JP5385109B2 - Instrument device - Google Patents

Description

  TECHNICAL FIELD The present invention relates to an instrument device that is mounted on a moving body such as an automobile and that indicates a dial display design by rotating a pointer, and in particular, an instrument device in which an internal unit that rotates the pointer is arranged on the front side of the dial. About.

  A moving body such as an automobile or a ship is equipped with an instrument device for displaying information measured by various measuring means to passengers of the moving body. Among such instrument devices, an analog instrument device using a pointer includes a type in which the pointer is shined by light from a light source (see, for example, Patent Document 1).

  The instrument device described in Patent Document 1 includes a dial plate with a scale as a display design, a main board arranged on the back side of the dial board, and a main board arranged on the front side of the dial board. And a pointer disposed between the dial and the auxiliary board. The pointer is attached to the output shaft of the internal unit on the auxiliary board and rotates to indicate the display design. As described above, the instrument device described in Patent Document 1 achieves downsizing (thinning) by providing the internal unit on the auxiliary board and arranging it in the existing space on the front side of the dial. .

  Moreover, in the above-described instrument device, the pointer light source is shined by the pointer light source provided on the back surface of the auxiliary board, while the dial light source for shining the dial is not provided. Depending on the situation, the visibility of the scale may be reduced.

JP 2004-279124 A

  Therefore, in the above-described instrument device, for example, a dial light source may be provided on the main board, and a light guide plate for guiding the light from the dial light source to the dial may be provided. The light guide plate includes, for example, a light receiving portion opposed to the light source for the dial plate, and a light guide portion connected to the light receiving portion and superimposed on the back surface of the dial plate. However, when the dial light source is provided on the main board, there is a problem that the instrument device is enlarged (thickened) due to the protruding amount of the dial light source from the main board or the light receiving portion of the light guide plate. there were.

  As another method, it is conceivable to provide a light source for a dial plate on the back surface of the auxiliary substrate and further provide the light guide plate described above. However, simply by providing a dial light source on the back of the auxiliary board, the light of the dial light source leaks directly or leaks from the light receiving part toward the front of the dial and illuminates the entire front of the dial. There was a problem that it was difficult to see the scale.

  The present invention aims to solve such problems. That is, an object of the present invention is to provide an instrument device that can be reduced in size and improve the visibility of a dial.

In order to solve the problems and achieve the object, the invention described in claim 1 includes a dial plate on which a display design is formed, a substrate disposed on the front side of the dial plate, the dial plate, a meter apparatus, comprising: a guidance is provided between the substrate and to rotate is attached to the inner machine on the substrate to instruct the display design, the, in the substrate, wherein the front and relative to the dial A light source for a dial plate provided on the back surface of the dial, a light receiving portion that is made of a translucent material, and that faces the light source for the dial plate, and a light guide that is connected to the light receiving portion and is superimposed on the back surface of the dial plate. A light guide plate having a light portion; and a light-shielding material. The light source for the dial plate, the light receiving portion, and the dial plate are partitioned and light directed toward the front surface of the dial plate. An instrument device comprising a light shielding portion for shielding.

  According to a second aspect of the present invention, in the instrument device according to the first aspect, a pointer light source provided on the back surface of the substrate and opposed to a base end portion serving as a rotation center of the pointer, and a light shielding property A cylindrical second light-shielding portion that is erected from the back surface of the substrate and surrounds the pointer light source; and a light-shielding material that is erected from the base end toward the substrate. And a cylindrical third light-shielding portion surrounding the second light-shielding portion.

  According to a third aspect of the present invention, in the instrument device according to the first or second aspect, the back surface of the light guide portion on the side away from the dial and the portion corresponding to the display design, The instrument device is characterized in that a diffusion portion for diffusing the light in the light guide portion is provided.

  According to the invention described in claim 1, since the light source for the dial plate and the light receiving portion of the light guide plate are positioned in the space between the substrate and the dial plate, the instrument device can be downsized (thinned). Furthermore, even if a dial light source is provided on the front side of the dial, the light shielding part blocks light that leaks from the dial light source or light receiving part and goes toward the front of the dial. The visibility of the display design can be improved without being illuminated.

  According to the invention described in claim 2, since the pointer light source is positioned in the space between the substrate and the dial, the instrument device can be further downsized (thinned). Further, since the second light shielding portion and the third light shielding portion block light from the light source for the pointer toward the front surface of the dial, not only the pointer can be sufficiently shined but also the front surface of the dial is illuminated. Therefore, the visibility of the display design can be improved.

  According to the third aspect of the present invention, since the diffusing portion diffuses the light in the light guide portion, the display design can be evenly shined, and the visibility of the display design can be improved.

It is a top view of the instrument apparatus concerning one Embodiment of this invention. It is a top view which shows the inside of the instrument apparatus shown by FIG. It is sectional drawing along the III-III line in FIG. 2 of the instrument apparatus shown by FIG. It is sectional drawing which expands and shows the principal part of FIG. It is a top view of the back cover shown by FIG. FIG. 3 is a plan view of the dial plate shown in FIG. 2. FIG. 3 is a plan view of the substrate shown in FIG. 2. FIG. 3 is a perspective view of a light guide plate and a light shielding unit illustrated in FIG. 2. FIG. 9 is a cross-sectional view taken along the line IX-IX in FIG. 8, showing a state where a light shielding portion is superimposed on the light guide plate shown in FIG. 8.

  Hereinafter, an instrument device 1 according to an embodiment of the present invention will be described with reference to FIGS. 1 to 9. The instrument device 1 shown in FIG. 1 according to an embodiment of the present invention is a speedometer that is mounted on a moving body such as an automobile and displays the vehicle speed of the moving body to an occupant of the moving body. As shown in FIG. 3, the instrument device 1 includes a back cover 10, a front panel 20, a front glass 21, and a display instrument 3.

  The back cover 10 is made of a synthetic resin having a color that easily reflects light such as white. As shown in FIGS. 4 and 5, the back cover 10 includes a bottom wall 11 and a peripheral wall 12 erected from the outer edge of the bottom wall 11, and is formed in a box shape opened to the front panel 20 side. On the inner surface 10 a of the bottom wall 11, an accommodation recess 13 having a C shape in plan view is formed. The accommodation recess 13 is formed in a planar shape substantially equal to a light guide part 51 of the light guide plate 5 described later, and accommodates the light guide part 51 inside. In addition, an inner wall 14 having a U-shape in plan view on which the light receiving portion 52 of the light guide plate 5 is overlapped is provided opposite to the outer edge portion of the housing recess 13.

  As shown in FIG. 3, the front panel 20 is attached to the peripheral wall 12 of the back cover 10 so as to cover the opening of the back cover 10. The display instrument 3 is accommodated in the space between the front panel 20 and the back cover 10. The front panel 20 is provided with an exposure window 20a that exposes the periphery of a scale 32 of a dial 31 to be described later to an occupant. The front panel 20 shields the occupant except for the area around the scale 32.

  The front glass 21 is made of a transparent synthetic resin and is formed in a plate shape. The front glass 21 is attached to the front panel 20 so as to cover the exposed window 20a, and prevents dust and the like from entering the instrument device 1.

  As shown in FIG. 3, the display instrument 3 includes a dial 31, a substrate 33, a movement 35 as an internal unit, a dial LED 36 as a dial light source, and a pointer LED 37 as a pointer light source. The pointer 4 and the light guide plate 5 are provided.

  The dial 31 is formed in a plate shape. As shown in FIG. 4, the dial 31 includes a dial main body 31c made of a synthetic resin having translucency, and a light-shielding light-shielding layer formed on the surface of the dial main body facing the passenger. 31d. The surface of the light shielding layer 31 d forms a front surface 31 a that faces the occupant of the dial 31. Further, by not forming part of the light shielding layer 31d, a scale 32 as a display design for displaying the vehicle speed is formed on the front surface 31a of the dial 31 as shown in FIG.

  The scale 32 includes an inner edge scale and a numerical scale arranged outside the inner edge scale. The inner edge scale and the numerical scale are arranged in a C shape on the dial 31 respectively. The dial 31 is superimposed on the inner surface 10a of the back cover 10, and is attached to the back cover 10 by being locked to a locking claw (not shown) standing from the inner surface 10a.

  The substrate 33 is a known printed circuit board and is formed in a flat plate shape. A predetermined circuit pattern (not shown) is formed on the substrate 33, and as shown in FIG. 7, electronic components such as a microcomputer for controlling the operation of the dial LED 36, the pointer LED 37, the movement 35, etc. (Not shown) is mounted, and the movement 35 is attached. Further, as shown in FIG. 3, the substrate 33 is attached to the front panel 20 in a direction parallel to the planar direction of the front panel 20 by being engaged with a locking claw 20 b erected from the back surface of the front panel 20. . When the front panel 20 is attached to the back cover 10, the substrate 33 is arranged on the front surface 31 a side of the dial 31.

  The movement 35 is connected to vehicle speed measuring means (not shown) mounted on the vehicle. The movement 35 includes an output shaft 35a that rotates in accordance with the measurement amount measured by the vehicle speed measurement means. The movement 35 is attached to the front surface 33 a of the substrate 33 on the side away from the dial 31, and the output shaft 35 a protrudes through the shaft through hole 34 penetrating the substrate 33 to the back surface 33 b side.

  The dial LED 36 is mounted on the rear surface 33 b of the substrate 33 on the side facing the dial 31. Further, as shown in FIG. 7, the dial LED 36 is disposed at two locations on the back surface 33 b opposite to the pair of light receiving parts 52 of the light guide plate 5, and a plurality of each (36 in the illustrated example). ) Is provided.

  As shown in FIG. 4, the pointer LED 37 is mounted on the back surface 33 b of the substrate 33. The pointer LED 37 is disposed closer to the shaft hole 34 than the dial LED 36 and is disposed on the outer edge of the shaft hole 34, and is disposed on the opposite side of the movement 35 with the substrate 33 interposed therebetween. The pointer LED 37 is disposed at a position facing the base end portion 4a of the pointer 4 (the light receiving surface 42a of the pointer main body 41) on the back surface 33b.

  The pointer 4 is arranged between the board 33 and the dial 31 and is rotated by the movement 35 in accordance with the measurement amount measured by the vehicle speed measuring means, and indicates the scale 32 to display the measurement amount. The pointer 4 includes a pointer main body 41 made of a synthetic resin having translucency, and a pointer rod 44 and a pointer cap 47 made of a synthetic resin having a light shielding property.

  The pointer main body 41 is integrally provided with a light receiving unit 42 and an instruction unit 43. The light receiving unit 42 is provided at one end of the pointer main body 41. The light receiving unit 42 includes a light receiving surface 42a on which light of the pointer LED 37 is incident relative to the pointer LED 37, and a reflective surface 42b that reflects light incident on the light receiving unit 42 from the light receiving surface 42a toward the pointing unit 43. And are provided. The instruction unit 43 is connected to a portion away from the light receiving surface 42 a and the reflecting surface 42 b of the light receiving unit 42, and is formed so as to become gradually thinner as the distance from the light receiving unit 42 increases.

  The pointer rod 44 is integrally provided with a substantially disk-shaped upper wall 45 and an upper cover 46 that is continuous with the upper wall 45 and extends in the outer peripheral direction of the upper wall 45. The light receiving portion 42 of the pointer main body 41 is overlaid on the lower surface of the upper wall 45 in FIG. The upper wall 45 has a light receiving hole 45a that exposes the light receiving surface 42a to the outside. Further, a fitting recess 45b is provided on the upper surface of the upper wall 45 in FIG. The fitting recess 45b is provided at the center of the upper wall 45, and the output shaft 35a of the movement 35 is fitted therein.

  The upper cover 46 is formed in a bowl-like shape with the tip closed, and covers the tip surface, both side surfaces, and the front surface (the surface facing the occupant) of the instruction portion 43 by positioning the instruction portion 43 inside. Further, the upper cover 46 has an exposure hole 46 a that exposes a part of the front surface of the indicating unit 43 to the outside on the distal end side of the indicating unit 43.

  The pointer cap 47 is integrally provided with a disc-shaped bottom wall 48 and a lower cover 49 that is continuous with the bottom wall 48 and extends in the outer peripheral direction of the bottom wall 48. The bottom wall 48 sandwiches the light receiving portion 42 of the pointer body 41 between the bottom wall 48 and the upper wall 45 of the pointer rod 44. The lower cover 49 is formed in a plate shape, covers the opening of the upper cover 46, and covers the back surface of the instruction unit 43.

  In the above-described pointer main body 41, the light receiving portion 42 is overlapped on the upper wall 45 of the pointer rod 44, the light receiving surface 42a is exposed to the outside from the light receiving hole 45a, and the pointing portion 43 is positioned in the upper cover 46. 44. Thereafter, the pointer cap 47 is attached to the pointer rod 44 so that the pointer main body 41 is sandwiched between the pointer rod 44 and the pointer 4 is assembled.

  The pointer 4 is attached to the output shaft 35a by fitting the output shaft 35a of the movement 35 on the substrate 33 into the fitting recess 45b, and is composed of a light receiving portion 42, an upper wall 45 and a bottom wall 48. The scale 32 on the dial 31 is indicated. The base end portion 4 a is opposed to the pointer LED 37.

  Then, as indicated by the alternate long and short dash line in FIG. 4, the light from the pointer LED 37 enters the light receiving unit 42 from the light receiving surface 42 a and is reflected toward the indicating unit 43 by the reflecting surface 42 b, and then the indicating unit 43. The light is emitted toward the occupant from the portion exposed through the exposure hole 46a of the pointing portion 43. In this way, the occupant visually recognizes the pointer 4 shined by the light of the pointer LED 37.

  The light guide plate 5 is made of a synthetic resin (translucent material) having translucency, and integrally includes a light guide part 51 and a light receiving part 52 as shown in FIG. The light guide unit 51 is formed in a flat plate shape having a C-shape (horse-shoe shape) in a plan view. The light guide 51 is formed in a C-shape such that the outer edge overlaps the scale 32 on the dial 31. The light guide 51 is formed so as to gradually become thinner toward the outer edge.

  Further, the light guide unit 51 is provided with a diffusion unit 53. As shown in FIGS. 3, 4, and 9 (shown in a sawtooth shape for convenience), the diffusion unit 53 is provided on the back surface 51 b of the light guide unit 51 on the side away from the dial 31, It is provided at a portion corresponding to the scale 32 of the dial 31 provided at the outer edge. The diffusing portion 53 is formed by applying a texture to the back surface 51b, and is a rough surface having many fine irregularities. The diffusion part 53 can be formed, for example, by making the inner surface of a mold for molding the light guide plate 5 into a textured shape. The diffusing portion 53 may be a rough surface having many fine grooves having a V-shaped cross section.

  As shown in FIG. 8, a pair of light receiving parts 52 are provided so as to be connected to both ends of the light guide part 51. The light receiving unit 52 is formed in a plate shape thicker than the light guide unit 51, and stands in a direction substantially orthogonal to the planar direction of the light guide unit 51 from the front surface 51 a on which the dial 31 of the light guide unit 51 is superimposed. ing.

  A reflection surface 54 and an inclined surface 55 are provided at a corner portion where the light guide portion 51 and the light receiving portion 52 are continuous. The reflection surface 54 is provided outside the corner portion, and is inclined so as to intersect both the planar direction of the light receiving unit 52 and the planar direction of the light guide unit 51. The reflection surface 54 reflects the light in the light receiving unit 52 toward the light guide unit 51. The inclined surface 55 is provided inside the corner portion, and is inclined in a direction parallel to the reflecting surface 54.

  In the light guide plate 5 described above, the back surface 51 b of the light guide unit 51 is brought close to the back cover 10 in a direction facing the inner surface 10 a of the back cover 10, and the light guide unit 51 is housed in the housing recess 13. One surface and both side surfaces are overlapped with the inner wall 14 and positioned at a predetermined position of the back cover 10, and then locked to a locking claw (not shown) standing from the inner surface 10 a and attached to the back cover 10. It is done. Then, the front surface 51a of the light guide 51 is flush with the inner surface 10a, and when the dial plate 31 is overlapped with the inner surface 10a of the back cover 10, the light guide plate 5 is sandwiched between the back cover 10 and the dial plate 31. The front surface 51 a is overlaid on the dial 31.

  When the front panel 20 is attached to the back cover 10, the front end surface 52 a of the light receiving portion 52 is opposed to the dial LED 36 on the substrate 33 locked to the front panel 20. The light from the dial LED 36 enters the light receiving portion 52 from the front end surface 52 a as shown by a one-dot chain line in FIG. 4, and then is reflected toward the light guiding portion 51 by the reflecting surface 54. To reach the diffusion unit 53. The light that has reached the diffusing portion 53 is diffused by the diffusing portion 53, and is uniformly emitted from the front surface 51 a of the light guide portion 51 and from the outer edge portion of the light guide portion 51 toward the dial plate 31. It radiates from the scale 32 of the dial 31 toward the passenger. Thus, the occupant visually recognizes the scale 32 shined by the light from the dial LED 36.

  The instrument device 1 described above further includes a light shielding part 6, a second light shielding part 7, and a third light shielding part 8. The light shielding part 6, the second light shielding part 7, and the third light shielding part 8 are made of a synthetic resin (light shielding material) having a light shielding property such as a black synthetic resin.

  As shown in FIGS. 8 and 9, the light shielding unit 6 includes a flat plate portion 61 and an inclined piece 62 that is continuous with the flat plate portion 61. The flat plate portion 61 is formed in a rectangular plate shape, has a width substantially equal to the light receiving portion 52 of the light guide plate 5 and is longer than the light receiving portion 52. The inclined piece 62 is formed to have a width substantially equal to that of the light receiving portion 52 and is inclined with respect to the planar direction of the flat plate portion 61 from the entire outer edge on one end side in the longitudinal direction (vertical direction in FIG. 8) of the flat plate portion 61. Is standing.

  As shown in FIG. 9, in the light shielding unit 6 described above, the flat plate portion 61 is overlaid on the surface 52 b of the light receiving portion 52 of the light guide plate 5 facing the dial 31, and the inclined piece 62 is overlaid on the inclined surface 55. . Thereafter, the light-shielding portion 6 is attached to the back cover 10 by being locked to locking claws (not shown) standing from the inner surface 10 a of the back cover 10. When the front panel 20 to which the substrate 33 is attached is attached to the back cover 10, the end surface 61 a of the flat plate portion 61 is superimposed on the back surface 33 b of the substrate 33, and the light of the dial LED 36 is directly applied to the front surface of the dial 31. It prevents going to 31a.

  Furthermore, the end surface 62a of the inclined piece 62 is overlapped with the outer peripheral surface of the dial 31 to prevent light passing through the light receiving portion 52 from being emitted from the surface 52b to the front surface 31a of the dial 31. In this way, the light shielding unit 6 divides the dial LED 36 and the light receiving unit 52 and the dial 31 from each other and transmits light from the dial LED 36 and the light receiving unit 52 toward the front surface 31 a of the dial 31. Block.

  As shown in FIG. 4, the second light shielding part 7 is provided on the substrate 33. The second light shielding portion 7 is formed in a cylindrical shape standing from the back surface 33 b of the substrate 33. The second light shielding portion 7 is formed so as to surround the through hole 34. The second light-shielding portion 7 is formed with an inner diameter larger than the distance between the output shaft 35 a in the through-hole 34 and the pointer LED 37 and surrounds the pointer LED 37.

  As shown in FIG. 4, the third light-shielding portion 8 is provided on the pointer 4 and is formed integrally with the pointer collar 44. The third light-shielding portion 8 is formed in a cylindrical shape erected in a direction away from the pointer cap 47 from the entire outer periphery of the upper wall 45 of the pointer collar 44 (the base end portion 4a of the pointer 4). The third light shielding part 8 is formed with an inner diameter larger than the outer diameter of the second light shielding part 7. The third light-shielding portion 8 is formed with a protruding amount such that the tip portion overlaps the tip portion of the second light-shielding portion 7 when the pointer 4 is attached to the movement 35 on the substrate 33.

  When the pointer 4 is attached to the movement 35 on the substrate 33, the third light shielding portion 8 described above is erected toward the substrate 33, and the tip portion is positioned so that the tip portion of the second light shielding portion 7 is located inside. The light shielding part 7 is surrounded. The opening of the second light shielding part 7 is covered with the third light shielding part 8 and the upper wall 45 of the pointer rod 44. The second light-shielding part 7 and the third light-shielding part 8 shield light from the pointer LED 37 toward the front surface 31 a of the dial 31.

  When assembling the instrument device 1 having the above-described configuration, first, the light guide plate 5 is brought close to the back cover 10, the light guide portion 51 is positioned in the housing recess 13, and the light receiving portion 52 is overlaid on the inner wall 14. The light plate 5 is attached to the back cover 10. Next, the light shielding unit 6 is attached to the back cover 10 so as to overlap the surface 52 b and the inclined surface 55 of the light receiving unit 52, and the light receiving unit 52 is surrounded by the light shielding unit 6 and the inner wall 14. Then, the dial 31 is attached to the back cover 10 so as to overlap the front surface 51 a of the light guide 51 and the inner surface 10 a of the back cover 10.

  Further, the movement 35 is attached to the front surface 33a of the substrate 33 on which the dial LED 36 and the pointer LED 37 are mounted on the back surface 33b, and the pointer 4 is attached to the output shaft 35a protruding to the back surface 33b side. Then, the third light-shielding portion 8 surrounds the second light-shielding portion 7, the third light-shielding portion 8 and the base end portion 4 a of the pointer 4 cover the opening of the second light-shielding portion 7, and the base end portion 4 a is connected to the pointer LED 37. Relative. Next, the substrate 33 is attached to the front panel 20 in such an orientation that the pointer 4 is positioned between the dial 31. Finally, the instrument panel 1 is assembled by attaching the front panel 20 to the back cover 10.

  When the instrument device 1 is assembled in this way, as shown in FIG. 4, the dial LED 36 and the pointer LED 37 protrude from the substrate 33 toward the dial 31, and the pointer 4 between the substrate 33 and the dial 31 is arranged. Positioned in the space to be played. The dial LED 36 faces the light receiving portion 52 of the light guide plate 5. The light from the dial LED 36 enters the light receiving portion 52 and reaches the reflecting surface 54 without leaking to the front surface 31 a side of the dial 31 by the light shielding portion 6. Thereafter, the light reflected by the reflecting surface 54 toward the light guide 51 is diffused by the diffusion unit 53 and then uniformly emitted from the light guide 51 toward the dial 31, and from the scale 32 of the dial 31. Radiated toward the passenger.

  The light from the LED 37 for the pointer is radiated from the exposure hole 46a toward the occupant after entering the pointer main body 41 without leaking to the front surface 31a side of the dial 31 by the second light shielding portion 7 and the third light shielding portion 8. Is done. In this way, the occupant visually recognizes the dial 31 where the dial LED 36 and the pointer LED 37 are not leaked and only the scale 32 is shining uniformly.

  According to the present embodiment, the dial LED 36 and the light receiving portion 52 of the light guide plate 5 are positioned in the space between the substrate 33 and the dial 31, so that the instrument device 1 can be downsized (thinned). Furthermore, even if the dial LED 36 is provided on the front surface 31a side of the dial 31, the light shielding portion 6 blocks light that leaks from the dial LED 36 or the light receiving portion 52 and travels toward the front surface 31a. The visibility of the scale 32 can be improved without being illuminated.

  Moreover, since the pointer LED 37 is positioned in the space between the substrate 33 and the dial 31, the instrument device 1 can be further downsized (thinned). Further, since the pointer LED 37 is provided on the opposite side of the movement 35 with the substrate 33 interposed therebetween, it is not necessary to secure a space for mounting the pointer LED 37 on the substrate 33, and the instrument device 1 can be further downsized. . Furthermore, since the second light-shielding portion 7 and the third light-shielding portion 8 block light from the pointer LED 37 toward the front surface 31a of the dial 31, not only can the pointer 4 be sufficiently brilliant, but also the front surface 31a. Is no longer illuminated, and the visibility of the scale 32 can be further improved.

  Moreover, since the diffusion part 53 diffuses the light in the light guide part 51, the scale 32 of the dial 31 can be uniformly shined, and the visibility of the scale 32 can be further improved.

  In the embodiment described above, the instrument device 1 is a speedometer, but it may be a tachometer, a vehicle combination meter provided with a speedometer, a tachometer, or the like. In the above-described embodiment, the third light shielding unit 8 surrounds the second light shielding unit 7. However, the second light shielding unit 7 may surround the third light shielding unit 8.

  The above-described embodiments are merely representative examples of the present invention, and the present invention is not limited to the above-described embodiments. That is, various modifications can be made without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Instrument apparatus 4 Pointer 4a Base end part 5 Light guide plate 6 Light-shielding part 7 2nd light-shielding part 8 3rd light-shielding part 31 Dial 31a Front surface 31b Back surface 32 Scale (display design)
33 Substrate 33b Backside 35 Movement (internal unit)
36 LED for dial (light source for dial)
37 LED for pointer (light source for pointer)
51 Light guide part 51b Back surface 52 Light receiving part 53 Diffusion part

Claims (3)

A dial plate on which a display design is formed, a substrate disposed on the front side of the dial plate, and disposed between the dial plate and the substrate and attached to an internal unit on the substrate to rotate and display the display An instrument device comprising a guide for design indication,
In the substrate, and the dial plate for a light source provided on the back surface of the front and opposite sides of the dial,
A light guide plate that is made of a translucent material and has a light receiving portion that faces the light source for the dial plate, and a light guide portion that is connected to the light receiving portion and is superimposed on the back surface of the dial plate,
The light source for the dial plate and the light receiving unit, which are made of a light-shielding material, and a light-shielding unit that partitions light between the dial plate and blocks the light traveling toward the front surface of the dial plate. An instrument device. A pointer light source provided on the back surface of the substrate and facing a base end serving as a rotation center of the pointer;
A cylindrical second light-shielding portion, which is made of a light-shielding material and stands upright from the back surface of the substrate and surrounds the pointer light source;
2. A cylindrical third light-shielding portion that is made of a light-shielding material and that stands up from the base end portion toward the substrate and surrounds the second light-shielding portion. Instrument equipment.   The diffusion part which diffuses the light in the said light guide part was provided in the part corresponding to the said display design in the back surface on the side away from the said dial of the said light guide part, The Claim 1 or Claim characterized by the above-mentioned. Item 3. The instrument device according to Item 2.

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