that travels while being reflected a plurality of times inside the indicator 842 more frequently travels in a direction that forms a larger angle with respect to the stretching direction ED of the indicator 842 than the ultraviolet light. Radiation is emitted from various portions of the portion 842 to the outside. On the other hand, the ratio of the ultraviolet light traveling in a direction forming a small angle with respect to the extending direction ED of the indicator 842 is greater than that of the visible light, so Is emitted in a direction along the extension of the indicating section 842.

In the eighth embodiment, for example, an annular decorative ring 816 is provided on the outer peripheral side of the pointer 840 and the indicator 11 of the display panel 10 with the rotation center of the pointer 840 as a reference. (See FIG. 23). The decorating ring 816 has an inner peripheral wall 816a that faces the tip 842b of the indicator 842. The surface of the inner peripheral wall 816a is coated with a luminescent paint containing a luminescent substance that receives ultraviolet light and emits visible light, so that the inner peripheral wall 816a functions as a light emitting unit. In particular, the luminescent substance of the present embodiment is a fluorescent substance that causes a fluorescent phenomenon.

That is, the ultraviolet light emitted from the invisible light emitting element 861 is irradiated from the tip 842b of the indicator 842 to the inner peripheral wall 816a, so that the luminescent material emits visible light. A portion 816b on the extension of the portion 842 emits light. The light emission facilitates reading of the pointing position of the pointer 840 and information corresponding to the pointing position.

According to the eighth embodiment described above, the decorating ring 816 as a light emitting unit including a light emitting substance that receives ultraviolet light and emits visible light is further provided, and the invisible light emitting element 861 is configured as an invisible light. An ultraviolet light for illuminating the decoration ring 816 is emitted. When the decorative ring 816 emits light by the ultraviolet rays, a novel appearance can be brought out.

(Other embodiments)
Although a plurality of embodiments have been described above, the present disclosure is not construed as being limited to those embodiments, and may be applied to various embodiments and combinations without departing from the gist of the present disclosure. Can be.

Specifically, as a first modification, the non-contact power supply system is not limited to the magnetic field resonance system, and other systems such as an electromagnetic induction system, an electrolytic coupling system, a radio wave reception system, and a DC resonance system may be adopted.

As a second modification of the first embodiment, the density at which the main body protrusions 83 are arranged is smaller than the area A2 on the indicator side of the display main body 41 with respect to the connection shaft 44 as compared with the connection shaft 44. In the area A1 on the instruction unit side, the setting may not be high.

As a third modification example of the first embodiment, the main body uneven structure 81 may be provided on the display main body 41 on the viewing side instead of the rear side. Alternatively, the main body uneven structure 81 may be provided on both the back side and the viewing side.

As a fourth modification of the second embodiment, each cover recess 282a of the first cover uneven structure 281a may extend in a direction other than the axial direction AD. For example, as shown in FIG. 24, each cover concave portion 282a may be formed in a circular shape on the side surface portion 52 by extending in the circumferential direction of the cover 50, and may be arranged in the axial direction AD with each other.

As Modification Example 5 relating to the second embodiment, any one or any two of the first cover uneven structure 281a, the second cover uneven structure 281b, and the third cover uneven structure 281c may be employed. .

As a sixth modification of the third to fifth embodiments, for example, electronic components such as a power storage component, a buzzer, and a sensor can be arranged on the

substrates

372 and 472 or in the space inside the cover.

As a seventh modification of the seventh embodiment, the invisible light emitted by the invisible light emitting element 761 may be ultraviolet light that illuminates a viewer of the apparatus.

変形 As a modified example 8 of the eighth embodiment, the light emitting substance is not limited to a fluorescent substance, and may be a phosphorescent substance that causes a phosphorescence phenomenon.

As a ninth modification of the eighth embodiment, the indicator 11 provided on the display panel 10 is coated with a luminescent paint containing a luminescent substance, and the ultraviolet light emitted by the invisible light emitting element 861 is applied to the tip of the pointer 840. The index 11 may be configured to emit light by irradiating the index 11 from the side.

In Modification 10, any one of the light emitting element 60 and the power receiving circuit unit 70 may be disposed adjacent to the display main body 41, and the light emitting element 60 and the power receiving circuit unit 70 are separated from each other. It may be arranged.

In the eleventh modification, the light emitting element 60 is not limited to the light emitting diode, but may be a bulb, an EL element, a laser, or the like.

In the twelfth modification, the display component is not limited to the needle-shaped hands 40. For example, as the display component, a needle-shaped engraving may be provided on a rotatable disk-shaped translucent component, and a pointer component that displays information according to the engraving instruction position may be employed. Further, for example, as a display component, a ring component or a frame component formed so as to divide a display area, in order to switch the display mode of the vehicle display device according to the traveling mode of the vehicle or the occupant's preference. Alternatively, a display area division component configured to be movable as appropriate may be employed. Further, for example, as the display component, a component that is not movable and that switches a display mode (for example, an indicator lamp display, a symbol display, or the like) by changing the lighting or non-lighting of the light emitting element may be employed.

Claims

A display device for a vehicle, which is used for a vehicle and includes display components (40, 240, 340, 440, 540, 640),
The display component includes:
A display body (41) which is a viewing target and performs display;
A light emitting element (60, 360, 460, 560) for emitting light to illuminate the display body;
A power receiving circuit unit (70, 370, 470, 570) configured to be capable of receiving power by non-contact power supply and causing the light emitting element to emit light by the received power.
At least one of the light emitting element and the power receiving circuit unit is disposed adjacent to the display body,
The display device for a vehicle, wherein the display component includes a heat dispersing structure (80, 280, 380, 480, 580, 680, 780) for dispersing the heat generated at least at one of the display components.
2. The vehicle display according to claim 1, wherein a main body concave / convex structure (81) in which main body concave portions (82) and main body convex portions (83) are alternately arranged on the surface of the display main body is provided as the heat distribution structure. 3. apparatus.
An indicator (42) for indicating an index (11), an indicator (43) for introducing light from the light emitting element and guiding the indicator to the indicator, A connecting shaft portion (44) for connecting the introduction portion to the movement (30), which is integrated with the display main body, and is a pointer movable by driving the movement;
The plurality of main body protrusions provided in the main body concave-convex structure connect the introduction portion and the connection shaft in a beam shape, and are formed in a wall shape extending radially from the connection shaft. 3. The display device for a vehicle according to 2.
4. The vehicle display device according to claim 3, wherein a center of gravity of the light emitting element and the power receiving circuit unit is located on a side opposite to the indication unit with respect to the connection shaft unit. 5.
The vehicle display device according to claim 3, wherein the density of each of the main body protrusions is set higher on the side of the non-instruction portion than on the side of the instruction portion with reference to the connection shaft portion.
6. The vehicle display device according to claim 1, wherein the display component further includes a cover (50, 550, 750) that covers at least a part of the light emitting element and the power receiving circuit unit. 7.
As the heat dispersing structure, a cover concave / convex structure (281a, 281b, 281c, 781) in which cover concave portions (282a, 282b, 282c) and cover convex portions (283a, 283b, 283c) are alternately arranged on the surface of the cover. The vehicle display device according to claim 6, wherein the display device is provided.
The vehicle display device according to claim 7, wherein the cover uneven structure includes a hairline structure formed on a viewing side portion (51a) of the surface of the cover.
8. The vehicle display according to claim 6, wherein the power receiving circuit unit includes a coil (571 a) formed in a hairline structure in which metal wires are arranged in a spiral shape at a viewing side portion of the surface of the cover. 9. apparatus.
The print pattern structure (381, 481) in which the coil (371b, 471b) of the power receiving circuit portion is formed in a print pattern extending on a substrate (372, 472) is provided as the heat distribution structure. 9. The display device for a vehicle according to any one of items 1 to 8.
The vehicle display device according to claim 10, wherein the substrate is a flexible substrate curved along the surface of the display body.
The embedded structure (681) in which the light emitting element and the power receiving circuit section are embedded by a light-transmissive substrate (682) is provided as the heat dispersion structure. Display device for vehicles.
The vehicle display device according to claim 12, wherein the translucent substrate is formed integrally with the display body.
The light emitting element is a visible light emitting element that emits visible light,
The vehicle display device according to any one of claims 1 to 13, wherein the display component includes an invisible light emitting element (761) that emits invisible light, separately from the visible light emitting element.
A display device for a vehicle, which is used for a vehicle and includes a display component (740, 840),
The display component includes:
A display main body (741, 841) which is a viewing target and performs display;
A power receiving circuit unit (70) configured to receive power by non-contact power feeding,
A visible light emitting element (760, 860) for emitting visible light by the power received by the power receiving circuit unit to illuminate the display main body;
A vehicle display device comprising: an invisible light emitting element (761, 861) that emits invisible light by power received by the power receiving circuit unit.
The vehicle display device according to claim 14, wherein the invisible light emitting element emits near-infrared light that illuminates a viewer of the device as the invisible light.
A light-emitting unit (816) including a light-emitting substance that receives ultraviolet light and emits visible light;
The display device for a vehicle according to claim 14, wherein the invisible light emitting element emits ultraviolet light that illuminates the light emitting unit as the invisible light.