JP2012154798A - Pointer member, pointer unit, and pointer instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compact pointer member capable of fully brightening the entire upper surface of a pointer part, to provide a pointer unit having the pointer member thereof, and to provide a pointer instrument having the pointer unit thereof.SOLUTION: A pointer body 31 is made of a translucent material having a base part 40 and an indication part 50 extended from an upper end 41a of the base part 40 to an indication direction S1 and includes a light receiving part 42 which receives light of a light source, and which is formed in a shape of a lens condensing the received light and provided at the base part 40, and a reflection surface 65 which is formed so that light condensed by the light receiving part 42 is reflected in the direction of a tip 51 of the indication part 50.

Description

  The present invention relates to a pointer member made of a light-transmitting material that receives light from a light source, a pointer unit having the pointer member, and a pointer instrument having the pointer unit.

  In general, a vehicle is equipped with a vehicle display device that displays measurement values such as a vehicle speed and an engine speed, and in many vehicles, the vehicle display device includes a pointer instrument. The pointer instrument is equipped with a dial with a scale and indicators such as numbers, letters or symbols on the surface, a pointer unit that is placed on the front side of the dial and points to the indicator on the dial, and a pointer unit The meter case includes a driving device that rotates the pointer shaft according to the measurement amount, and a wiring board on which a circuit pattern, electronic components, and the like are provided and the driving device is fixed.

    And in order to make it easy to see the pointer unit provided in such a pointer instrument even in the dark, the pointer member constituting the pointer unit is formed of a light-transmitting synthetic resin as a light-transmitting material. Various techniques for guiding the light from the light source into the member to make the pointer member shine are disclosed (for example, Patent Document 1).

  For example, a pointer instrument 901, a part of which is shown in FIG. 10, includes a dial plate 902, a self-emitting pointer 903 as a pointer unit, a driving device 904, a wiring board 905, and a light source 906. The self-light emitting pointer 903 includes, for example, a pointer main body 931 as a pointer member having a base portion 940 and an instruction portion 950 integrally formed of a translucent synthetic resin such as polycarbonate, and covers the pointer main body 931 and the pointer main body 931. And a cover member 932 that exposes the upper surface 953 of the instruction unit 950.

  The base 940 of the pointer main body 931 includes a cylindrical base main body 941 attached to the tip of the pointer shaft 914 that also serves as a light guide member, and the light L of the light source 906 guided along the axis P inside the pointer shaft 914. A light receiving portion 942 for receiving light. The light receiving portion 942 is formed inside the upper end 941 a of the base main body 941 in a circular plane shape having the same diameter as the inner diameter and orthogonal to the axis P. The pointing portion 950 of the pointer main body 931 extends from the base portion 940 in the pointing direction S1 intersecting the axis P of the pointer shaft 914, and a reflecting surface 965 is provided at the end of the pointing portion 950 near the base portion 940. Is provided.

  The reflecting surface 965 is formed in a curved surface that is convexly curved outwardly of the pointing portion 950, and one end 965a near the lower side thereof is disposed in the vicinity of the upper end 941a of the base body 941, and the pointing direction S1 extends from the one end 965a. The guide shaft 914 is provided so as to be inclined with respect to the axis P of the pointer shaft 914 so as to gradually move away from the base 940 in the direction of the axis P (upward in FIG. 10). Therefore, when the light L received by the light receiving unit 942 is incident on the reflecting surface 965, the light L is reflected in the direction of the tip 951 (that is, the pointing direction S1) from the reflecting surface 965 toward the tip 951 of the pointing unit 950. . Then, the reflected light L1 travels through the instruction unit 950 and is emitted from the upper surface 953 of the instruction unit 950, so that the upper surface 953 emits light.

  In addition, in order to sufficiently shine the entire upper surface 953 of the pointing unit 950 from the end near the base 940 to the tip 951, light transmission (light leakage) on the reflection surface 965 is reduced and more It is necessary to reflect light toward the tip 951. Therefore, as shown in FIG. 11, the incident angle α of the light L to the reflecting surface 965 is an angle that satisfies the total reflection condition (for example, an angle of about 39.4 degrees or more in the case of polycarbonate). The reflecting surface 965 is formed so as to be inclined with respect to the axis P of the pointer shaft 914 so that α is increased.

Japanese Utility Model Publication No. 6-12995

  However, when the incident angle α of the light L to the reflecting surface 965 is increased, the inclination angle β (α + β = 90 degrees) of the reflecting surface 965 with respect to the axis P of the pointer shaft 914 is decreased, and the reflecting surface 965 is separated from the base 940. Standing up (approaching parallel to the axis P), the height h ′ of the indicator 950 (that is, the length of the indicator 914 in the direction of the axis P) increases, and the pointer member 931 increases. There was a problem.

  The present invention aims to solve the above problems. That is, an object of the present invention is to provide a small pointer member that can sufficiently shine the entire upper surface of the pointing section, a pointer unit having the pointer member, and a pointer instrument having the pointer unit.

  In order to achieve the above object, the invention described in claim 1 is a pointer member made of a translucent material having a base and an indicator extending in one direction from one end of the base. A light receiving portion provided on the base, which is formed in a lens shape for receiving and collecting the received light, and formed so as to reflect the light collected by the light receiving portion toward the distal end of the pointing portion And a reflecting member.

  According to a second aspect of the present invention, in the first aspect of the present invention, the cross-sectional shape of the light receiving unit along the tip direction of the pointing unit is formed in a convex curved shape on the light source side. It is characterized by.

  In order to achieve the above-mentioned object, the invention described in claim 3 covers the pointer member according to claim 1 or 2 and the pointing portion of the pointer member and is directed to the side opposite to the base side. And a cover member provided with a slit through which light from the upper surface of the indication unit passes.

  In order to achieve the above object, a fourth aspect of the present invention is directed to the pointer unit according to the third aspect, and a driving device that rotates the pointer shaft to which the pointer unit is attached in accordance with the measured amount. And a light source that emits light received by the pointer member of the pointer unit.

  According to the present invention, a light receiving portion that is formed in a lens shape that receives light from a light source and condenses the received light and that is provided at the base of the pointer member, and light that is collected by the light receiving portion is indicated by the pointer member. The reflecting surface is formed so as to reflect in the direction of the tip of the indicator portion, so that the area where the light of the light source that has passed through the light receiving portion is incident on the reflecting surface can be reduced. The height of the portion can be reduced, the amount of light reflected in the direction of the tip of the pointing portion can be secured, and the entire upper surface of the pointing portion can be sufficiently brilliant and miniaturized.

  In addition, the cross-sectional shape along the tip direction of the light receiving unit (that is, the pointing direction and also the longitudinal direction of the pointing unit) is formed in a convex curved shape on the light source side, so that the light receiving unit has a simple convex lens shape. Therefore, the pointer member can be manufactured easily and inexpensively.

It is sectional drawing of the display apparatus for vehicles which is one Embodiment of the pointer instrument of this invention. FIG. 2 is an exploded three-dimensional view of a self-luminous pointer (pointer unit) included in the vehicle display device of FIG. (A) is the fragmentary perspective view which looked at the pointer main body of the self-light-emitting pointer of FIG. 2 from the diagonal direction, (b) is the fragmentary sectional view which follows instruction | indication direction S1 of (a). It is a figure which shows the structure of the modification of the light-receiving part provided in the base of the pointer main body of FIG. It is a figure which shows typically the light which advances the inside of the instruction | indication part of the pointer main body of FIG. It is a figure which shows typically the light which advances the light-receiving part and reflective surface vicinity of the pointer main body of FIG. It is a figure explaining that the magnitude | size of the area | region where the light received by the light-receiving surface in a reflective surface injects changes with the shape of a light-receiving surface. It is a figure which shows the structure of the modification of the pointer main body of FIG. It is a fragmentary sectional view which shows the structure of the modification of the self-light-emitting pointer | guide of FIG. It is a figure which shows the structure of the conventional pointer instrument and a self-light-emitting pointer. It is a figure which shows typically the light which advances the inside of the instruction | indication part of the pointer main body of the self-light-emitting pointer of FIG.

  Hereinafter, a display device for a vehicle which is an embodiment of a pointer instrument according to the present invention will be described with reference to FIGS.

  In FIG. 1, a vehicle display device 1 is a speed meter that displays a vehicle speed, for example, and is a character provided with a scale and an index such as a number, a character, or a symbol on a surface 2 a (a surface visually recognized by a viewer). A driving device 4 having a plate 2, a self-luminous pointer (hereinafter also referred to as a pointer) 3 as a pointer unit disposed on the surface 2 a of the dial 2, and a pointer shaft 14 to which the pointer 3 is attached at the tip; A circuit board 5 provided with a circuit pattern, electronic parts, and the like and a driving device 4 fixed, a plurality of light sources 6 provided on the circuit board 5, and from the center of the circuit board 5 toward the edge of the dial 2. The case 7 having the tapered portion 7 a formed as described above, the back cover 8 covering the back side of the wiring board 5, and the front glass 9 are provided.

  The dial plate 2 is a member formed in a substantially disc shape made of, for example, a transparent or translucent synthetic resin such as polycarbonate. A light-shielding ink (not shown) is printed on the surface 2a of the dial plate 2 respectively. In addition, a light-shielding region and an indicator as a translucent design formed by removing the light-shielding ink along the shape of characters, scales, etc. (without printing the light-shielding ink) are provided. Each index is visually recognized by being illuminated from the back side of the dial 2 by a light source 6 described later.

  The pointer 3 is arranged on the surface 2a side of the dial plate 2, and indicates the measurement amount in cooperation with each of the indicators by indicating each indicator provided on the dial plate 2. As shown in FIG. 2, the pointer 3 is provided in the cover member 32 to balance the pointer 3 by providing a pointer main body 31 as a pointer member, a cover member 32 made of an opaque synthetic resin covering the pointer main body 31. And a balance member 39 to be adjusted.

  As shown in FIGS. 3A and 3B, the pointer main body 31 is integrally formed with a base portion 40 using a light-transmitting synthetic resin as a light-transmitting material such as polycarbonate resin or acrylic resin. And an instruction unit 50.

  The base 40 includes a cylindrical base main body 41 and a light receiving portion 42 provided in the vicinity of the upper end 41 a inside the base main body 41. The base body 41 is fixedly attached to the pointer shaft 14 coaxially by inserting and fitting the tip of the pointer shaft 14 to the lower end 41b. That is, the center of the base body 41 coincides with the axis P of the pointer shaft 14.

  The light receiving portion 42 has the same diameter as the inside of the base main body 41 and is formed in a hemispherical shape that is convex toward the pointer shaft 14, that is, a convex lens shape. Therefore, the cross-sectional shape of the light receiving portion 42 along the direction 51 of the tip 51 (that is, the indication direction S1) to be described later is formed in a curved shape that is convex toward the pointer shaft 14 side. The light receiving unit 42 has the same traveling direction of the light that has passed through the light receiving unit 42 as the received light, and the irradiation area of the light that has passed through the light receiving unit 42 is smaller than when the light receiving unit 42 has a planar shape. To do. When the pointer shaft 14 is fitted to the base body 41, the light receiving portion 42 faces the end surface 14a at the tip of the pointer shaft 14 with a gap. Thus, the light receiving unit 42 receives the light L traveling along the axis P in the pointer shaft 14 that is a light guide member. Of course, the light receiving portion 42 and the end surface 14a of the pointer shaft 14 may be disposed so as to contact each other.

  In addition to the hemispherical shape convex toward the pointer shaft 14 as described above, for example, as shown in FIG. 4, the shape of the light receiving portion 42 is flatly cut off at the top of the hemispherical shape convex toward the pointer shaft 14 side. In the width direction of the indicator portion 50 (front-back direction in FIG. 3B) so that the cross-sectional shape along the tip 51 direction of the indicator portion 50 is a convex curve toward the pointer shaft 14 side. A shape that collects received light, such as a semi-cylindrical shape (kamaboko shape) with parallel axes, a Fresnel lens shape, a lens array shape, a flat surface, a curved surface, or a combination of these, that is, the received light The shape of the light receiving part 42 is arbitrary as long as the width of the tip direction (instruction direction S1) is narrowed and incident on the reflecting surface 65.

  The instruction unit 50 is connected to the upper end 41a (that is, one end of the base unit 40) of the base body 41, and is in one direction (that is, the instruction direction) that intersects the axis P at a right angle or a substantially right angle from the upper end 41a. S1) is extended and formed. The instruction direction S1 coincides with or substantially coincides with the radial direction of the pointer shaft 14.

  The bottom surface 54, which is the surface of the pointing unit 50 directed toward the base 40, is formed by being colored white or silver by a hot stamp or the like so as to reflect the light incident on the bottom surface 54 from within the pointing unit 50. The reflective layer 54a is provided so as to overlap. In addition, a diffusion layer 53a is formed on the upper surface 53, which is the surface of the pointing unit 50 opposite to the bottom surface 54, by being colored red or the like with a hot stamp or the like so as to diffuse light emitted from the upper surface 53. Overlaid. In addition, the reflection layer 54 a and the diffusion layer 53 a may be formed by forming a texture or a fine prism structure on the bottom surface 54 and the top surface 53. In the present embodiment, the reflective layer 54a is provided only on the bottom surface 54 on the indication unit 51 side. However, a similar reflective layer 54a may be provided on the bottom surface 54 on the rear portion 51 side. In the following description, the description “bottom surface 54” represents the surface on the base 40 side of the indicator 50 including the reflective layer 54a, and the description “top surface 53” refers to the diffusion layer opposite to the bottom surface 54. It represents the surface of the indicator 50 including 53a, and the bottom surface 54 and the reflective layer 54a, and the top surface 53 and the diffusion layer 53a will be described separately only when necessary. Note that the reflective layer 54a and the diffusion layer 53a may be provided with only one of them. In addition, a reflecting surface 65 is provided at an end portion near the base portion 40 opposite to the tip 51 of the instruction portion 50.

  The reflecting surface 65 is provided in the vicinity of the upper end 41 a of the base main body 41 in the instruction unit 50. The reflecting surface 65 has a lower end 65a in the drawing disposed near the upper end 41a of the base body 41, and the direction of the pointer shaft 14 from the one end 65a toward the pointing direction S1 (left direction in FIG. 3B). It is inclined so as to gradually move upward along the axis P (upward in FIG. 3B), and is formed in a curved surface shape that is convex and gently curved outward of the indicator 50. That is, the reflecting surface 65 is provided to be inclined with respect to the axis P of the pointer shaft 14. The other end 65 b of the reflection surface 65 is connected to the upper surface 53 of the instruction unit 50. Thereby, when the light L received by the light receiving unit 42 is incident, the reflecting surface 65 reflects the light L toward the tip 51 of the pointing unit 50.

  In addition, the reflection surface 65 has an inclination angle β (α + β = 90 degrees) with respect to the axis P so that the incident angle α of the light L received by the light receiving unit 42 satisfies the total reflection condition. The incident angle α satisfying the total reflection condition is, for example, an angle of about 39.4 degrees or more in the case of general polycarbonate. Thereby, the light L received by the light receiving unit 42 is totally reflected toward the tip 51 without passing through the reflecting surface 65. The incident angle α is an incident angle at a portion of the reflecting surface 65 that intersects the axis P of the pointer shaft 14.

  The pointer main body 31 reflects the light received by the light receiving unit 42 of the base 40 by the reflecting surface 65 and guides the light within the indicating unit 50 to emit light from the upper surface 53 of the indicating unit 50. Thereby, the upper surface 53 of the instruction unit 50 emits light, and the upper surface 53 is visually recognized through the slit 71 of the cover member 32.

  As shown in FIG. 2, the cover member 32 has an upper cover 33 and a lower cover 38 that are divided into upper and lower parts.

  The upper cover 33 includes a first cover portion 34 formed in a substantially rectangular tube shape gradually narrowing from the rear end 34b toward the front end 34a in accordance with the outer shape of the instruction portion 50 of the pointer main body 31, and a base portion of the pointer main body 31. And a second cover part 35 formed in a circular dish shape covering the periphery of 40. The 1st cover part 34 and the 2nd cover part 35 are opened toward the downward direction in the figure, and the instruction | indication part 50 of the said pointer main body 31 is accommodated inside from this opening.

  The upper wall 34c of the first cover part 34 is provided with a slit 71 extending from the rear end 34b to the front end 34a. The slit 71 is formed so that when the pointer main body 31 and the cover member 32 are assembled, the upper surface 53 of the indicating portion 50 of the pointer main body 31 is exposed in a straight line over the entire length in the longitudinal direction. The length and width of the slit 71 can be arbitrarily designed according to the design of the pointer 3 and the like. In addition, a translucent coloring member or a light diffusing member may be provided in the slit 71, and the slit 71 only needs to be configured so that light emitted from the upper surface 53 of the indication unit 50 passes therethrough. In addition, a pair of bosses (not shown) are formed on the inner surface of the second cover portion 35 so as to protrude downward in the figure and fit into the pair of fitting holes 38d of the lower cover 38. .

  The lower cover 38 includes an annular plate-shaped first lid portion 38 a formed in accordance with the opening shape of the second cover portion 35 of the upper cover 33, and the first cover portion 34 of the upper cover 33 that accommodates the instruction portion 50. A band-shaped second lid portion 38b extending in the radial direction from the first lid portion 38a, and a base portion 40 of the pointer main body 31 provided on the first lid portion 38a. A pair of fitting holes 38d provided in the first lid 38a corresponding to the pair of bosses of the upper cover 33, and a mounting boss 38e to which the balance member 39 is attached. Have. The lower cover 38 is assembled to the upper cover 33 so as to close the openings of the first cover part 34 and the second cover part 35, and forms a space for accommodating the instruction part 50 of the pointer main body 31 together with the upper cover 33. And by accommodating the instruction | indication part 50 of the pointer main body 31 in this accommodation space, it can prevent that the light emitted from surfaces, such as the bottom face 54 of the instruction | indication part 50, illuminates the dial 2 grade | etc.,.

  The balance member 39 is formed with a weight set in consideration of the instruction portion 50 of the pointer main body 31, and has a fitting hole 39 a fitted into a mounting boss 38 e provided on the lower cover 38 of the cover member 32. Have. The balance member 39 is positioned by the mounting boss 38e and is accommodated in the cover member 32.

  The pointer 3 configured in this manner is assembled as follows, for example. First, the base 40 of the pointer main body 31 is passed through the through portion 38 c of the lower cover 38, the pointer main body 31 is set on the lower cover 38, and the balance member 39 is set on the lower cover 38. Then, the upper cover 33 is covered so as to cover the pointer main body 31 from the upper surface 53 side of the indicator section 50 of the pointer main body 31, and a pair of bosses and a lower cover 38 provided in the second cover of the upper cover 33 are covered. By fitting the pair of fitting holes 38d, the upper cover 33 and the lower cover 38 are fixed to each other, the pointer main body 31 is accommodated in the cover member 32, and the assembly is completed.

  The driving device 4 is a well-known stepping motor, and supports a pointer shaft 14 formed in a substantially cylindrical shape with a light-transmitting synthetic resin such as polycarbonate resin, and the pointer shaft 14 so as to be rotatable. A main body 15 that rotates the pointer shaft 14 according to the principle of a stepping motor in accordance with a speed measurement amount by a speed sensor that does not. A concave portion 15b is provided in a bottom surface 15a of a main body portion 15 disposed so as to overlap with a wiring board 5 described later, and an end surface 14b on the lower side of the pointer shaft 14 in the figure is exposed in the concave portion 15b. The base portion 40 of the pointer main body 31 described above is attached to the tip of the pointer shaft 14 at the upper side in the drawing. The pointer shaft 14 is configured to turn the pointer main body 31 and guide light to the base 40 as a light guide member.

  The wiring board 5 is a well-known printed circuit board provided with electronic components and wiring patterns for electrically connecting these electronic components. A driving device 4 and a plurality of light sources 6 are mounted on the surface of the wiring board 5 on the dial 2 side.

  The plurality of light sources 6 use LEDs, bulbs, and the like, and are controlled to be turned on and off by a control unit (not shown) provided on the wiring board 5. The plurality of light sources 6 emit light for causing the indicator of the dial 2 and the pointer main body 31 of the pointer 3 to emit light. One of the plurality of light sources 6 is disposed in the recess 15 b of the main body 15 of the driving device 4 so as to be opposed to the end surface 14 b of the pointer shaft 14. Thereby, the pointer shaft 14 guides the light incident on the end surface 14b from the light source 6 and emits the light from the end surface 14a at the tip.

  In the case 7, the tapered surface that is the surface of the tapered portion 7 a is a reflecting surface, and reflects the light emitted from the light source 6 toward the dial 2. Thereby, each index provided on the surface 2a of the dial 2 emits light. The back cover 8 is assembled to the case 7 so as to cover the back of the wiring board 5. The front glass 9 is disposed so as to cover the dial 2, the pointer 3 and the like, and is attached to the case 7 via a turn 10 by fixing means (not shown) such as a locking claw. The back cover 8 and the front glass 9 prevent dust and the like from entering the vehicle display device 1.

  Next, an example of the operation (action) of the pointer main body 31 according to the present invention having the above-described configuration will be described with reference to FIGS. In each figure, the arrow described in the pointer main body 31 schematically shows the traveling direction of the light guided to the pointer main body 31.

  In the present embodiment, the base 40 of the pointer main body 31 is provided with a light receiving portion 42 having a hemispherical shape, and the indicator 50 of the pointer main body 31 receives the light L received by the light receiver 42 from the indicator 50. A reflection surface 65 that reflects toward the tip 51 is provided. The incident angle α of the light L on the reflecting surface 65 is set to an angle that satisfies the total reflection condition.

  As shown in FIGS. 5 and 6, when the light L of the light source 6 guided to the pointer shaft 14 is received by the light receiving unit 42, the light L passes through the light receiving unit 42 and enters the reflecting surface 65. , Reflected toward the tip 51 of the indicator 50.

  7 shows a region R1 (shown by a solid line in the figure) on the reflecting surface 65 on which the light L received by the light receiving surface 42 formed in a convex hemispherical shape on the pointer shaft 14 side, and the pointer shaft 14 The respective sizes of the region R1 ′ (represented by a dotted line in the drawing) on the reflection surface 65 on which the light L received by the light receiving surface 42 ′ formed in a planar shape orthogonal to the surface is incident are schematically shown. .

  As shown in FIG. 7, when the light receiving part 42 ′ (indicated by a dotted line in the figure) is formed in a planar shape perpendicular to the pointer shaft 14, the light L is received and received by the light receiving part 42 ′. Since the region R1 ′ is enlarged and the reflection surface 65 is also enlarged, if the upper surface 53 ′ (indicated by the dotted line in the figure) of the pointing unit 50 is formed so as to be continuous with the upper end of the region R1 ′. The height of the instruction unit 50 is h ′. On the other hand, when the light receiving part 42 is formed in a hemispherical shape convex toward the pointer shaft 14 side, the light L is condensed in the direction of the tip 51 and the irradiation range becomes small, so the region R1 is small. Accordingly, the reflecting surface 65 is also reduced. Therefore, when the upper surface 53 of the indicating unit 50 is formed so as to be continuous with the upper end of the region R1, the height of the indicating unit 50 becomes h lower than the height h ′.

  As described above, according to the present invention, the light receiving portion 42 that is formed in the lens shape that receives the light of the light source 6 and collects the received light L and is provided on the base 40 of the pointer main body 31, and the light receiving portion 42. And the reflecting surface 65 formed so as to reflect the light L collected in the direction of the tip 51 of the pointing unit 50 of the pointer main body 31, so that the light L of the light source 6 that has passed through the light receiving unit 42. The area R1 incident on the reflecting surface 65 can be reduced, so that the height h of the indicating unit 50 can be reduced, and the amount of light reflected in the direction of the tip 51 of the indicating unit 50 is ensured to ensure the upper surface of the indicating unit 50. The entire 53 can be sufficiently brilliant and the pointer main body 31 can be reduced in size.

  In addition, the cross-sectional shape along the tip 51 direction of the light receiving unit 42 (that is, the indication direction S1 and also the longitudinal direction of the indication unit 50) is formed in a convex curve shape on the pointer shaft 14 side (ie, the light source 6 side). Therefore, the light receiving portion 42 has a simple convex lens shape, and therefore, the pointer main body 31 can be easily and inexpensively manufactured.

  In the present embodiment, an expression indicating directions such as upper, lower, left, right, front, rear, etc. used for explaining the configuration and operation of each part of the display device 1 for the vehicle, the self-light emitting pointer 3 and the pointer main body 31. Is relative rather than absolute, and is appropriate when the vehicle display device 1, the self-luminous pointer 3 and the pointer body 31 or parts thereof are in the posture shown in the figure. Should change and be interpreted according to the change in posture.

  In the present embodiment, the shape of the reflecting surface 65 is not limited to the above-described configuration, and may be a flat surface, a curved surface, an aspherical surface, a composite surface thereof, or a plurality of surfaces. As long as the object of the present invention is not violated, the shape is arbitrary.

  Further, in the present embodiment, the instruction unit 50 of the pointer main body 31 is extended only in the instruction direction S1, but the present invention is not limited to this. For example, the pointer main body 31A of the pointer instrument 1A shown in FIG. 8 extends from the upper end 41a of the base 40 in one direction (ie, the pointing direction S1) that intersects the axis P of the pointer shaft 14 at right angles (substantially at right angles). A pointing portion 50A including a pointing portion 50a and a rear portion 50b extending in a direction opposite to the one direction (that is, the rear end direction S2) shorter than the pointing portion 50a. In the pointer portion 50A near the upper end 41a of the base portion 40, the light received by the light receiving portion 42 formed in a substantially triangular shape including the pointing direction reflecting surface 61, the rear end direction reflecting surface 62, and the ceiling surface 63 is received. A hollow reflecting portion 60 is provided that reflects in the pointing direction S1 (that is, the leading end direction of the pointing portion 50a) and the rear end direction S2. As described above, the pointer main body is provided with a light receiving unit provided to collect the received light, and a reflective surface (reflecting surface 65, reflecting the light collected by the light receiving unit toward the tip of the pointing unit. The pointer main body has an arbitrary configuration as long as it does not contradict the object of the present invention.

  In addition, the shape of the hollow reflective portion 60 is not limited to the above-described configuration, for example, the hollow reflective portion is a planar pointing direction reflective surface, a planar rear end direction reflective surface, and The pointing direction reflecting surface, the rear end direction reflecting surface, and the like, which is a fan-shaped formed of a curved transmission surface that protrudes and curves toward the upper surface side of the pointer part, or a polygonal shape other than a triangle, and As long as it has a transmission surface and is formed in a hollow shape in the pointer portion, these shapes are arbitrary as long as the object of the present invention is not violated. Further, the shapes of the indication direction reflection surface 61, the rear end direction reflection surface 62, and the transmission surface 63 are not limited to the above-described configuration, and each of these surfaces may be a flat surface, a curved surface, an aspheric surface, or a composite surface thereof. Or it may be comprised by several surfaces, and the shape is arbitrary unless it is contrary to the objective of this invention.

  In the present embodiment, the base 40 includes a base body 41 attached to the pointer shaft 14 and a light receiving portion 42 that receives the light of the light source 6 guided to the pointer shaft 14. However, the present invention is not limited to this. For example, as shown in FIG. 9, the lower cover 38 is provided with a cylindrical bearing portion 38f attached to the pointer shaft 14 in place of the base main body 41, and the base 40 of the pointer main body 31 is formed only by the light receiving portion 42. As long as the base portion of the pointer main body (pointer member) includes at least a light receiving portion that receives light from the light source, the configuration thereof is arbitrary.

  In the present embodiment, the display device for a vehicle as a speed meter has been described. However, the present invention is not limited to this. For example, the present invention is applied to an engine tachometer, a fuel gauge, and the like in addition to the speed meter. Or may be used for industrial instrument devices other than display devices for vehicles such as instruments used for measuring gas pressure, temperature, etc. in factories, etc. Uses and application devices are arbitrary.

  In addition, embodiment mentioned above only showed the typical form of this invention, and this invention is not limited to embodiment. That is, various modifications can be made without departing from the scope of the present invention.

1, 1A Vehicle display device (pointer meter)
3 Self-luminous pointer (pointer unit)
4 Driving device 6 Light source 14 Pointer shaft 31, 31A Pointer body (pointer member)
32 Cover member 40 Base 41 Base body 41a Upper end of base body (one end of base)
42 Light Receiving Unit 50 Pointing Unit 51 Pointer of Pointing Unit 53 Upper Surface of Pointing Unit 54 Bottom Surface of Pointing Unit 60 Hollow Reflecting Unit 61 Pointing Direction Reflecting Surface (Reflective Surface)
65 Reflective surface S1 Pointing direction (tip direction of pointing part)
S2 Rear end direction h Height of indicator

Claims (4)

In a pointer member made of a translucent material having a base and an indicator extending in an indication direction from one end of the base,
A light receiving portion formed in the shape of a lens for receiving the light of the light source and condensing the received light; and
And a reflecting surface formed so as to reflect the light collected by the light receiving portion toward the tip of the pointing portion.   2. The pointer member according to claim 1, wherein a cross-sectional shape of the light receiving unit along a tip direction of the indication unit is formed in a curved shape convex toward the light source.   The pointer member according to claim 1 or 2, and a cover member provided with a slit that covers the indication portion of the pointer member and that allows light from the upper surface of the indication portion that is directed to the side opposite to the base side to pass therethrough. A pointer unit characterized by comprising:   4. The pointer unit according to claim 3, a drive device that rotates a pointer shaft to which the pointer unit is attached according to a measurement amount, and a light source that emits light received by a pointer member of the pointer unit. A pointer instrument characterized by that.

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