JP2007121177A - Indicating instrument - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a novel indicating instrument capable of annularly lighting and displaying part of a surface part of a display plate positioned in an outline part of a pointer cap, and improving the appearance. <P>SOLUTION: A light guide 11 of pointer lighting comprises a light receiving section 11A for receiving a radiation light beam from a light source 7 for guide lighting, an emitting section 11B for emitting and guiding the light beam guided into the light guide 11 with the light receiving section 11A to a pointer base 3B of a light emitting pointer 3, and a reflecting section 11C for guiding the light beam guided into the light guide 11 with the light receiving section 11A to the surface part of the display plate 5. Light is guided from the pointer base 3B to an indicating section 3A of the light emitting pointer 3 and is grown, a part of the radiation light beam from a light source 7 is guided to the surface part of the display plate 5 via the reflecting section 11C, the surface part of the display plate 5 positioned at the rim of the pointer base 3B is brightly lighted, the outside thereof can be more darkly lightened and displayed, novel lighting effect with good appearance can be expected. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

    The present invention relates to an indicating instrument that is mounted on, for example, a special vehicle such as a construction machine, a ship, an automobile, a motorcycle, or the like, and displays and illuminates a display board and a pointer with a light beam emitted from a light source.

  Conventionally, as an indicator for automobiles, etc., an indicator that illuminates and displays a display board and pointers with light rays emitted from a light source. An indicating instrument of a light emission pointer type that performs illumination (light emission illumination) is known.

  As shown in FIG. 7 and FIG. 8, as a general configuration of the indicating instrument that illuminates and displays the pointer, a light emitting pointer 3 that is fixed to the distal end side of the rotating shaft 2 of the instrument body 1 and rotates around the rotating shaft 2. And a display board 5 on the back side of the light emitting pointer 3 and provided with an indicator portion 4 composed of scales, numbers, symbols and the like that are transmitted and illuminated, and a hard circuit board located on the back side of the display board 5 6, light emitting diodes 7 and 8 which are provided on the circuit board 6 and illuminate the light emitting pointer 3 and the display plate 5, respectively, and the light emitting diode 7 and the display plate 5 side for illuminating the light emitting pointer 3. The light-emitting diode 8 side for illumination is divided into areas to be illuminated by a housing 9 made of a synthetic resin frame that divides an illumination area, and a cylindrical partition wall 9A provided in the housing 9, respectively. It is composed.

  The indicator 3A and the pointer base 3B fixed to the rotary shaft 2 are integrally formed of a transparent synthetic resin, and the pointer base 3B is covered with a pointer cap 10 made of a light-shielding synthetic resin. . The instruction section 3A emits light upon receiving light from the light emitting diode 7.

  The display board 5 is composed of a flat substrate made of a transparent synthetic resin, and a white translucent display layer 4A, for example, is provided on the surface (upper surface in the figure) at four index portions such as scales, numbers, or symbols. A light-shielding black ground color layer (light-shielding layer) 4B is formed on the entire surface of the display panel 5 except for the four indicator portions.

  A plurality of light emitting diodes 7 for emitting the pointer are located inside the cylindrical partition wall 9 </ b> A and are provided around the rotating shaft 2 in a circular shape around the rotating shaft 2. Is disposed inside the cylindrical partition wall 9A. A plurality of light emitting diodes 8 that transmit and illuminate the indicator portion 4 of the display board 5 are provided around the outside of the cylindrical partition wall 9 </ b> A in a circular shape, and the irradiation light from the light emitting diode 8 is used as the indicator portion of the display board 5. A light guide 12 for guiding to the side 4 is disposed, and the light guide 12 is supported by a light case 9B formed integrally with the housing 9 made of the frame.

  With this configuration, in the conventional indicating instrument, characters, numbers, scales, symbols, or the like that are the indicator portions 4 on the front surface side of the display board 5 are transmitted and illuminated by the light source (light emitting diode 8) from the back side. Although not shown, letters, numbers, scales, symbols, etc., which are indicator parts, and the entire surface of the display board, which is the background part of the display board, are directly illuminated by a light source provided on the front side of the display board. In addition, various display means such as those that illuminate the display board with indirect light or combinations of these illumination methods are used to illuminate and display the display board. At this time, in order to make the indication state of the light emitting pointer 3 easy to see, the pointer 3 is transmitted and illuminated through the light guide 11 by the light beam emitted from the light source (light emitting diode 7).

  However, although the luminous indicator 3 is bright and brilliant when illuminated, the indication state of the pointer can be distinguished well and is easy to see, but partially leaks from around the pointer cap 10 that blinds the pointer base 3B. There is a problem that the halation phenomenon in which the light enters the line of sight occurs, and the illumination effect by the broken pointer light emitting illumination is halved. That is, since the pointer base 3B of the light emitting pointer 3 is covered with the pointer cap 10, light leakage from the covered portion is suppressed, but light leakage occurs between the pointer cap 10 and the display board 5. There is.

In consideration of this point, the applicant of the present application, for example, as a countermeasure against light leakage, as shown in Patent Document 1, for example, as shown in Patent Document 1 and the like, the wall of the pointer cap that covers the rotation center region of the pointer in a light-shielding ring shape. By being provided on the display board so as to be located on the inner side, a labyrinth is formed by the ring-shaped wall and the rising wall portion of the pointer cap, and light leakage from between the pointer and the display board can be suppressed. Propose something like this.
JP 2004-301643 A

  By the way, in the indicator instrument which consists of patent documents 1 etc., at the time of pointer illumination on a display board, dimension setting of a ring-shaped wall, a gap interval with a pointer cap, a maze-like lapping allowance, etc. It is difficult to adjust and set the installation position, etc. Also, it is assumed that the light leaks partially depending on the dimensional variation of the assembled parts and the conditions of the installation position. It may end up.

  Therefore, in order to cope with the above-described problems, the present invention performs pointer illumination (transmission illumination) with a light beam emitted from a light source for a light emission pointer and uses a light beam emitted from a light source for a light emission pointer. Accordingly, an object of the present invention is to provide a novel indicating instrument which can display a portion of the surface portion on the display plate located in the outer portion of the pointer cap in an annular manner and can improve the appearance.

  In order to solve the above-described problems, the present invention provides a display plate having an indicator portion and a distal end side of a rotary shaft provided in a main body of a meter through a through-hole portion of the display plate. The indicator includes a light emitting pointer fixed to the light source, a light source for transmitting and illuminating the light emitting pointer, and a light guide disposed between the light source and the light emitting pointer. Formed by a material having a characteristic, and is formed by an indicator portion that is instructed to rotate along the indicator portion of the display plate, and a pointer base portion that is fixed to the distal end side of the rotation shaft. A light receiving unit that receives an irradiation light beam from the light source, an emission unit that guides the light beam guided by the light receiving unit into the light guide body to the pointer base of the light emission pointer, and the light receiving unit through the light receiving unit. The light beam guided to the surface portion of the display plate A indicating instrument characterized by comprising providing a reflective portion to lead the guide.

  According to a second aspect of the present invention, in the indicating instrument according to the first aspect, a pointer cap is attached to the light emitting pointer so as to cover a front side peripheral edge of the pointer base portion, the light guide, and the through hole portion of the display plate. It is characterized by being fixed.

  Moreover, in Claim 3, in the indicating instrument of Claim 1 or Claim 2, it is from the concave surface with respect to the outer-periphery edge part of the said display board around the said through-hole part located in the center part of the said display board. It is characterized by forming the recessed part which becomes.

  According to a fourth aspect of the present invention, in the indicating instrument according to any one of the first to third aspects, the surface portion of the light guide portion that is reflected and guided by the reflective portion of the light guide is emitted. It is characterized by being subjected to graining.

  Further, in claim 5, in the indicating instrument according to any one of claims 1 to 4, on the surface portion of the light guide portion that is reflected and guided by the reflection portion of the light guide and emitted. Further, it is characterized by being subjected to a coloring process having a hue different from the illumination color of the light emission pointer.

  Moreover, in Claim 6, in the indicating instrument according to any one of Claims 1 to 5, the surface of the light receiving portion of the light guide is formed in a convex shape. .

  According to a seventh aspect of the present invention, in the indicating instrument according to any one of the first to fifth aspects, the surface of the light receiving portion of the light guide is formed in a concave shape.

  In the present invention, the pointer is formed of a light-transmitting material, and is formed of an instruction portion that is instructed to rotate along the indicator portion of the display board, and a pointer base portion that is fixed to the distal end side of the rotation shaft of the instrument body. In the light guide for pointer illumination, the light receiving unit that receives the irradiation light from the light source for pointer illumination, and the light guided into the light guide by the light receiving unit is emitted to the pointer base of the light emitting pointer Since it is an indicating instrument characterized by comprising an emitting part for guiding and a reflecting part for guiding and guiding the light beam guided into the light guide by the light receiving part to the surface part of the display plate, The light beam from the light source is guided into the light guide body, and a part of the light beam guided into the light guide body is emitted and guided to the pointer base part of the light emission pointer through the emission part, and emitted from the pointer base part. Introduce it to the indicator part of the pointer to shine, While guiding a part of the irradiation light from the light source for pointer illumination into the light guide, it guides and guides it to the surface part of the display board through the reflecting part, and the surface part of the display board located at the periphery of the pointer base part It can be brightly illuminated and dimly lit as you go outwards, so you can expect a good looking and innovative lighting effect, thereby achieving your initial objectives it can.

  According to claim 1 of the present invention, a display plate provided with an indicator portion, a light emission indicator fixed to the tip end side of a rotating shaft provided in the instrument body through a through hole portion of the display plate, and the light emission indicator In the indicating instrument comprising a light source for transmitting and illuminating the light source and a light guide disposed between the light source and the light emitting pointer, the pointer is formed of a light-transmitting material and the display A light receiving portion that receives an irradiation light beam from the light source, and is formed by an indication portion that is instructed to rotate along an indicator portion of the plate and a pointer base portion that is fixed to a distal end side of the rotation shaft; An emission part for emitting and guiding a light beam guided into the light guide body by the light receiving part to a pointer base part of the light emission pointer; and a light beam guided into the light guide body by the light receiving part of the display plate. It is provided with a reflection part that guides to the surface part and guides it. The indicator instrument is characterized by the fact that the irradiation light from the light source for pointer illumination is guided into the light guide body, and a part of the irradiation light guided into the light guide body is emitted through the emission part. It is possible to guide and guide the pointer to the pointer base, guide the light from the pointer base to the indicator of the light emission pointer, and shine. Further, while guiding a part of the irradiation light from the light source for illuminating the pointer into the light guide body, the guidance light is guided to the surface portion of the display plate through the reflection portion, and the display plate located at the periphery of the pointer base portion is guided. While the surface portion is brightly illuminated, the illumination display can be performed so that the surface portion becomes dim as it goes to the outside, and there is an effect that it is possible to expect a novel lighting effect with a good appearance.

  The indicator instrument according to claim 1, wherein a pointer cap is attached and fixed to the light emitting pointer so as to cover a front side peripheral edge of the pointer base, the light guide, and the through hole portion of the display plate. As a result, the pointer base portion of the light emitting pointer and the periphery of the light guide and the through hole portion of the display plate can be hidden by the pointer cap, and the surface portion of the display plate is brightened annularly so as to surround the pointer cap. Can illuminate. (Claim 2)

  Further, in the indicating instrument according to claim 1 or 2, a recessed portion having a recessed surface with respect to an outer peripheral edge portion of the display plate around the through-hole portion located at a central portion of the display plate. As a result, the irradiation light reflected and guided by the reflecting surface of the light guide illuminates the surface portion of the display plate by the recessed portion formed of the recessed surface, and the display located in the surrounding area Since the surface portion of the plate becomes dark, it is possible to illuminate so that the illumination effect by light and shade illumination is conspicuous, and a novel illumination effect with a sense of depth can be expected. (Claim 3)

  In addition, in the indicating instrument according to any one of claims 1 to 3, the surface portion of the light guide portion where the light guide portion is reflected and guided by the reflection portion of the light guide body is subjected to embossing. As a result, it is possible to illuminate the surface portion of the display panel by uniformly diffusing the surface portion, which is the exit surface of the light guide, to produce illumination unevenness in terms of lighting effect. It is possible to provide a lighting effect of an indicating instrument that is easy to see and has a good appearance. (Claim 4)

  Further, in the indicating instrument according to any one of claims 1 to 4, a light emitting pointer is formed on a surface portion of the light guide portion where the light guide portion is reflected and guided by the reflection portion of the light guide. By applying a coloring process with a color different from the illumination color, the surface part of the display board located at the periphery of the pointer base is illuminated brightly with an illumination color different from the color of the light emission pointer, and dims as it goes outward As a result, it is possible to display the illumination in a dim manner, and to expect a novel illumination effect with a good appearance. (Claim 5)

  Further, in the indicating instrument according to any one of claims 1 to 5, irradiation from a light source for pointer illumination is formed by forming a convex surface of the light receiving portion of the light guide. It is also possible to set so that the light beam guided by the light receiving part formed in a convex shape is concentrated and guided and guided to the exit part and the reflection part part. It is possible to expect a novel lighting effect with a good appearance while improving the lighting efficiency of the surface portion of the plate. (Claim 6)

  Further, in the indicating instrument according to any one of claims 1 to 5, an irradiation light beam from a light source for pointer illumination is formed by forming a concave surface of the light receiving portion of the light guide. The light beam guided by the light receiving part formed in a concave shape can be guided and guided to the exit part or the reflection part part of the light guide directly or by internal reflection of the light guide. Therefore, it is possible to expect a novel lighting effect with a good appearance while improving the illumination efficiency of the light emission pointer and the illumination efficiency of the surface portion of the display panel. (Claim 7)

  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the indicating instrument of the present invention is applied to a vehicle (automobile) indicating instrument will be described below with reference to the accompanying drawings. The same reference numerals are used for the same or corresponding parts as those in the conventional example described above.

  A first embodiment of the present invention is shown in FIGS. In the figure, a light emitting pointer 3 that is fixed to the distal end side of the rotating shaft 2 of the instrument body 1 and rotates around the rotating shaft 2 and a scale, a number, or a symbol that is positioned on the back side of the light emitting pointer 3 and is transmitted and illuminated. A display board 5 provided with an indicator portion 4 made of, etc., a hard circuit board 6 made of glass epoxy resin located on the back side of the display board 5, and a pointer 3 provided on the circuit board 6 respectively. In order to divide the light emitting diodes 7 and 8 that are light sources for illuminating the display board 5 and the respective instrument bodies 1 and display devices, and to illuminate the light emitting diode 7 and the display board 5 side for illuminating the light emission pointer 3 These are divided into areas to be illuminated by a housing 9 made of a synthetic resin frame that divides the illumination area, and a cylindrical partition wall 9A provided in the housing 9. In this embodiment, an instrument body 1 that rotates the rotating shaft 2 is fixedly attached to the back of the circuit board 6.

  In the light emitting pointer 3, the indicator portion 3A and the pointer base portion 3B fixed to the rotating shaft 2 are integrally formed of a transparent synthetic resin, and the pointer base portion 3B is covered with a pointer cap 10 made of a light-shielding synthetic resin. Yes. In this case, the indicator 3A of the light emission pointer 3 is configured to receive light from the light emitting diode 7 (light source) and emit light.

  The pointer cap 10 is formed by a substantially cylindrical holding portion 10A that is engaged with and fixed to the pointer base portion 3B, and a substantially flat-shaped blindfold portion 10B that is provided integrally with the holding portion 10A. .

  The display board 5 is made of a substantially flat substrate made of a transparent synthetic resin, and has, for example, a white translucent display layer 4A on the surface (upper surface in the figure) at four index portions such as scales, numbers, or symbols. A light-shielding black ground color layer 4B is applied to the entire surface of the display panel 5 except for the four indicator portions. Further, the light emitting pointer 3 is fixedly held on the tip end side of the rotating shaft 2 provided in the instrument main body 1 through the through hole portion 5 </ b> A of the display plate 5.

  Further, the display plate 5 is provided with a recessed portion 5B having a curved concave surface with respect to the outer peripheral edge portion of the display plate 5 around a through-hole portion 5A located at the center portion of the display plate 5. Yes.

  A plurality of light emitting diodes 7 for light emission of the pointer are located inside the cylindrical partition wall 9A, and are provided in a plurality of concentric circles around the rotation shaft 2 in the vicinity of the rotation shaft 2. A light guide 11 for guiding the light emitting pointer 3 toward the pointer base 3B is disposed inside the cylindrical partition wall 9A. Further, a plurality of light emitting diodes 8 that transmit and illuminate the indicator portion 4 of the display panel 5 are provided outside the cylindrical partition wall 9A so as to surround the rotating shaft 2 in a circular shape. A light guide 12 for guiding the irradiation light beam toward the indicator portion 4 side of the display board 5 is disposed. The light guide body 12 guides the irradiation light beam to the back surface side of the display plate 5, and the indicator portion of the display board 5. 4 is configured to transmit light. The light guide 12 and the light guide 11 for pointer illumination are supported by a light case 9B formed integrally with the housing 9 made of the frame.

  The light guide 12 for display panel illumination and the light guide 11 for pointer illumination are located between the display board 5 and the circuit board 6 and are made of a light-transmitting synthetic resin such as polycarbonate or acrylic. In the embodiment, a colorless and transparent material having no color is used.

  By the way, the light guide 11 for pointer illumination in the first embodiment includes a light receiving portion 11A that receives light from the light emitting diode 7 serving as a light source, and a light beam received by the light receiving portion 11A in the light guide 11. Injecting and guiding the guided light beam to the pointer base 3B of the light emission pointer 3 to guide the emission, and a part of the light beam guided into the light guide 11 by the light receiving unit 11A is displayed. A reflecting portion 11C that guides and guides the surface of the plate 5 is provided.

  In this case, the light receiving portion 11A is formed so that the surface facing the light emitting diode 7 is in the closest state and the surface is convex so that the distance between the surrounding portions is gradually increased. 11C is located inside the through-hole portion 5A of the display panel 5 and is formed so as to protrude above the surface of the display panel 5 and be disposed.

  In the illumination device of the indicating instrument according to the first embodiment having the above-described configuration, the light beam emitted from the light emitting diode 8 for emitting the display panel is emitted to the light case 9B through the light guide 12. The emitted light beam is reflected by the curved portion provided on the inner surface side of the light case 9B and guided to the indicator portion 4 of the display panel 5, and the semi-transparent display layer 4A of the indicator portion 4 is irradiated with light. Is brightly transmitted.

  The light beam emitted from the light emitting diode 7 for emitting the pointer light enters the pointer base portion 3B provided on the light emitting pointer 3 through the light guide 11, and the indicator portion 3A emits light. At this time, the light beam emitted from the light emitting diode 7 which is a light source is guided to be guided into the light guide 11 through the light receiving portion 11 </ b> A of the light guide 11, and the irradiation guided into the light guide 11. A part of the light beam is guided and guided to the pointer base 3B of the light emission pointer 3 through the emission part 11B, and can be guided from the pointer base 3B to the instruction part 3A of the light emission pointer 3 to make it shine. At the same time, while guiding a part of the irradiated light from the light emitting diode 7 which is a light source for pointer illumination into the light guide 11, it is guided and guided to the surface portion of the display plate 5 through the reflecting portion 11C. It is possible to illuminate and display the surface portion of the display board 5 located at the periphery of the pointer base 3B so as to become dimmed toward the outside, and has a good appearance and a novel lighting effect. There is an effect that can be expected.

  Further, by forming a recessed portion 5B having a recessed surface with respect to the outer peripheral edge portion of the display plate 5 around the through-hole portion 5A located at the center portion of the display plate 5, the light guide 11 is formed. The irradiation light reflected and guided by the reflecting part 11C illuminates the surface part of the display board 5 by the recessed part 5B having a concave surface, and the surface part of the display board 5 located in the surrounding area becomes dark. Therefore, it is possible to illuminate the lighting effect by the light and shade lighting in a conspicuous manner, and to obtain a novel lighting effect with a sense of depth.

  In addition, the light receiving part 11A is formed so that the surface of the light receiving part 11A has a convex shape so that the part facing the light emitting diode 7 is in the closest state and the distance of the surrounding part gradually increases. The light beam guided by the light receiving part 11A formed in a convex shape from the light emitting diode 7 which is a light source for illumination of the pointer is guided and guided to the emission part 11B and the reflection part 11C. Therefore, it is possible to expect a novel lighting effect with a good appearance while enhancing the illumination efficiency of the light emission indicator 3 and the illumination efficiency of the surface portion of the display panel 5.

  Further, the pointer 3 of the light emitting pointer 3 is fixed to the light emitting pointer 3 by attaching and fixing the pointer cap 10 so as to cover the front edge of the pointer base 3B, the light guide 11 and the through hole portion 5A of the display plate 5. The peripheral edge of the base 3B, the light guide 11 and the through hole 5A of the display plate 5 can be hidden by the pointer cap 10, and the surface portion of the display plate 5 is brightened in an annular shape so as to surround the pointer cap 10. Can illuminate. At this time, the portion located immediately around the pointer cap 10 is brightly illuminated, and as it moves away, the brightness gradually changes so that the brightness gradually becomes darker. The lighting effect can be emphasized.

  4 and 5 show a second embodiment of the present invention, and the same parts as those in the first embodiment and the equivalent parts will be described with the same reference numerals.

  In the figure, a plurality of light emitting diodes 7 are provided inside the cylindrical partition wall 9A in the same manner as in the first embodiment described above and are concentrically provided around the rotating shaft 2 in the vicinity of the rotating shaft 2. A light guide 11 for guiding the light beam emitted from the light emitting diode 7 toward the pointer base 3A side of the light emitting pointer 3 is disposed inside the cylindrical partition wall 9A.

  A plurality of light-emitting diodes 8 that transmit and illuminate the indicator portion 4 of the display panel 5 are provided outside the cylindrical partition wall 9 </ b> A so as to surround the rotating shaft 2 in a circular shape. In this case, the irradiation light from the light emitting diode 8 is directly guided to the indicator portion 4 side of the display plate 5 for transmission illumination, or the inner surface portion of the light case 9B formed integrally with the housing 9 is used as a reflection surface. The display panel 5 is guided to the indicator section 4 and is transmissively illuminated.

  The light guide 11 includes a light receiving portion 11A that receives light from the light emitting diode 7 serving as a light source, and the light received by the light receiving portion 11A in substantially the same manner as in the first embodiment. An exit portion 11B that guides the guided light beam to the pointer base portion 3B of the light emission pointer 3 and guides the light beam, and a portion of the light beam guided into the light guide 11 by the light receiving portion 11A. A reflecting portion 11C that guides and guides the surface portion of the display panel 5 is provided.

  In the second embodiment, a portion facing the light emitting diode 7 is formed in a concave shape on the surface of the light receiving portion 11 </ b> A of the light guide 11 facing the light emitting diode 7. Thereby, the light guide 11 is directly or by internal reflection of the light guide 11 with the light guided by the light receiving part 11A formed in a concave shape from the light emitting diode 7 which is a light source for pointer illumination. It is set so that it can be guided and guided to the emission part 11B and the reflection part 11C, and the reflection part 11C is located inside the through-hole part 5A of the display board 5, It is formed so as to protrude above the surface of the display panel 5.

  In addition, the surface portion (injection surface) of 11 portions of the light guide body that is reflected and guided by the reflection portion 11C of the light guide body 11 is subjected to the texture processing 11D. The surface portion of the display panel 5 can be illuminated by being diffused to prevent illumination unevenness in terms of illumination effect.

  As described above, in the second embodiment, the light guide 11 is guided directly or by internal reflection of the light guide 11 through the light receiving portion 11A formed by forming the light emitted from the light emitting diode 7 in a concave shape. The light guide 11 can be concentrated and guided to the emission part 11B and the reflection part 11C, and the introduction efficiency of the irradiation light beam to the light guide 11 can be improved. Similarly, the light emitting pointer 3 can be brightly lit and displayed, and a texture applied to the surface portion (exit surface) of the 11 portions of the light guide that is reflected and guided by the reflecting portion 11C of the light guide 11 is emitted. By processing 11D, it is possible to uniformly diffuse and illuminate the surface portion of the display panel 5, and it is possible to prevent the problem that illumination unevenness occurs in terms of illumination effect.

  FIG. 6 shows a third embodiment of the present invention, and the overall basic configuration is substantially the same as that of the above-described embodiments. Here, a coloring process comprising a hue different from the illumination color of the light emission pointer, for example, a blue hue, on the surface portion (emission surface) of the light guide 11 that is reflected and guided by the reflecting portion 11C of the light guide 11 Layer 11E (coloring treatment) is applied, and a conical concave surface is formed around the through-hole portion 5A located at the center of the display panel 5 with respect to the outer peripheral edge portion of the display panel 5. A recessed portion 5B is formed.

  Accordingly, the surface portion of the display board 5 located at the periphery of the pointer base 3B is brightly illuminated with an illumination color (blue) different from the color of the light emitting pointer 3, and the display is dimly illuminated so as to become dimmed toward the outside. Can be expected, and can be expected to have a novel lighting effect with good appearance.

  The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the present invention. For example, in each of the above-described embodiments, a light emitting diode is used as a light source. For example, the light source may be a small cold-cathode tube, and the number of light sources and installation positions may be set in accordance with the thickness and shape of the light guide 11. In each of the embodiments, the light guide 11 is formed to be colorless and transparent. However, depending on the case, two portions of the light guide for illumination of the pointer and illumination of the display panel are formed and illuminated with different shades. You may comprise so that it may display. Moreover, in each Example, although the recessed part 5B which consists of a concave surface with respect to the outer-periphery edge part of the display board 5 was formed around the through-hole part 5A located in the center part of the display board 5, depending on conditions, Of the light guide 11 in which the entire surface of the display panel 5 is formed as a flat surface, and the peripheral portion of the through-hole portion 5A provided in the display panel 5 protrudes upward from the surface of the display panel 5. You may comprise so that illumination display may be carried out by irradiating the surface of the display board 5 directly with the irradiation light reflected and guided by the reflection part 11C.

  Further, the shape of the surface of the light receiving portion 11A provided in the light guide 11, the angle setting of the reflecting portion 11C, the setting of the size and curvature of the reflecting surface of the surface portion, and the like are appropriately set according to the conditions of the illumination brightness and the illumination area. It is good.

  Further, as described in detail in the above-described embodiments and the like, the illumination device for the instrument has been described by taking the indicator instrument for a vehicle such as an automobile as an example. The present invention can also be applied to instruments for special vehicles such as machines.

FIG. 1 is a front view showing an indicating instrument in the first embodiment of the present invention. FIG. 2 is a cross-sectional view showing a main part of the indicating instrument of FIG. FIG. 3 is a schematic sectional view showing an illumination optical path guided from the light source of FIG. FIG. 4 is a cross-sectional view showing the main structure of the indicating instrument in the second embodiment of the present invention. FIG. 5 is a schematic cross-sectional view showing the main structure of the light guide and the illumination optical path guided from the light source in the indicating instrument of FIG. FIG. 6 is a schematic cross-sectional view showing the main structure of the indicating instrument and the illumination optical path guided from the light source in the third embodiment of the present invention. FIG. 7 is a front view showing a conventional indicating instrument. FIG. 8 is a cross-sectional view showing a main part of the illumination device in the indicating instrument of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Instrument main body 2 Pointer axis 3 Pointer 3A Pointer 3B Pointer base 4 Indicator unit 4A Semi-transparent display layer 4B Ground color layer 5 Display board 6 Circuit board 7 Light emitting diode (light source)
8 Light emitting diode (light source)
DESCRIPTION OF SYMBOLS 9 Housing 9A Partition wall 9B Light case 10 Pointer cap 11 Light guide 11A Light-receiving part 11B Light emission part 11C Reflection part 11D Texture processing 11E Coloring process 12 Light guide

Claims (7)

  A display plate provided with an indicator portion, a light emitting pointer fixed to the distal end side of a rotating shaft provided in the instrument body through a through-hole portion of the display plate, and a light source for transmitting and illuminating the light emitting pointer In the indicating instrument comprising the light source and the light guide disposed between the light emitting pointer, the pointer is formed of a light-transmitting material and is rotated along the indicator portion of the display board. The light guide is formed by an instruction portion that is instructed to move and a pointer base portion that is fixed to the distal end side of the rotating shaft. The light guide includes a light receiving portion that receives an irradiation light beam from the light source, and the light guide portion that guides the light guide. An emission part for emitting and guiding a light beam guided into the body to the pointer base part of the light emitting pointer, and a reflection for guiding and guiding the light beam guided into the light guide body by the light receiving part to the surface portion of the display plate An indicator characterized by comprising a part .   The indication according to claim 1, wherein a pointer cap is attached and fixed to the light emitting pointer so as to cover a front side peripheral edge of the pointer base, the light guide, and the through hole portion of the display plate. Instrument.   The recessed part which consists of a recessed surface with respect to the outer-periphery edge part of the said display board is formed in the circumference | surroundings of the said through-hole part located in the center part of the said display board, The Claim 1 or Claim characterized by the above-mentioned. 2. The indicating instrument according to 2.   4. The surface portion of the light guide portion that is reflected and guided by the reflection portion of the light guide and is subjected to a graining process, according to any one of claims 1 to 3. The indicated instrument.   The surface portion of the light guide portion reflected and guided by the reflection portion of the light guide is subjected to a coloring process having a hue different from the illumination color of the light emission pointer. The indicating instrument according to any one of claims 4 to 5.   The indicator instrument according to any one of claims 1 to 5, wherein a surface of the light receiving portion of the light guide is formed in a convex shape.   The indicator instrument according to any one of claims 1 to 5, wherein a surface of a light receiving portion of the light guide is formed in a concave shape.

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