JP2017058143A - Display device and light guide member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device and a light guide member in which a design characteristic when the light guide member is lighted is heightened.SOLUTION: A display device 10 comprises: a case 30; a display board 45 installed on the front side of the case 30 and having graduations marked thereon; a light source for emitting light in a direction heading toward the display board 45 and installed inside the case 30; an opening edge of a facing plate located on the front side of the display board 45 and enclosing the graduations of the display board 45; and a light guide member 50, located between the facing plate and the display board 45, which shines along the inner circumference of the opening edge as it guides light from the light guide. The light guide member 50 is provided with a body unit 51 formed in shape of a ring along the inner circumference of the opening edge of the facing plate, and first to fourth fitting parts 52a-52d, formed on the rear face of the body unit 51 facing the case 30, which penetrate the display board 45 and fit into first to fourth fitting recesses 37a-37d of the case 30.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a display device and a light guide member.

  Conventionally, as described in Patent Document 1, for example, a display device includes a dial, a dial that surrounds a region where a scale of the dial is printed, and a ring-shaped light guide member (inside the dial) ( A ring-shaped translucent portion) and a light source that irradiates light to the light guide member. As described in FIG. 3 of Patent Document 1 and the paragraph [0028] of the specification, etc., the light guide member is formed with a protrusion protruding outward from the outer peripheral surface thereof, and the protrusion is provided in turn. Holes corresponding to the fixing protrusions are formed. The light guide member is fixed in reverse by fitting the fixed fixing protrusion in the hole of the protrusion of the light guide member.

JP 2002-257602 A

  In the configuration described in Patent Document 1, a protrusion for positioning is formed on the outer peripheral wall of the light guide member. Since the light from the light source spreads over the entire area of the light guide member, the light from the light source spreads also to the protrusions of the light guide member. Therefore, for the viewer, there is no outer peripheral wall only in a portion corresponding to the protrusion in the ring-shaped light along the light guide member, and it seems that the light spreads outward only in that portion. For this reason, the designability of the display apparatus at the time of making a light guide member shine was impaired.

  This invention is made | formed in view of the said actual condition, and aims at providing the display apparatus and light guide member which improved the designability at the time of making a light guide member shine.

  In order to achieve the above object, a display device according to the present invention includes a case, a display plate installed on the front side of the case and provided with a design, and installed in the case so as to emit light in a direction toward the display plate. A light source that emits light, located on the front side of the display plate, and a turn-around portion that surrounds the design of the display plate, and is located between the turn-back portion and the display plate, and guides light from the light source. A light guide member that shines along an inner periphery, wherein the light guide member is formed on a main body portion that is formed in an annular shape along the inner periphery of the facing portion, and on a back surface of the main body portion that faces the case. And a fitting portion that penetrates the display plate and fits into the case.

  In order to achieve the above object, a light guide member according to the present invention includes a case, a display plate installed on the front side of the case and provided with a design, and installed in the case in a direction toward the display plate. A light source that emits light, and a turn-around portion that is positioned on the front side of the display plate and surrounds the design of the display plate, is used between the turn-back portion and the display plate, and is located between the turn-off portion and the display plate. A light guide member that shines along the inner periphery of the facing portion by guiding the light, and is opposed to the case in the body portion formed in an annular shape along the inner periphery of the facing portion A fitting portion formed on the back surface and penetrating the display plate and fitting into the case.

  According to this invention, the designability at the time of making a light guide member shine can be improved.

1 is a simplified front view of a display device according to an embodiment of the present invention. It is a disassembled perspective view of the display apparatus which concerns on one Embodiment of this invention. It is a simplified sectional view of a portion corresponding to the 1st pointer type meter of a display concerning one embodiment of the present invention. It is a perspective view which shows the site | part corresponding to the 1st pointer type meter of the case which concerns on one Embodiment of this invention. It is a perspective view which shows the site | part corresponding to the 2nd pointer type instrument of the case which concerns on one Embodiment of this invention. It is a perspective view of the display board concerning one embodiment of the present invention. It is a perspective view of a light guide member, a case, and a display board concerning one embodiment of the present invention. It is a perspective view of the light guide member concerning one embodiment of the present invention. It is a top view of the light guide member concerning one embodiment of the present invention. It is a bottom view of the light guide member concerning one embodiment of the present invention.

  An embodiment of a display device according to the present invention will be described with reference to the drawings.

(Schematic configuration of display device)
As shown in FIG. 1, the display device 10 includes circular first and second pointer-type meters 11 and 12 arranged in the left-right direction as viewed from the driver, and first and second And a liquid crystal display 13 disposed between the pointer-type meters 11 and 12. The liquid crystal display 13 is composed of a TFT (Thin Film Transistor) type liquid crystal display module, and displays vehicle information such as an accumulated travel distance.

  The first pointer-type meter 11 represents the vehicle speed by the position of the pointer 15 with respect to the scale 41 arranged in an arc shape. The second pointer-type meter 12 represents the engine speed by the position of the pointer 15 with respect to the scale 41 arranged in an arc shape.

(Configuration of display device)
As shown in FIG. 2, the display device 10 includes a pointer 15, a substrate 40, a case 30, a display plate 45, a liquid crystal display 13, a rear cover 20, a turning member 60, and a light guide member 50. , Light sources 24, 25, and 26.

  The rear cover 20 is formed of a resin and has a box shape opened toward the turning member 60.

  The substrate 40 is a printed circuit board and is formed in a substantially rectangular plate shape. The substrate 40 is fitted into the rear cover 20. As shown in FIG. 3, the substrate 40 is formed with two circular through holes 41a penetrating in the thickness direction.

  Each of the light sources 24, 25, and 26 includes, for example, a plurality of LEDs (Light Emitting Diodes), and is mounted on the surface of the substrate 40 (the surface of the substrate 40 on the side of the turning member 60). As shown in FIG. 3, the light sources 24, 25, and 26 are installed in the order of the light source 25, the light source 24, and the light source 26 from a position close to each through hole 41 a. The light source 24 is for illuminating the display board 45. The light source 25 is for illuminating the pointer 15. The light source 26 is for making the light guide member 50 shine. The light sources 24, 25, and 26 are driven based on a control signal supplied from a control unit (not shown), and are turned on or off according to an illumination switch or the like operated by a vehicle driver.

  Further, as shown in FIG. 3, a pointer driving unit 22 is mounted on the back surface of the substrate 40 (the surface on the rear cover 20 side of the substrate 40). The pointer driving unit 22 includes a movable magnet type driving device, a stepping motor, and the like. The pointer driving unit 22 includes a columnar rotation shaft 22a that rotates about a shaft. The rotation shaft 22 a of the pointer driving unit 22 protrudes through the through hole 41 a of the substrate 40 to the front side of the substrate 40.

  As shown in FIG. 2, the case 30 is formed of a white synthetic resin, for example, polypropylene, and is formed so as to be fitted to the rear cover 20 with the substrate 40 interposed therebetween. A display board 45 is installed on the front side of the case 30.

  The parts corresponding to the first pointer-type instrument 11 of the case 30 are, as shown in FIG. 3 simply, an inner cylindrical part 31, an inclined part 32, a parallel part 33, an inclined part 34, and an outer cylindrical part. 35 and first to fourth light guide tube portions 36a to 36d. The inner cylinder portion 31 of the case 30 is formed in a cylindrical shape in the central portion of the first pointer type instrument 11. One end of the inner cylinder part 31 is in contact with the back surface of the display plate 45, and the other end of the inner cylinder part 31 is in contact between the light source 24 and the light source 25 on the surface of the substrate 40. The inner cylinder portion 31 functions as a light shielding wall that prevents the light emitted from the light source 24 and the light emitted from the light source 25 from being mixed.

  The inclined portion 32 of the case 30 is formed on the outer peripheral surface of the inner cylindrical portion 31 and is inclined toward the display plate 45 as it goes outward in the radial direction of the inner cylindrical portion 31. The inclined portion 32 is provided at a position facing the light source 24 in the thickness direction of the substrate 40, and reflects light from the light source 24 toward the parallel portion 33 and the inclined portion 34. The parallel part 33 of the case 30 is located outside the light source 24 and has an annular shape parallel to the substrate 40. The inclined portion 34 of the case 30 is connected to the outer peripheral end portion of the parallel portion 33 and is inclined so as to go toward the display plate 45 as it goes outward in the radial direction of the inner cylindrical portion 31. The inclined portion 34 of the case 30 reflects light emitted from the light source 24 toward the display plate 45. The outer cylindrical portion 35 of the case 30 has a cylindrical shape surrounding the inclined portion 34, and the inner peripheral surface of the outer cylindrical portion 35 is connected to the outer peripheral end of the inclined portion 34. One end of the outer cylinder part 35 is in contact with the back surface of the display plate 45, and the other end of the outer cylinder part 35 is in contact with the surface of the substrate 40.

  As shown in FIG. 4, the first to fourth light guide tube portions 36 a to 36 d of the case 30 are provided outside the outer tube portion 35. The first to fourth light guide tube portions 36a to 36d are arranged at equiangular intervals (90 ° in this example) with the inner tube portion 31 as the center. The first to fourth light guide tube portions 36a to 36d open toward the front surface and the back surface of the case 30, and are formed in a substantially pentagonal cylindrical shape in this example. One end of the first to fourth light guide tube portions 36 a to 36 d is in contact with the back surface of the display plate 45, and the other end of the first to fourth light guide tube portions 36 a to 36 d is in contact with the surface of the substrate 40. Yes. The light source 26 on the substrate 40 is located in the first to fourth light guide tube portions 36a to 36d.

As shown in FIG. 4, first to fourth fitting recesses 37 a to 37 d are formed in a portion of the surface of the case 30 corresponding to the first pointer-type instrument 11. The 1st-4th fitting recessed parts 37a-37d are provided in the vicinity of the 1st-4th light guide cylinder parts 36a-36d, respectively.
The 1st and 3rd fitting recessed parts 37a and 37c have a rectangular plate-shaped hole. The end of the first fitting recess 37a opposite to the outer cylindrical portion 35 is open. A through hole 37a1 is formed on the bottom surface of the first fitting recess 37a. The through-hole portion 37a1 has a long hole shape extending in the radial direction of the outer cylindrical portion 35. A true circular through-hole 37c1 is formed on the bottom surface of the third fitting recess 37c.
The second fitting recess 37b has a substantially square plate-like hole whose one side swells in a semicircular shape. The semicircular part of the second fitting recess 37 b faces the side opposite to the outer cylinder part 35. The fourth fitting recess 37d has a substantially rectangular plate-like hole in which a part of one side forms a semicircular shape. The semicircular portion of the fourth fitting recess 37 d faces the side opposite to the outer cylindrical portion 35.

  As shown in FIG. 5, the portion corresponding to the second pointer-type meter 12 of the case 30 has first to fourth light guides similar to the first to fourth light guide tube portions 36 a to 36 d described above. Cylindrical portions 136a to 136d and first to fourth fitting recesses 137a to 137d similar to the first to fourth fitting recesses 37a to 37d described above are formed. A true circular through hole 137b1 is formed on the bottom surface of the second fitting recess 137b. A long hole-shaped through hole 137d1 is formed on the bottom surface of the fourth fitting recess 137d. Unlike the portion corresponding to the first pointer-type meter 11 of the case 30 described above, no through-hole portion is formed on the bottom surfaces of the first and third fitting recesses 137a and 137c. Note that the inside of the case 30 corresponding to the second pointer-type meter 12 has the same configuration as the inside corresponding to the first pointer-type meter 11 described with reference to FIG.

  As shown in FIGS. 1 and 3, the display board 45 is formed by forming scales 41 as various printing layers on the front and back surfaces of a light-transmitting substrate made of a light-transmitting resin such as polycarbonate. The scale 41 is an example of a design. As shown in FIG. 6, the display plate 45 is formed with two circular through holes 45 a into which the pointers 15 of the first and second pointer-type meters 11 and 12 can be inserted. The display plate 45 is formed with a rectangular through hole 45b that exposes the screen of the liquid crystal display 13 to the front side. The display board 45 has positions and sizes corresponding to the first to fourth fitting recesses 37a to 37d and 137a to 137d and the first to fourth light guide cylinders 36a to 36d and 136a to 136d of the case 30. A through-hole 47 is formed.

  As shown in FIG. 3, the pointer 15 includes an instruction unit 16 and a pointer cap 17. The pointer cap 17 is formed of an opaque resin, and includes a boss portion 18 into which the tip end of the rotating shaft 22a is press-fitted, and a pointer seat 19 on which the instruction portion 16 is placed. The indicator 16 is made of a translucent resin and is formed in a rod shape that extends along the surface of the display panel 45. The pointer 15 is configured to be rotatable integrally with the rotation shaft 22 a by the pointer driving unit 22. As shown in FIG. 1, the vehicle speed or the engine speed is represented by the position of the pointer 15 with respect to the scale 41.

As shown in FIGS. 7 to 10, the light guide member 50 is formed of a transparent translucent resin. The light guide member 50 includes a main body 51 formed in a substantially annular shape, and first to fourth fitting portions 52 a to 52 d that fit in the first to fourth fitting recesses 37 a to 37 d of the case 30. , And first to fourth light incident portions 53a to 53d for guiding light from each light source 26 to the main body portion 51.
The main body 51 of the light guide member 50 includes a circular inner peripheral wall 51i and a substantially square outer peripheral wall 51o having an arc shape in which each side swells outward as viewed from the thickness direction. The inner peripheral wall 51i and the outer peripheral wall 51o are parallel to each other by being along the thickness direction of the main body 51.

  The first to fourth fitting parts 52 a to 52 d and the first to fourth light incident parts 53 a to 53 d are arranged at intervals of about 90 ° with the central axis of the main body part 51 as the center. The first to fourth light incident portions 53 a to 53 d are respectively provided at four corners of the main body 51 as viewed from the thickness direction of the main body 51. The first to fourth light incident portions 53 a to 53 d are located at the outer peripheral end portion of the back surface of the main body portion 51, and are formed in a triangular prism shape extending vertically from the back surface of the main body portion 51. As shown in FIG. 8, each of the light incident portions 53 a to 53 d branches into two along the main body portion 51 on the front side. That is, each of the light incident portions 53a to 53d has a substantially Y shape. In a state where the light guide member 50 is attached to the case 30, the light incident portions 53 a to 53 d extend toward the light sources 26 as illustrated in FIG. 3.

  As shown in FIG. 8, the first to fourth fitting portions 52a to 52d are positioned in the vicinity of the corresponding first to fourth light incident portions 53a to 53d, respectively. The first to fourth fitting portions 52 a to 52 d are formed on the back surface of the main body portion 51 (the surface facing the substrate 40 of the main body portion 51). As shown in FIG. 9, each of the fitting portions 52 a to 52 d extends from the main body portion 51 toward the radially outer side of the main body portion 51 over the outer peripheral wall 51 o when viewed from the thickness direction of the main body portion 51. . The area which overlaps with the main body 51 in each fitting part 52a-52d shown with the broken line of FIG. 9 is small compared with the area which does not overlap with the main body 51 in each fitting part 52a-52d.

As shown in FIG. 10, the first and third fitting portions 52a and 52c are formed in a rectangular plate shape. The longitudinal directions of the first and third fitting portions 52a and 52c are substantially perpendicular to the outer peripheral wall 51o. Hemispherical first and third convex portions 52a1 and 52c1 are formed on the back surfaces of the first and third fitting portions 52a and 52c, respectively. The 1st and 3rd convex parts 52a1 and 52c1 are located in the base end side (end part side near the main-body part 51) of the 1st and 3rd fitting parts 52a and 52c.
As shown in FIGS. 7 and 8, the third fitting portion 52 c is formed so as to be fitted in the third fitting recess 37 c of the case 30. When the third fitting portion 52c is fitted into the third fitting recess 37c, the third convex portion 52c1 of the third fitting portion 52c is fitted into the through hole portion 37c1 of the third fitting concave portion 37c. Match. The first fitting portion 52a is formed so as to be fitted in the first fitting recess 37a of the case 30. When the first fitting portion 52a is fitted into the first fitting recess 37a, the first convex portion 52a1 of the first fitting portion 52a is fitted into the through hole portion 37a1 of the first fitting recess 37a. Match.
The light guide member 50 is supported in the position of the through-hole part 37c1 of the case 30, and the 1st convex part 52a1 is further through-hole part 37a1 because the 3rd convex part 52c1 fits into the through-hole part 37c1. The light guide member 50 is restricted from rotating around the position of the through-hole portion 37c1 by being fitted into the through hole. Thereby, the light guide member 50 is stably attached to the case 30.

  As shown in FIGS. 7 and 10, the second fitting portion 52 b is formed in a substantially square plate shape with one side forming a semicircular shape. That is, the second fitting portion 52b is similar to the second fitting recess 37b of the case 30 so as to be fitted into the second fitting recess 37b, and is smaller than the second fitting recess 37b. It is formed. The fourth fitting portion 52d is formed in a substantially rectangular plate shape in which a part of the long side forms a semicircular shape. That is, the fourth fitting portion 52d is smaller than the fourth fitting recess 37d while being similar to the fourth fitting recess 37d of the case 30 so as to fit into the fourth fitting recess 37d. It is formed. The semicircular portions of the second and fourth fitting portions 52 b and 52 d are located on the radially outer side of the light guide member 50.

  As shown in FIG. 8, hemispherical second and fourth convex portions 52b1 and 52d1 are formed on the back surfaces of the second and fourth fitting portions 52b and 52d, respectively. The second and fourth convex portions 52 b 1 and 52 d 1 are located on the end side far from the main body portion 51. As shown in FIG. 7, the second fitting portion 52 b is formed so as to be fitted in the second fitting recess 37 b of the case 30. When the second fitting portion 52b is fitted into the second fitting recess 37b, the second protrusion 52b1 of the second fitting portion 52b does not contact the bottom surface of the second fitting recess 37b. The fourth fitting portion 52d is formed so as to be fitted in the fourth fitting recess 37d of the case 30. When the fourth fitting portion 52d is fitted into the fourth fitting recess 37d, the fourth protrusion 52d1 of the fourth fitting portion 52d does not contact the bottom surface of the fourth fitting recess 37d.

  Further, as shown in FIG. 9, a gate mark 52a2 is formed on the front end side of the back surface of the first fitting portion 52a. The gate mark 52a2 is formed at a position facing the gate (not shown) of the injection molding machine when the light guide member 50 is injection molded. The gate mark 52a2 has a rough surface with a rough surface as compared with other portions.

  The light guide member 50 can be fitted to a portion of the case 30 corresponding to the second pointer-type meter 12. Specifically, the first to fourth fitting portions 52a to 52d are fitted to the first to fourth fitting recesses 137a to 137d of the case 30, as shown in FIG. At this time, the 4th convex part 52d1 of the 4th fitting part 52d in the light guide member 50 fits in the through-hole part 137d1 of the 4th fitting recessed part 137d, and the 2nd fitting in the light guide member 50 is carried out. The second convex part 52b1 of the joint part 52b is fitted into the through hole part 137b1 of the second fitting concave part 137b. Thereby, the light guide member 50 is stably attached to the case 30 on the same principle as described above.

  As shown in FIG. 2, the facing member 60 is formed of an opaque resin, and is fixed to the rear cover 20 with the substrate 40, the case 30, the display panel 45, and the liquid crystal display 13 interposed therebetween. Specifically, the facing member 60 includes a facing plate 60 a that partially covers the surface of the display plate 45. The facing plate 60a has an opening edge 60c having a rectangular hole corresponding to the screen of the liquid crystal display 13, and an opening edge 60d having a circular hole corresponding to the first and second pointer-type meters 11, 12. And are formed. As shown in FIG. 3, the facing plate 60a overlaps the main body 51 of the light guide member 50 in the thickness direction, and a part of the inner peripheral side of the main body 51 is the inner periphery of the opening edge 60d. It protrudes to the side. Thereby, the outer periphery of the 1st and 2nd pointer type | mold meters 11 and 12 can be made to shine, as shown in FIG. The opening edge portion 60d of the facing plate 60a corresponds to the facing portion.

(Function)
Next, the action of light inside the light guide member 50 when the light source 26 is turned on will be described.
The light emitted from the light source 26 enters from the front ends of the light incident portions 53a to 53d of the light guide member 50 and then travels toward the main body 51 of the light guide member 50 along the light incident portions 53a to 53d. And the light spreads to the main-body part 51 and each fitting part 52a-52d. At this time, the light wall is formed in an annular shape by the outer peripheral wall 51 o of the main body 51. The wall of light formed by the outer peripheral wall 51o can be viewed by a viewer depending on the viewpoint. At this time, although light is transmitted from the main body 51 to the first to fourth fitting portions 52 a to 52 d, the first to fourth fitting portions 52 a to 52 d are provided on the back surface of the main body portion 51. Therefore, light does not spread from the outer peripheral wall 51 o of the main body 51 to the radially outer side of the main body 51.

(effect)
As mentioned above, according to one Embodiment described, there exist the following effects.

(1) The display device 10 is installed on the case 30, on the front side of the case 30, and has a scale 41 on the surface, and is installed in the case 30 and emits light in a direction toward the display plate 45. Positioned between the light source 26 and the opening edge 60d of the facing plate 60a surrounding the scale 41 of the display plate 45, located on the front side of the display plate 45, and between the facing plate 60a and the display plate 45, the light from the light source 26 is transmitted. And a light guide member 50 that shines along the inner periphery of the opening edge 60d. The light guide member 50 is formed on the main body 51 formed in an annular shape along the inner periphery of the opening edge 60d of the facing plate 60a, and on the back surface of the main body 51 facing the case 30, and penetrates the display plate 45. The first to fourth fitting recesses 37a to 37d and 137a to 137d of the case 30 are provided.
According to this configuration, since the first to fourth fitting parts 52 a to 52 d are formed on the back surface of the main body part 51, when the light guide member 50 is lit, the light is emitted from the light guide member 50. It does not spread outward from the outer peripheral wall 51o through the fitting portions 52a to 52d. Therefore, the designability of the display device 10 when the light guide member 50 is illuminated can be improved.
In addition, since the light is less likely to travel in the thickness direction of the main body 51 as compared with the direction along the main body 51, the light is relatively transmitted from the back surface of the main body 51 to the first to fourth fitting portions 52a to 52d. Difficult to go to. Therefore, the main body 51 can be efficiently illuminated based on the light from the light source 26.

(2) The main body 51 of the light guide member 50 includes an outer peripheral wall 51 o positioned at the outer peripheral end of the main body 51. The first to fourth fitting portions 52 a to 52 d protrude from the back surface of the main body portion 51 beyond the outer peripheral wall 51 o to the outside of the main body portion 51 when viewed from the direction orthogonal to the back surface of the main body portion 51.
According to this structure, since the part which the main-body part 51 and each fitting part 52a-52d connect decreases, the quantity of the light transmitted from the main-body part 51 to each fitting part 52a-52d can be reduced. Therefore, the main body 51 can be efficiently illuminated. Moreover, since each fitting part 52a-52d is provided in the outer peripheral side of the main-body part 51, each fitting part 52a-52d can be provided in the position where a viewer is hard to visually recognize.

  (3) As shown in FIG. 9, the area overlapping the main body 51 in the first to fourth fitting portions 52 a to 52 d when viewed from the direction orthogonal to the back surface of the main body 51 is the first to fourth. It is set smaller than the area which does not overlap with the main body 51 in the fitting parts 52a to 52d. According to this structure, since the part which the main-body part 51 and each fitting part 52a-52d connect decreases, the quantity of the light transmitted from the main-body part 51 to each fitting part 52a-52d can be reduced. . Therefore, the main body 51 can be efficiently illuminated.

  (4) A gate mark 52a2 at the time of injection molding is formed in the first fitting portion 52a of the light guide member 50. According to this configuration, it is possible to reduce a possibility that a viewer visually recognizes a portion where light is irregularly reflected by the gate mark 52a2. Furthermore, by providing the gate mark 52a2 on the distal end side of the first fitting portion 52a, that is, on the downstream side of the light in the light guide member 50, the influence of light on the gate mark 52a2 can be minimized.

  (5) The display device 10 is located on the back side of the case 30 and includes a substrate 40 on which the light source 26 is installed. The light guide member 50 is connected to the main body 51 and faces the light source 26 in the case 30. First to fourth light incident portions 53a to 53d extending in the direction. The 1st-4th fitting parts 52a-52d are provided corresponding to each light-incidence part 53a-53d. Thereby, the position of each light-incident part 53a-53d with respect to each light source 26 can be defined by each fitting part 52a-52d. Therefore, the light from each light source 26 can be efficiently incident into the main body 51 of the light guide member 50 by the light incident portions 53a to 53d.

  (6) As shown in FIG. 7, the through-hole portion 37c1 is formed as a perfect circular hole, but the through-hole portion 37a1 is formed as a long hole. For this reason, even if a shape error occurs in the case 30 and the light guide member 50, the first convex portion 52a1 of the first fitting portion 52a is formed in the through hole portion 37a1 of the first fitting concave portion 37a. The third convex portion 52c1 of the third fitting portion 52c can be fitted into the through hole portion 37c1 of the third fitting concave portion 37c.

(Modification)
In addition, the said embodiment can be implemented with the following forms which changed this suitably.

  In the above-described embodiment, the first to fourth fitting portions 52 a to 52 d protrude from the back surface of the main body 51 beyond the outer peripheral wall 51 o to the outside of the main body 51, but protrude outside the main body 51. It may be formed on the back surface of the main body 51 so that it does not.

  In the above embodiment, the liquid crystal display 13 is provided in the display device 10, but the liquid crystal display 13 may be omitted. Moreover, you may abbreviate | omit any one among the 1st and 2nd pointer type meters 11 and 12. For example, the display device may be composed of a single cylindrical pointer-type meter. The objects displayed by the first and second pointer-type meters 11 and 12 are not limited to the vehicle speed and the engine speed, but may be the remaining gasoline amount, the oil temperature, the oil pressure, the outside air temperature, and the like.

The shape of the light guide member 50 in the above embodiment can be changed as appropriate. For example, in the said embodiment, although the light guide member 50 was provided with the 1st-4th fitting parts 52a-52d, the number of the fitting parts of the light guide member 50 is not limited to this, 1- 4 There may be three or five or more. For example, when the number of the fitting portions is one, the light guide member is fixed to the case by bringing the fitting portions and the fitting concave portions into surface contact.
Moreover, in the said embodiment, although comprised as the light guide member 50 corresponding to both the 1st and 2nd pointer type | mold meters 11 and 12, a different light guide member is employ | adopted for every pointer type | mold meters 11 and 12. FIG. Also good. For example, the light guide member corresponding to the first pointer-type meter 11 may be configured by omitting the second and fourth fitting portions 52b and 52d in the light guide member 50. The light guide member corresponding to the pointer-type meter 12 may be configured by omitting the first and third fitting portions 52 a and 52 c in the light guide member 50.
Further, the shapes of the inner peripheral wall 51 i and the outer peripheral wall 51 o in the main body 51 of the light guide member 50 may be formed in a polygonal shape, an ellipse, or the like when viewed from the thickness direction of the main body portion 51.

  In the said embodiment, the area which overlaps with the main-body part 51 in the 1st-4th fitting parts 52a-52d is set smaller than the area which does not overlap with the main-body part 51 in the 1st-4th fitting parts 52a-52d. However, the area of the first to fourth fitting parts 52a to 52d overlapping the main body part 51 is set to be equal to or larger than the area of the first to fourth fitting parts 52a to 52d not overlapping the main body part 51. May be.

  In the said embodiment, although the 1st-4th fitting parts 52a-52d and the 1st-4th light-incidence parts 53a-53d were arrange | positioned equally at equal angular intervals with respect to the main-body part 51. They may be arranged at different angular intervals.

  In the above embodiment, the light guide member 50 includes the first to fourth light incident portions 53a to 53d, but the first to fourth light incident portions 53a to 53d may be omitted. In this case, the light from the light source 26 is directly applied to the main body 51 of the light guide member 50.

  In the said embodiment, although each light guide cylinder part 36a-36d was formed in the substantially pentagonal cylinder shape, if it is cylindrical, it will not be restricted to this shape, For example, you may form in a cylindrical shape.

In the said embodiment, although the 1st-4th convex parts 52a1-52d1 were formed in the back surface of the 1st-4th fitting parts 52a-52d, it replaces with this and a fitting recessed part is used. It may be formed. In this case, instead of the through-hole portions 37a1, 37c1, 137b1, and 137d1 of the case 30, a convex portion that fits into the fitting concave portion is provided.
Moreover, the shape of each fitting part can also be changed suitably. In accordance with the shape change of the light guide member 50, the shapes of the first to fourth fitting recesses 37a to 37d of the case 30 are also changed.

  In the above embodiment, the gate mark 52a2 is formed on the front surface of the first fitting part 52a. However, the position of the gate mark 52a2 is any position as long as it is the first fitting part 52a. May be. For example, the gate mark 52a2 may be formed on the back surface on the distal end side of the first fitting portion 52a, and the gate mark 52a2 may be formed on the center portion or the proximal end side of the first fitting portion 52a. Good. Further, the gate mark 52a2 may be formed in the other fitting portions 52b to 52d. Further, the gate mark 52a2 may be formed on the light guide member 50 other than the first to fourth fitting portions 52a to 52d.

  The configurations of the inner cylindrical portion 31, the inclined portion 32, the parallel portion 33, the inclined portion 34, and the outer cylindrical portion 35 in the case 30 of the above embodiment can be appropriately modified and omitted.

  In the above embodiment, the display device 10 is mounted on a vehicle, but may be mounted on a vehicle such as a ship or an airplane, or may be mounted on a general device other than the vehicle. .

DESCRIPTION OF SYMBOLS 10 ... Display apparatus 11 ... 1st pointer type meter 12 ... 2nd pointer type meter 13 ... Liquid crystal display 15 ... Pointer 16 ... Pointer 17 ... Pointer cap 18 ... Boss part 19 ... Pointer seat 20 ... Rear cover 22 ... Pointer drive unit 22a ... rotating shafts 24-26 ... light source 30 ... cases 36a-36d, 136a-136d ... first to fourth light guide tube portions 37a-37d, 137a-137d ... first to fourth fittings Recesses 37a1, 37c1, 137b1, 137d1 ... through hole 40 ... substrate 45 ... display plate 50 ... light guide member 51 ... main body 51o ... outer peripheral wall 51i ... inner peripheral walls 52a-52d ... first to fourth fitting parts 52a1 ˜52d1... 1st to 4th convex portion 52a2... Gate traces 53a to 53d... 1st to 4th light incident portion 60 .. turning member 60a .. turning plate 60c, 60d.

Claims (6)

Case and
A display board installed on the front side of the case and provided with a design;
A light source that is installed in the case and emits light in a direction toward the display board;
Located on the front side of the display plate, and a turn portion surrounding the design of the display plate,
A light guide member that is positioned between the facing portion and the display plate and shines along the inner periphery of the facing portion by guiding light from the light source;
The light guide member is
A body portion formed in an annular shape along the inner periphery of the facing portion;
A fitting portion that is formed on the back surface of the main body portion facing the case and that fits the case through the display plate;
A display device characterized by that. The main body of the light guide member includes an outer peripheral wall located at an outer peripheral end of the main body,
The fitting portion projects from the back surface of the main body portion to the outside of the main body portion over the outer peripheral wall as viewed from the direction orthogonal to the back surface of the main body portion.
The display device according to claim 1. As viewed from the direction orthogonal to the back surface of the main body, the area of the fitting portion that overlaps the main body is set to be smaller than the area of the fitting that does not overlap the main body.
The display device according to claim 2. In the fitting portion, a gate mark at the time of injection molding is formed,
The display device according to claim 1, wherein the display device is a display device. The display device is provided on a back side of the case, and includes a substrate on which the light source is installed.
The light guide member includes a plurality of light incident portions connected to the main body portion and extending toward the light source in the case,
The fitting portion is provided corresponding to each light incident portion,
The display device according to claim 1, wherein the display device is a display device. Case and
A display board installed on the front side of the case and provided with a design;
A light source that is installed in the case and emits light in a direction toward the display board;
Positioned between the facing portion and the display plate, which is used in a display device provided with a facing portion surrounding the design of the display plate, located on the front side of the display plate, and guiding light from the light source A light guide member that shines along the inner periphery of the facing portion,
A body portion formed in an annular shape along the inner periphery of the facing portion;
A fitting portion that is formed on the back surface of the main body portion facing the case and that fits the case through the display plate;
A light guide member.

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