JP2005351670A - Indicating instrument - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a indicating instrument capable of improving in workability by devising an ingenious plan in the constitution of a partition board etc. <P>SOLUTION: The light emitted from a light-emitting diode 6, passing through a through hole 24, is incident on a pointer 3, in a first housing 11, a retainer 11a being a rest part for supporting the periphery of the through hole 24 of a dial plate 2 is provided, and in a second housing 12, a catch 12a being a catch part for fixing the dial plate 2 inbetween the retainer 11a is provided as a constitution. Thereby, in the assembling process of a speed meter 1, since the moveable clearance of the dial plate 2 in an axial direction of a shaft 41, after the catch 12a passes through the through hole 24 of the dial plate 2, is made larger than conventional indicating instruments, the surface 25 of the dial plate 2 can be completely fixed by the catch 12a after moving the dial plate 2 by the amount needed, and the speed meter 1 improved in workability of fixing the dial plate 2 can be provided. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a pointer instrument that is mounted on, for example, an automobile and instructs various information.

  As a conventional pointer instrument, for example, a dial plate on which a character, a symbol, a scale, etc. are displayed on a translucent substrate, a translucent pointer provided rotatably on the dial plate, The printed board provided behind the dial, the dial illumination light source and the pointer illumination light source provided on the printed board dial side, and the dial illumination light source are accommodated between the dial and the printed board. A dial illumination chamber, a pointer illumination chamber for storing a pointer illumination light source, and a partition member for partitioning the dial illumination chamber and the pointer illumination chamber are provided. A hole that allows light from the light source to pass through is formed, and the partition member is provided with a mounting portion that supports the periphery of the hole portion of the dial plate, and the dial plate is sandwiched and fixed between the mounting portion There is a thing provided with the latching | locking part to perform (refer patent document 1).

  In this way, the dial plate illumination chamber and the pointer illumination chamber are partitioned by the partition member, and each illumination chamber is illuminated by the dial plate illumination light source and the pointer illumination light source, respectively. Therefore, since the pointer is illuminated by the pointer illumination light source that is a light source dedicated to the pointer, it is possible to illuminate the pointer brighter than in the past.

Further, the partition member is provided with a placement portion that supports the periphery of the hole portion of the dial, and is provided with a locking portion that sandwiches and fixes the dial between the placement portion. For this reason, the partition member not only separates the dial plate illumination chamber and the pointer illumination chamber and prevents the mutual light from entering the adjacent illumination chamber, but also places the dial plate around the hole in the dial plate. In addition, it can be fixed by the locking portion to prevent the dial from vibrating.
Japanese Patent No. 3211229

  In the above-described conventional pointer instrument, the dial has a hole peripheral portion sandwiched and fixed between the placing portion of the partition member and the locking portion. That is, the mounting portion restricts the movement of the dial plate in the direction of the printed board, and the locking portion restricts the movement of the dial plate in the direction away from the printed board. In this case, in the partition member that holds the dial, the size of the gap between the placement portion and the locking portion regulates the amount of movement of the dial in the direction of the rotation axis to the minimum, and the dial It is set to be slightly larger than the thickness dimension of the dial so that the locking operation to the locking portion can be performed. Further, the placement portion and the locking portion provided in the partition member are arranged so as to overlap in the axial direction of the rotation shaft of the pointer. Further, in the dial plate locking operation, the dial plate is moved from the outside of the partition member toward the partition member. In other words, the dial plate is moved in the axial direction of the rotating shaft, and the locking portion is passed through the dial plate. The holes are passed through and locked to the surface of the dial.

  That is, in the conventional pointer instrument assembling process, the distance that the dial can move in the axial direction of the rotating shaft after the locking portion passes through the through hole of the dial is very small. For this reason, due to the dimensional variation of each part, mainly due to the plate thickness of the dial, and the dimensional variation of the gap between the mounting portion of the partition member and the locking portion, the locking portion is completely on the surface of the dial. It can be difficult to lock.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a pointer instrument capable of improving dial plate fixing workability by devising a configuration of a partition plate and the like.

  In order to achieve the above object, the present invention employs the following technical means.

  The pointer instrument according to claim 1 of the present invention is fixed to a dial plate having a display design and made of a translucent material, and a rotary shaft that is inserted through a through hole formed in the dial plate, and along the dial plate surface. A pointer made of a translucent material disposed so as to be rotatable, a printed circuit board disposed on the back side of the dial, a first light source mounted on the dial side of the printed circuit board to illuminate the dial, and a print A second light source mounted on the dial side of the board for illuminating the pointer; a first housing disposed between the printed board and the dial to form a dial plate illumination chamber for housing the first light source; and the printed board A pointer instrument that is disposed between the dial and the dial and includes a second housing that forms a pointer illumination chamber that houses the second light source, and light emitted by the second light source passes through the through-hole and enters the pointer And the first housing has a peripheral portion of the through hole of the dial. The mounting portion for lifting provided, the second housing has a configuration in which a locking portion for clamping fixing the dial.

  In this case, the pointer illumination chamber is formed facing the through hole of the dial plate, that is, the second housing is formed so as to accommodate the rotating shaft, and therefore the first housing is disposed on the outer peripheral side of the second housing. Has been. Therefore, the engaging portion provided in the second housing and the placement portion provided in the first housing do not overlap in the axial direction of the rotating shaft as in the case of the conventional pointer instrument, but the rotating shaft Are arranged apart from each other in the radial direction.

  According to such a configuration, in the assembling process of the pointer instrument, the distance that the dial can move in the axial direction of the rotary shaft after the locking portion passes through the through hole of the dial is the same as that of the conventional pointer instrument. It is larger than that. Therefore, in the assembling process of the pointer instrument, the dial can be easily moved so that the locking portion is completely locked to the surface of the dial. Can be provided.

  In the pointer instrument according to claim 2 of the present invention, the first housing includes a reflecting member that reflects the light emitted from the first light source toward the dial.

  Generally, a light source, such as a light emitting diode, emits light radially, that is, conically. For this reason, part of the light emitted from the first light source in the dial plate illumination room does not go toward the display design of the dial plate, in other words, does not contribute to the transmitted illumination of the display design.

  Therefore, by providing the first housing with a reflecting member that reflects the light emitted from the first light source toward the dial, the light emitted from the first light source and traveling in a direction other than the display design is displayed by the reflecting member. It can be reflected in the direction and used for transmitted illumination of the dial. That is, the utilization efficiency of the light emitted from the first light source with respect to the dial illumination can be almost 100%.

  The pointer instrument according to claim 3 of the present invention has a configuration in which the first housing and the second housing are integrally formed.

  With such a configuration, it is possible to reduce the number of parts and assembly man-hours.

  Hereinafter, a case where the speedometer 1 mounted on a combination meter 100 installed in a passenger compartment of an automobile is applied to a pointer instrument according to the present invention will be described with reference to the drawings.

  FIG. 1 is a partial front view of a combination meter 100 including a speedometer 1 which is a pointer instrument according to an embodiment of the present invention. In FIG. 1, the upper side is the upper side of the automobile, and the left-right direction is the width direction of the automobile.

  FIG. 2 is a cross-sectional view of the speedometer 1 according to an embodiment of the present invention, and is a cross-sectional view taken along the line II-II in FIG. In FIG. 2, the left side is a driver's seat, and the speedometer 1 is visually recognized from the left side in FIG.

  FIG. 3 is a cross-sectional view illustrating a deformed state of the dial 2 when the speedometer 1 according to the embodiment of the present invention is assembled.

  FIG. 4 is a schematic diagram for explaining an electric circuit configuration of the combination meter 100 including the speedometer 1 according to the embodiment of the present invention.

  The combination meter 100 is provided so that the driver can visually recognize the front of the driver's seat in the passenger compartment of the automobile, and displays information related to the operating state of the automobile (travel speed, engine speed, etc.) and other various information. is there.

  As shown in FIG. 1, the speedometer 1 that is a pointer instrument generally includes a dial 2 having scales and numerals, and a pointer 3 that rotates along the surface of the dial 2. The driving speed of the automobile is instructed to be visible to the driver by the rotation angle.

  The dial 2 is formed of a light-transmitting material, for example, a thin plate such as colorless and transparent polycarbonate resin or acrylic resin, and faces the driver's seat (not shown, left side of FIG. 2) so as to be visible to the driver. Are arranged. The dial 2 includes a scale 21, numerals 22, and characters 23 that are display designs. These scales 21, numerals 22 and characters 23 are for indicating the traveling speed of the automobile together with a pointer 3 which will be described later. The scale 21, the numbers 22, and the characters 23 are formed by applying a light-shielding film to the surface of the dial plate 2 except for the scale 21, the numbers 22, and the characters 23 by painting or printing. That is, only the scale 21, the numbers 22, and the characters 23 are translucent, and their surroundings are light-shielding. As a result, the scale 21, the numbers 22, and the characters 23 are transmitted by light from a light emitting diode 5, which will be described later, as a first light source that is disposed on the back side (right side in FIG. 2) of the dial 2 and transmits and illuminates the dial 2. Illuminated and lit up.

  Moreover, the scale 21 is arrange | positioned on the radial and circular arc centering on the shaft 41 which is a rotating shaft of the pointer 3 mentioned later, as shown in FIG. The numeral 22 is also arranged on an arc centered on the shaft 41, that is, concentrically with the scale 21.

  In the speedometer 1 according to the embodiment of the present invention, the scale 21, the numbers 22, and the characters 23 are kept colorless and transparent, and a light-shielding black paint is applied around them. It is not necessary to limit, and you may give a translucent colored layer to the scale 21, the number 22, and the character 23. FIG. In this case, the scale 21, the numbers 22, and the characters 23 are lit and displayed in a colored color.

  The pointer 3 is made of a translucent material such as a colorless and transparent polycarbonate resin or acrylic resin, and is disposed along the surface 25 of the dial 2 as shown in FIG. The pointer 3 is fixed to a shaft 41 which is a rotation shaft of a movement 4 described later disposed on the back side (right side in FIG. 2) of the dial 2. As a result, when the movement 4 is driven and the shaft 41 rotates, the pointer 3 rotates integrally with the shaft 41. The back surface 31 of the pointer 3 is colored red by printing or hot stamping. As a result, the pointer 3 is illuminated with light from a light emitting diode 6 (to be described later) as a second light source for illuminating the pointer 3 disposed on the back side (right side in FIG. 2) of the dial 2 and is displayed in red. The That is, the light emitted from the light emitting diode 6 incident on the pointer 3 is reflected by the reflecting surface 32 of the pointer 3 toward the tip of the pointer 3, and this reflected light is reflected by the back surface 31 in the driver's visual recognition direction. Is done.

  In addition, a light shielding cap 13 that covers the reflecting surface 32 of the pointer 3 and the vicinity thereof is attached to the pointer 3 as shown in FIGS. 1 and 2. The light shielding cap 13 is made of a light shielding material, for example, a black resin material, and prevents light from the light emitting diode 6 from directly entering the eyes of the viewer and dazzling the viewer. .

  For example, a cross coil actuator or a stepping motor is used as the movement 4 for generating a driving force for rotating the pointer 3. The movement 4 generates torque and rotates the shaft 41 when a voltage is applied from the outside. Thereby, the pointer 3 fixed to the tip of the shaft rotates along the surface 25 of the dial 2.

  The light emitting diode 5, the light emitting diode 6, and the movement 4 described above are mounted on a printed board 7 disposed on the back side of the dial 2 (the right side in FIG. 2). The printed circuit board 7 is formed of, for example, a glass epoxy board or the like, and forms an electric circuit portion of the combination meter 100. Further, as shown in FIG. 1, a controller 8 that controls lighting / extinguishing of the light emitting diode 5 and the light emitting diode 6 is mounted on the printed circuit board 7.

  The controller 8 is composed of, for example, a microcomputer and the like, and controls the turning on / off of the light-emitting diode 5 and the light-emitting diode 6 and the drive control of the movement 4 for rotating the pointer 3.

  As shown in FIG. 2, a first housing 11 that forms a dial plate illumination chamber A that houses the light emitting diode 5 and a pointer illumination chamber B that houses the light emitting diode 6 are disposed between the dial plate 2 and the printed circuit board 7. A second housing 12 to be formed is disposed. In the speedometer 1 according to the embodiment of the present invention, the first housing 11 and the second housing 12 are formed of a resin material and integrated with a casing 10 described later as an outer shell and a structure of the combination meter 100. Is formed.

  The first housing 11 is shaped so that the dial illumination chamber A formed by the dial 2 and the first housing 11 completely covers the scale 21, the numbers 22 and the letters 23 that are the display design of the dial 2. The light emitted from the light emitting diode 5 is prevented from leaking to the outside of the dial plate illumination chamber A, and the outside light is prevented from entering the dial plate illumination chamber A. Moreover, the 1st housing 11 is provided with the retainer 11a which is a mounting part which supports the peripheral part of the through-hole 25 of the dial 2 as shown in FIG. The retainer 11a supports the dial 2 and maintains the axial distance H of the shaft 41 between the dial 2 and the printed circuit board 7. Further, the dial plate 2 includes a reflecting surface 11 b that is a reflecting portion that reflects light emitted from the light emitting diode 5 toward the dial plate 2. In the speedometer 1 according to the embodiment of the present invention, the casing 10 is made of white resin, so that the reflecting surface 11b is white, and the function of the reflecting surface 11b is enhanced, that is, the reflectance is increased. In this case, the reflective surface 11b is a resin molding surface itself, but the reflective surface 11b may be further plated to achieve high reflectivity.

  As shown in FIG. 2, the second housing 12 is formed in a substantially cylindrical shape surrounding the shaft 41 of the movement 4. The second housing 12 prevents light emitted from the light emitting diode 6 from leaking outside the pointer illumination chamber B, and externally. Light is prevented from entering the pointer illumination room B. The light emitted from the light emitting diode 6 enters the pointer 3 from the pointer illumination chamber B through the through hole 24 of the dial 2 and causes the pointer 3 to emit light. Here, in the speedometer 1 according to the embodiment of the present invention, since the second housing 12 is also formed of white resin, the light emitted from the light-emitting diode 6 that is not directly directed to the pointer 3 is the first. 2 The light can be reflected from the inner surface of the housing 12 and incident on the pointer 3 to be used for illumination of the pointer 3. Moreover, the 2nd housing 12 is provided with the latching claw 12a latched to the peripheral part of the through-hole 25 of the dial 2 at the dial 2 side edge part, as shown in FIG. The latching claw 12a latches and fixes the dial plate 2 in cooperation with the mounting portion 11a described above by latching to the peripheral portion of the through hole 25 of the dial plate 2. Here, the outer diameter D of the cylindrical portion of the second housing 12 is set slightly smaller than the inner diameter d of the through hole 24 of the dial 2. Thereby, in the operation of fixing the dial 2 to the casing 10 during the assembly process of the combination meter 100, the dial 2 is passed through the through-hole 24 of the dial 2 while elastically deforming the locking claws 12a. Further, it can be moved to the printed circuit board 7 side. In the speedometer 1 according to the embodiment of the present invention, two locking claws 12a are arranged at intervals of 180 degrees, but the number and positions of the locking claws 12a are two at intervals of 180 degrees. It is not necessary to limit, and may be changed according to the applied combination meter 100.

  The dial 2, the pointer 3, the movement 4, the printed circuit board 7, the first housing 11 and the second housing 12 described above are accommodated and fixed in the casing 10.

  Moreover, as shown in FIG. 2, the transparent cover 14 is installed in the viewer side (left side of FIG. 2) of the dial plate 2 through the substantially frame-shaped facing plate 9. As shown in FIG. The facing plate 9 is made of, for example, a resin material. The transparent cover 14 is made of a transparent resin thin plate or glass. The facing plate 9 and the transparent cover 14 improve the appearance of the combination meter 100 and prevent dust and moisture from entering the combination meter 100.

  Next, the function and effect of the configuration of the second housing 11 and the second housing 12, which are features of the speedometer 1 according to the embodiment of the present invention, specifically, the function and effect of the retainer 11a and the locking claw 12a will be described.

  First, in the conventional pointer instrument, the mounting portion corresponding to the retainer 11a of the speedometer 1 according to the embodiment of the present invention and the locking portion corresponding to the locking claw 12a of the speedometer 1 according to the embodiment of the present invention. Both are provided on the partition member. That is, the peripheral edge of the hole is sandwiched and fixed between the placement portion and the locking portion of the partition member. That is, they are arranged so as to overlap in the axial direction of the rotary shaft of the pointer. Further, the size of the gap between the placing portion and the locking portion restricts the amount of movement of the dial plate in the direction of the rotation axis to the minimum, and enables the locking operation of the dial plate to the locking portion. Thus, it is set slightly larger than the thickness dimension of the dial. Therefore, in the conventional assembling process of the pointer instrument, the distance that the dial can move in the axial direction of the rotating shaft after the locking portion passes through the through hole of the dial is very small. For this reason, due to the dimensional variation of each part, mainly due to the plate thickness of the dial, and the dimensional variation of the gap between the mounting portion of the partition member and the locking portion, the locking portion is completely on the surface of the dial. It can be difficult to lock.

  On the other hand, in the speedometer 1 according to the embodiment of the present invention, the retainer 11a and the locking claw 12a do not overlap in the axial direction of the shaft 41, in other words, when the dial 2 is attached to the casing 10. The dial 41 is arranged so as not to overlap in the moving direction of the dial 2 but in the radial direction of the shaft 41.

  According to such a configuration, when the dial 2 is attached to the casing 10 when the speedometer 1 is assembled, the dial 2 is brought into contact with the retainer 11a while the locking claws 12a are inserted into the through holes 24 of the dial 2. Even after the contact, the dial 2 is pushed into the printed circuit board 7 with the through-hole 24 part fitted into the second housing 12, that is, as shown in FIG. 3, the dial 2 is pressed against the retainer 11a. It is possible to elastically deform the contact portion as a fulcrum. Thus, the locking claw 12a can be completely passed through the through hole 24 and locked to the surface 25 of the dial plate 2, that is, the dial plate 2 can be fixed to the casing 10. Therefore, the speedometer 1 that can improve the workability of fixing the dial 2 can be realized.

  Next, the electric circuit configuration of the speedometer 1 according to the embodiment of the present invention described above will be described with reference to FIG.

  As shown in FIG. 4, electric power is constantly supplied from the battery 17 to the controller 8. In addition, the controller 8 is connected to an ignition switch 16 serving as a switching unit so that its operating state (ON or OFF) can be detected.

  Further, as shown in FIG. 4, a speed sensor 15 for detecting the traveling speed of the automobile is connected to the controller 8 so that a detection signal can be input. The speed sensor 15 detects, for example, the rotational speed of the transmission output shaft of the automobile.

  As shown in FIG. 4, the light emitting diode 5, the light emitting diode 6, and the movement 4 are connected to the controller 8.

  The controller 8 detects the operating state of the ignition switch 16, and when the ignition switch 16 is in the ON state, turns on the light emitting diodes 5 and 6 and calculates the speed of the vehicle based on the detection signal from the speed sensor 15. Then, the movement 4 is driven so that the pointer 3 indicates the calculated speed on the dial 2. On the other hand, when the ignition switch 16 is in the OFF state, the light emitting diodes 5 and 6 are turned off, and the movement 4 is driven so that the pointer 3 indicates a speed of 0 on the dial 2, that is, 0 km / h. Alternatively, the power supply to the movement 4 is stopped. When the energization of the movement 4 is stopped, the shaft 41 of the movement 4 rotates to a position where the pointer 3 indicates 0 km / h by an elastic force of a return spring (not shown).

  In the speedometer 1 according to the embodiment of the present invention described above, the dial 2 made of a translucent material having the scale 21, the number 22, and the character 23, which are display designs, and the penetration formed in the dial 2. A pointer 3 made of a translucent material fixed to a shaft 41 passing through the hole 24 and rotatably arranged along the surface 25 of the dial plate 2, and a printed circuit board 7 arranged on the back side of the dial plate 2 A light emitting diode 5 which is mounted on the dial plate 2 side of the printed circuit board 7 and illuminates the dial plate 2, a light emitting diode 6 which is mounted on the dial plate 2 side of the printed circuit board 7 and illuminates the pointer 3, and the printed circuit board 7. A first housing 11 that forms a dial plate illumination chamber A that is disposed between the dial 2 and accommodates the light emitting diode 5, and is disposed between the printed circuit board 7 and the dial 2 to accommodate the light emitting diode 6. Indicator lighting room The light emitted from the light emitting diode 6 passes through the through hole 24 and enters the pointer 3, and the first housing 11 has the through hole 24 of the dial 2. The second housing 12 is provided with a locking claw 12a which is a locking portion for holding and fixing the dial plate 2.

  In such a configuration, the pointer illumination chamber B faces the through-hole 24 of the dial 2 and the second housing 12 is disposed so as to receive the shaft 41. Therefore, the first housing 11 has the second housing. 12 is arranged on the outer peripheral side. Therefore, the locking claw 12a provided in the second housing 12 and the retainer 11a provided in the first housing 11 do not overlap in the axial direction of the rotary shaft as in the case of the conventional pointer instrument, It arrange | positions away in the radial direction of the rotating shaft.

  Thereby, in the assembly process of the speedometer 1, the distance that the dial 2 can move in the axial direction of the shaft 41 after the locking claw 12a passes through the through hole 24 of the dial 2 is the same as that of the conventional pointer instrument. It is much larger than that. Therefore, in the assembling process of the speedometer 1, the dial 2 can be moved as much as necessary to easily lock the locking claw 12a to the surface 25 of the dial 2, so that the dial 2 is fixed. The speedometer 1 capable of improving the performance can be provided.

  In the speedometer 1 according to the embodiment of the present invention described above, the first housing 11 includes the reflecting surface 11b that is a reflecting member that reflects the light emitted from the light emitting diode 5 toward the dial plate 2. . That is, the first housing 11 is integrally provided with a reflecting surface 11b at a part thereof.

  The light emitting diode 5 emits light radially, that is, in a conical shape. For this reason, in the dial plate illumination chamber A, a part of the light emitted from the light emitting diode 5 does not go to the scale 21, the number 22 and the character 23 which are the illuminated parts of the dial 2, in other words, the scale 21 and the number 22. And it does not contribute to the transmitted illumination of the character 23.

  Therefore, by providing the first housing 11 with a reflecting surface 11b that reflects the light emitted from the light emitting diode 5 toward the dial plate 2, the light is emitted from the light emitting diode 5 in a direction other than the scale 21, the number 22, and the character 23. The light to be reflected can be reflected by the reflecting surface 11b in the direction of the scale 21, the number 22 and the character 23 and used for transmitted illumination of the dial 2. That is, the utilization efficiency of the light emitted from the light-emitting diode 5 with respect to the illumination of the dial 2 can be almost 100%.

  Moreover, in the speedometer 1 by one Embodiment of this invention demonstrated above, it is set as the structure which formed the 1st housing 11 and the 2nd housing 12 integrally. That is, the first housing 11 and the second housing 12 are formed integrally with the casing 10.

  With such a configuration, the number of parts of the speedometer 1, that is, the combination meter 100 can be reduced to reduce the number of assembling steps.

  In the speedometer 1 according to the embodiment of the present invention described above, the light-emitting diode 5 is used as the first light source and the light-emitting diode 6 is used as the second light source. It may be replaced with a light source of a kind, such as a light bulb, a discharge or the like or an EL panel.

  Moreover, although embodiment described above has demonstrated the case where the speedometer 1 mounted in the combination meter 100 installed in the vehicle interior of the motor vehicle is applied to the speedometer 1 as an example, It does not need to be limited, and can be applied to other types of instruments such as a tachometer that indicates the engine speed of the automobile, a fuel meter that indicates the amount of fuel remaining in the fuel tank, and a water temperature meter that indicates the engine coolant temperature. May be. A single combination meter 100 may include a plurality of pointer meters according to the present invention.

  Further, the pointer instrument according to the embodiment of the present invention described above may be applied to various devices for uses other than those for automobiles, such as consumer devices.

It is a partial front view of the combination meter 100 by one Embodiment of this invention, and shows 1 part of speedometers which instruct | indicate the driving speed of a motor vehicle. It is sectional drawing of the combination meter 100 by one Embodiment of this invention, and is the II-II sectional view taken on the line in FIG. It is sectional drawing explaining the deformation | transformation state of the dial 2 at the time of the assembly | attachment of the speedometer 1 by one Embodiment of this invention. It is a mimetic diagram explaining the electric circuit composition of combination meter 100 by one embodiment of the present invention.

Explanation of symbols

1 Speedometer (pointer instrument)
2 Dial 21 Scale (Display design)
22 Numbers (display design)
23 characters (display design)
24 Through-hole 25 Front surface 3 Pointer 31 Back surface 32 Reflecting surface 4 Movement 41 Shaft (rotating shaft)
5 Light-emitting diode (first light source)
6 Light-emitting diode (second light source)
7 Printed circuit board 8 Controller 9 Turn plate 10 Casing 11 First housing 11a Retainer (mounting part)
11b Reflective surface (reflective member)
12 Second housing 12a Locking claw (locking part)
13 Light shielding cap 14 Transparent cover 15 Speed sensor 16 Ignition switch 17 Battery 100 Combination meter A Dial illumination room B Pointer illumination room D Outer diameter d Inner diameter H Distance

Claims (3)

A dial plate having a display design and made of a translucent material;
A pointer made of a translucent material fixed to a rotating shaft that is inserted through a through-hole formed in the dial and rotatably arranged along the dial surface;
A printed circuit board disposed on the back side of the dial,
A first light source mounted on the dial side of the printed board to illuminate the dial;
A second light source mounted on the dial side of the printed circuit board for illuminating the pointer;
A first housing which is disposed between the printed circuit board and the dial and forms a dial illumination chamber for housing the first light source;
A pointer instrument comprising a second housing that is disposed between the printed circuit board and the dial plate and forms a pointer illumination chamber that houses the second light source;
The light emitted from the second light source passes through the through hole and enters the pointer,
The first housing is provided with a mounting portion that supports a peripheral portion of the through hole of the dial,
The pointer instrument according to claim 2, wherein the second housing is provided with a locking portion for sandwiching and fixing the dial.   The pointer instrument according to claim 1, wherein the first housing includes a reflection member that reflects light emitted from the first light source toward the dial.   The pointer instrument according to claim 1 or 2, wherein the first housing and the second housing are integrally formed.

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