JP3301077B2 - Instrument equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an instrument mounted on, for example, a vehicle, and more particularly to an illumination structure thereof.

[0002]

2. Description of the Related Art As an instrument device of this kind, an instrument body having a drive shaft protruding from a circuit board is mounted, and a pointer which receives light from a center of rotation and shines is attached to the tip of the drive shaft. A front panel with a translucent display unit such as scales and characters is arranged behind the hands along the rotation path of the hands, and a light source arranged behind this front panel is used to display the front panel. And those that illuminate the pointer are known.

Specifically, for example, Japanese Patent Application Laid-Open No. 9-10564
As shown in Japanese Patent Application Publication No. 9, the instrument body and the light source are arranged side by side on the front side of the circuit board, and a light guide having a shape bypassing the instrument body is arranged behind the front panel. In general, the light guide guides the illumination light behind the front panel to illuminate the display unit (in this case, the pointer is also illuminated by the light guide at the same time). In the configuration using the light guide as described above, compared to a structure in which a plurality of light sources are arranged directly below the front panel to directly illuminate the display unit (for example, see Japanese Utility Model Application Laid-Open No. 5-33020), the entire display unit is configured. This is advantageous in that illumination unevenness can be easily suppressed.

For example, as shown in Japanese Patent Application Laid-Open No. 9-21655, an instrument body is arranged behind a circuit board, and the instrument body is arranged behind so that the front area of the vacated circuit board (drive (A region near the axis), a light source composed of a light emitting diode, a light guide extending outward from the region near the drive shaft along the front panel, and a reflector supporting the light guide from behind, There is also known a configuration in which illumination light is guided to the outer periphery of a drive shaft by a light guide to illuminate a display unit (in this case, hands are simultaneously illuminated with direct light). In this configuration, the instrument body is located behind the circuit board so that the light source and the front panel can be arranged close to each other.
Providing a flat light guide between the reflector and the front panel has many advantages such as enabling uniform and bright illumination while reducing the overall thickness of the illumination structure.

[0005]

However, Japanese Patent Application Laid-Open No. 9-105649 and Japanese Patent Application Laid-Open No. 9-2165
Since all of the instrument devices disclosed in Japanese Patent Publication No. 5 require a light guide,
Accordingly, there is a problem that the cost of parts and the weight of the entire apparatus increase, and the lighting structure becomes complicated. Also, in the instrument devices of each of these publications, simply eliminating the light guide is
Illumination unevenness and luminance reduction are likely to occur, and the illumination quality may be significantly reduced. The present invention has been made in view of these points, and a main object of the present invention is to improve an illumination structure so that a light guide can be eliminated at least when illuminating a front panel, thereby achieving an inexpensive and lightweight instrument device. Is to be provided.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a circuit board, an instrument body disposed on the circuit board and having a drive shaft extending forward, and mounted on a tip end of the drive shaft. Hands, a front panel disposed between the hands and the circuit board and having a display corresponding to the hands,
A light source disposed at a front side of the circuit board that is closer to the drive shaft than the display unit and illuminating at least the display unit; and a reflector disposed between the front panel and the circuit board, The reflector is arranged in the axial direction of the drive shaft.
A first reflector facing the light source and reflecting the illumination light from the light source to the outer periphery; and the front panel surrounding the light source with an appropriate space extending outward to extend the illumination light to the front surface. And a second reflecting portion that reflects light toward the panel side.

Further, according to the present invention, the instrument main body is arranged behind the circuit board so that a drive shaft passes through the circuit board, and the hands receive light from a rotation center thereof to emit light. The front panel is formed with a penetrating portion that exposes the center of rotation of the pointer, the light source is disposed at a position corresponding to the penetrating portion, and the reflector is positioned at a position corresponding to the penetrating portion. It is characterized by having an opening for passing the illumination light to the rotation center side of the pointer.

The present invention also provides a circuit board, an instrument body disposed behind the circuit board and having a drive shaft extending forward through the circuit board, and a rotation center mounted on the tip end of the drive shaft. A front panel having a pointer that emits light by receiving more light supply, a display unit disposed between the pointer and the circuit board, and a display unit corresponding to the pointer and a through-hole that exposes the center of rotation of the pointer, A light source disposed on the front side of the circuit board corresponding to the penetrating portion and illuminating the hands and the display unit; and a reflector disposed between the front panel and the circuit board, The body has an opening that allows the illumination light from the light source to pass through to the center of rotation of the pointer at a position corresponding to the penetrating portion, and is located outside the opening.
A first reflector that faces the light source in the axial direction of the drive shaft and reflects the illumination light to the outer periphery; and the front panel extends outward with a space appropriately surrounding the light source. And a second reflecting portion that reflects the light to the front panel side.

Further, the present invention is characterized in that a plurality of the light sources are arranged on a concentric circle centered on the drive shaft.

The present invention also provides a circuit board, an instrument body disposed behind the circuit board and having a drive shaft extending forward through the circuit board, and a rotating shaft mounted on the distal end of the drive shaft and extending from a center of rotation. A front panel having a pointer that receives light supply and emits light, a display unit disposed between the pointer and the circuit board, and a display unit corresponding to the pointer and a through-hole that exposes a rotation center of the pointer, A first light source disposed on the front side of the circuit board corresponding to the penetrating portion and illuminating the hands, and a first light source located outside the first light source and on the drive shaft side of the display unit. A second light source arranged on the front side and illuminating the display unit, and a reflector disposed between the front panel and the circuit board, wherein the reflector is located at a position corresponding to the penetrating portion. The illumination light from the first light source An opening passing through a central portion, the outer periphery of the illumination light from the positioned outside the opening faces the <br/> the second light source in the axial direction of the drive shaft and the second light source The first reflecting portion that reflects the light, and the front panel that extends around the second light source with an appropriate space therebetween to extend outward and reflect the illumination light from the second light source toward the front panel side. And two reflecting portions.

Further, the invention is characterized in that the reflector has a partition surrounding the opening and extending in the axial direction of the drive shaft to partition the first light source and the second light source. .

Further, the present invention is characterized in that the partition is provided with the first reflecting portion.

Further, the invention is characterized in that a plurality of the first and second light sources are arranged on a concentric circle centered on the drive shaft.

The present invention also provides the first light source and the second light source.
Are characterized by having different emission colors.

Further, the present invention is characterized in that the first reflecting portion is formed of an inclined surface or an inclined curved surface inclined at a predetermined angle with respect to the front panel.

Further, the present invention is characterized in that the inclined surface or the inclined curved surface is formed in a conical shape surrounding the drive shaft.

Further, the present invention is characterized in that the second reflecting portion comprises an inclined surface or an inclined curved surface which approaches the front panel as going outward.

Further, the present invention is characterized in that the inclined surface or the inclined curved surface is formed so that the inclination angle with respect to the front panel gradually increases toward the outside.

The reflector is made of a white synthetic resin material.

The reflector has a glossy surface.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An instrument device according to the present invention comprises a circuit board, an instrument body disposed on the circuit board and having a drive shaft extending forward, a pointer mounted on a tip end of the drive shaft, and a pointer and a circuit. A front panel having a display unit including scales and characters corresponding to the hands and arranged between the substrate and a display panel disposed at a position on the front side of the circuit board inside (on the drive shaft side of) the display unit. And a reflector disposed between the front panel and the circuit board.

The reflector has a first reflector which reflects light from the light source in the outer peripheral direction at a position facing the light source in the axial direction of the drive shaft, and a first reflector outside the first reflector. At the outer peripheral position), a second reflector is formed to extend outward from the front panel via an air layer so as to surround the light source, and to reflect the illumination light reflected by the first reflector to the front panel side. Then, the display section is illuminated by the illumination light guided through the second reflection section.

By illuminating the front panel (display unit) through the first and second reflectors of the reflector as described above,
The front panel can be brightly and substantially uniformly illuminated without using a light guide. As a result, sufficient illumination quality can be ensured, so that the light guide is eliminated when illuminating the front panel, and cost reduction and weight reduction can be achieved.

In this case, it is desirable that the light source is disposed at a position separated from the display unit by a predetermined distance toward the drive shaft.
In addition, the second reflecting section may be formed so as to cover at least the area behind the front panel including the display section.

The instrument body is disposed behind the circuit board, the drive shaft is penetrated through the circuit board, and the pointer is constituted by a light-emitting pointer which receives light supplied from the center of rotation and emits light. The light source is disposed at a position corresponding to the penetrating part, and the reflector passes the illumination light to the position corresponding to the penetrating part toward the turning center part of the pointer. If an opening is provided, the pointer can be illuminated.

With this configuration, the light from the light source illuminates the display section of the front panel through the first and second reflection sections of the reflector, and at the same time, the opening of the reflector and the penetrating section of the front panel. Since the pointer is illuminated through the front panel, the light guide can be eliminated not only for the front panel but also for the pointer, and the front panel and pointer can be illuminated by a common light source. Therefore, cost reduction and weight reduction can be achieved.

In this case, the light source may be arranged at a position facing the first reflector in the axial direction of the drive shaft and at a position where illumination light can be supplied to the hands through the opening of the reflector and the through portion of the front panel. . Further, if a cylindrical portion surrounding the opening is formed inside the first reflecting portion in the reflector, the illumination light from the light source can be guided to the pointer, and the illumination efficiency of the pointer can be increased.

It is desirable to arrange a plurality of light sources on a concentric circle centered on the drive shaft. By arranging in this way, bright and balanced illumination can be performed.

The instrument body is disposed behind the circuit board, the drive shaft is penetrated through the circuit board, and the pointer comprises a light-emitting pointer which receives light supplied from the center of its rotation and emits light. A first light source for illuminating a pointer is disposed on the front side of the circuit board corresponding to the through portion, and a display portion is provided outside the first light source. A second light source for illuminating the display unit on the drive shaft side (inner side) than the first light source, and an opening for passing illumination light from the first light source to the turning center of the hands on the reflector; 2
A first reflecting portion which faces the light source and reflects the illumination light from the second light source to the outer periphery; and a front panel which extends outward through an air layer so as to surround the second light source and has a first reflection portion. The display unit and the hands can be illuminated simultaneously by providing the second reflection unit that reflects the illumination light reflected by the unit to the front panel side.

With this configuration, the illumination light from the first light source reaches the center of rotation of the pointer through the opening of the reflector and the penetrating part of the front panel to illuminate the pointer. The illumination light emitted from the second light source reaches the display unit of the front panel through the first and second reflectors of the reflector, and illuminates the display unit. The light body can be eliminated, the cost can be reduced and the weight can be reduced, and the first and second light sources are provided for the front panel and the pointer, respectively, so that the amount of light reaching each of the front panel and the pointer Can be increased, and the illumination luminance can be increased.

In this case, it is desirable that the second light source is disposed at a position separated from the display unit by a predetermined distance toward the drive shaft, and the second reflection unit is provided at least behind the front panel including the display unit. It may be formed so as to cover the region.

Further, a partition is provided around the opening around the opening in the axial direction of the drive shaft, and the partition separates the first light source and the second light source. Function as a light guide for guiding the illumination light from the pointer to the pointer, and the illumination efficiency of the pointer can be increased. In the case where the reflector has a tubular portion surrounding the opening, a partition may be provided continuously to the tubular portion.

Further, a first reflecting portion can be provided in the partition portion, and the configuration of the reflector can be simplified by such a configuration.

It is desirable that a plurality of the first and second light sources be arranged on a concentric circle centered on the drive shaft. By arranging in this manner, bright and balanced illumination can be performed. it can.

Further, the configuration in which the reflector has the partition portion is particularly useful when the first light source and the second light source have different emission colors, and the interference between the emission colors of the respective light sources due to the partition portion. Can be prevented.

The first reflecting portion is inclined at a predetermined angle with respect to the front panel, and transmits light from the light source in the outer circumferential direction (second direction).
It is preferable that the light source is formed from a slope or a curved surface that reflects toward the reflecting portion of the light source. In this case, if the slope or the curved surface that constitutes the first reflecting portion is formed in a conical shape surrounding the drive shaft, Light can be reflected in the outer peripheral direction in a well-balanced manner.

It is preferable that the second reflecting portion is formed of an inclined surface or an inclined curved surface which is closer to the front panel as going outward, but the inclined surface or the inclined curved surface constituting the second reflecting portion is preferably formed as follows. If the inclination angle with respect to the front panel is gradually increased toward the outside, the front panel can be more uniformly illuminated.

When the reflector is made of a white synthetic resin material, it is advantageous for weight reduction.

When the wall surface of the reflector is made glossy, the reflection efficiency can be improved.

[0040]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of an instrument device according to the present invention.

FIGS. 1 to 5 show a first embodiment of the present invention. FIG. 1 is an exploded perspective view of an instrument device, FIG. 2 is a plan view showing an assembled state of FIG. 1, and FIG. 3 is a perspective view of a reflector. FIG. 4 is a sectional view taken along line AA of FIG. 2, and FIG. 5 is a sectional view taken along line BB of FIG.

In FIG. 1, the instrument device according to the present embodiment is mounted on a circuit board 1, an instrument body 3 which is conductively fixed to the circuit board 1 and has a drive shaft 2 extending forward, and a tip end of the drive shaft 2. A pointer 4, a front panel 5 disposed between the pointer 4 and the circuit board 1, a light source 6 disposed near the periphery of the drive shaft 2 at a position on the front side of the circuit board 1, and a front panel 5 And a reflector 7 arranged between the circuit board 1.

The circuit board 1 is composed of, for example, a hard circuit board in which a wiring pattern (not shown) is formed on a glass epoxy base material, and a driving means (not shown) for driving and controlling the instrument body 3 and, for example, a resistor And various circuit components (not shown) such as capacitors are electrically connected to the wiring pattern.

The instrument body 3 is composed of a movable magnet instrument or a stepping motor, is mounted behind the circuit board 1 so that the drive shaft 2 passes through the shaft hole 11 formed in the circuit board 1, and is soldered. Are electrically connected to the wiring pattern (the driving means) by appropriate conducting means.

As shown in detail in FIG. 4, the pointer 4 comprises an indicator 41 made of a light-transmitting synthetic resin and a cover 42 for covering the outer periphery of the center R of rotation of the indicator 41.
Extends linearly along the front panel 5 and receives light emitted from a light source 6 disposed behind it at a rotation center portion R, and reflects and guides the illumination light to the front end side. A part 43 is formed.

The front panel 5 has a thin plate base (not shown) made of a light-transmitting synthetic resin and a ground color portion 51 made of, for example, a light-shielding ink and a display portion 52 made of a light-transmitting colored ink. Only the display unit 52 is formed to be light transmissive, and the display unit 52
Is composed of graduations and characters arranged along the rotation trajectory of the pointer 4 so as to be indicated by the pointer, and a penetrating portion 5 that exposes the rotation center portion R of the pointer 4 is provided at a position corresponding to the drive shaft 2.
3 are formed.

The light source 6 is composed of, for example, a chip type light emitting diode, and is located on the front side of the circuit board 1 and on the front panel 5.
Of the drive shaft 2 at a predetermined distance from the display unit 52,
In this case, a plurality of
A plurality are arranged at substantially equal intervals on a concentric circle centered on the drive shaft 2.

The reflector 7 is made of an injection-molded body formed of a white synthetic resin in a case shape, and corresponds to the arrangement of the display sections 52 of the front panel 5 as shown in FIGS. Peripheral wall portion 71 provided in an annular shape
An extension 72 that extends partially from the front side to the center side (drive shaft 2 side) along the front panel 5, and an opening 73 that is supported by the extension 72 and corresponds to the through portion 53 of the front panel 5.
And a cylindrical portion 74 surrounding the cylindrical portion 74 at a predetermined interval and facing the light source 6.
First reflecting portion 75 extending obliquely from the rear end of the first reflecting portion 75
And the first reflecting portion 75 and the cylindrical portion 74 formed on the bottom side corresponding to the first reflecting portion 75 and the cylindrical portion 74.
An annular opening 76 serving as a punching hole when forming a die,
A second reflector 77 extending from the front side of the peripheral wall 71 except the extension 72 to the light source 6 side (opener side).

In this case, at least the outer wall surface on the inner side of the cylindrical portion 74, the outer wall surface on the light source 6 side of the first reflecting portion 75, and the outer wall surface on the front panel 5 side of the second reflecting portion 77 are formed by surface polishing of a molding die. Alternatively, it is formed as a glossy surface by clear coating or the like after molding. Further, in this embodiment, a plurality of reflectors 7 are arranged corresponding to the number of the meter main bodies 3, but these reflectors 7 may be formed by one-piece parts.

The cylindrical portion 74 extends toward the light source 6 along the axial direction of the drive shaft 2 so as to surround the opening 73, and passes through the opening 73 toward the front side (the hand 4 side). And has a function of guiding the illumination light from the guide 4 to the rotation center portion R of the pointer 4.

The first reflecting portion 75 is a substantially conical inclined surface surrounding the cylindrical portion 73 and having a large diameter on the front panel 5 side and a small diameter on the light source 6 side, and faces the light source 6 at a predetermined interval. are doing. The inclination angle is set to approximately 45 degrees with respect to the plate surface of the front panel 5, and is formed so as to reflect the illumination light from the light source 6 in the outer peripheral direction (to the second reflecting portion 77 side). The first reflecting portion 75 is supported by the extending portion 72 together with the cylindrical portion 74, and has a substantially “V” -shaped cross section as shown in FIGS.

The second reflecting portion 77 extends outward (the front side of the peripheral wall portion 71) from the front panel 5 with an air layer S therebetween so as to surround the light source 6, and the front surface gradually increases toward the outside. An inclined surface close to the panel 5,
It is formed in a curved surface (inclined curved surface) in which the inclination angle with respect to the front panel 5 gradually increases toward the outside, and is formed so as to reflect the illumination light reflected by the first reflector 75 to the front panel 5 side. . Note that the second reflecting portion 77 and the first reflecting portion 75 are separated through a portion (opening portion 76) corresponding to the light source 6, so that the direct light from the light source 6 and the reflected light from the first reflecting portion 75 Is the outer circumferential direction
Can be passed to the reflection portion 77 side. Further, by dividing the first and second reflecting portions 75 and 77 from each other in this manner, the air layer S is provided with the light source 6 (first
Of the first reflecting section 75, the second reflecting section 77, and the air layer S, the illumination room for guiding the illumination light from the light source 6 to the front panel 5 is formed. Constitute.

In this case, the light source 6 can supply illumination light to the rotation center portion R (the light receiving / reflecting portion 43) of the pointer 4 through the opening 73 and the penetrating portion 53, and at the same time, can provide the first and second reflecting portions. It is arranged at a position where light can be supplied to the front panel 5 (display unit 52) through 75 and 77.

In such a configuration, when the light source 6 emits light, a part of the illumination light is transmitted to the first reflector 7 of the reflector 7.
The illumination light reflected in the outer peripheral direction (to the second reflection portion 77 side) by the first reflection portion 5 and reaching the second reflection portion 77 is further reflected by the second reflection portion 77 to the front panel 5 side, whereby the hands 4 The display portions 52 arranged in accordance with the rotation trajectory are brightly and substantially uniformly illuminated, and a part of the illumination light of the light source 6 is transmitted through the opening 73 of the reflector 7 and the penetrating portion 53 of the front panel 5. 4 rotation center portion R (light receiving / reflecting portion 4
3), whereby the indicator 41 of the pointer 4 is illuminated over its entire rotation range.

As described above, according to the present embodiment, the circuit board 1, the instrument body 3 disposed on the circuit board 1 and having the drive shaft 2 extending forward, and the pointer 4 attached to the tip end of the drive shaft 2
A front panel 5 disposed between the hands 4 and the circuit board 1 and having a display 52 corresponding to the hands 4;
A light source 6 arranged at the front side of the circuit board 1 closer to the drive shaft 2 than the light source 2 and illuminating at least the display unit 52; and a reflector 7 arranged between the front panel 5 and the circuit board 1; The first reflector 75 in which the reflector 7 faces the light source 6 and reflects the illumination light from the light source 6 to the outer periphery, and the front panel 5 extends outward through the air layer S so as to surround the light source 6 for illumination. By having the second reflecting portion 77 that reflects light to the front panel 5 side, the front panel 5 can be illuminated brightly and substantially uniformly, and thereby sufficient illumination quality can be secured. When the front panel is illuminated, the light guide is eliminated, and cost reduction and weight reduction can be achieved. In addition, by applying such a lighting structure, special light control means (for example, disposing a diffusion plate on the back surface of the front panel 5 or printing a light control mask on the front panel 5 itself) for the purpose of equalizing the light can be realized. This is unnecessary, and this also greatly contributes to cost reduction. In addition, since the illumination light is reflected to the outer periphery by the first reflection unit 75, the front panel 5
And the distance between the circuit board 1 and the
This is also advantageous for making the device thinner.

According to the present embodiment, in addition to the illumination structure of the front panel 5 as described above, the instrument main body 3 is arranged behind the circuit board 1 so that the drive shaft 2 penetrates the circuit board 1 and the hands 4 The front panel 5 is formed with a through-hole 53 for exposing the center-of-rotation R of the pointer 4, and the light source 6 is provided with the through-hole 5.
3 and the reflector 7 is provided with an opening 73 at the position corresponding to the penetrating portion 53 to allow the illumination light to pass to the rotation center R side of the pointer 4. The pointer 4 can be illuminated through the opening 73 and the penetrating portion 53 of the front panel 5, whereby the light guide can be eliminated not only when illuminating the front panel 5 but also when the pointer 4 is illuminated. Can be illuminated by the common light source 6, so that it is not necessary to separately provide a dedicated light source for the pointer, and cost reduction and weight reduction can be achieved.

In this embodiment, the front panel 5 and the pointer 4
Although the example in which both are illuminated has been described, the illuminating means on the hands 4 side is optional as long as at least the front panel 5 side can be illuminated, and the instrument main body 3 is arranged behind the circuit board 1 in the present embodiment. The instrument main body 3 can be arranged on the front side of the circuit board 1 unless the illumination of the hands 4 is particularly considered.

In this embodiment, since the reflector 7 has the cylindrical portion 74 which is located inside the first reflecting portion 75 and surrounds the opening 73, the illumination light from the light source 6 The guide can be efficiently guided to the rotation center portion R, and the illumination efficiency of the pointer 4 can be increased.

In this embodiment, a plurality of light sources 6 are arranged on a concentric circle centered on the drive shaft 2, so that bright and well-balanced illumination can be performed.

In this embodiment, the first reflecting portion 75 is
An inclined surface which is inclined by a predetermined angle with respect to the front panel 5 and reflects light from the light source 6 to the outer periphery (to the second reflecting portion 77 side), and in this case, an inclined surface constituting the first reflecting portion 75 To
By forming the drive shaft 2 in a substantially conical shape surrounding the drive shaft 2, light from the light source 6 can be reflected in a well-balanced manner in the outer peripheral direction.

In this embodiment, the second reflecting portion 77 is
Formed from an inclined curved surface approaching the front panel 5 toward the outside, wherein the inclined curved surface constituting the second reflecting portion is provided so that the inclination angle with respect to the front panel 5 gradually increases toward the outside. Thereby, the front panel 5 can be more uniformly illuminated. The second reflector 77 is not limited to the inclined curved surface, but may be an inclined plane, a combination of a plurality of inclined planes having different inclination angles with respect to the front panel 5, or a combination of the inclined plane and the inclined curved surface.

In this embodiment, since the reflector 7 is formed from a white synthetic resin material, it is advantageous in reducing cost and weight.

The reflection efficiency of the reflector 7 can be increased by making the wall surface of the reflector 7 a glossy surface.

FIG. 6 shows a modification of the first reflecting section 75 as a second embodiment of the present invention.

That is, in the first embodiment, the first reflecting portion 75 is formed in a single conical shape corresponding to all of the plurality (three) of the light sources 6. A plurality (three) of the portions 75 are formed corresponding to the individual light sources 6, and substantially the first reflecting portions 75 are opposed to the respective light sources 6 so that the illumination light can be reflected to the outer periphery. Since it is formed in a semi-conical shape, the same effect as in the first embodiment can be expected even with this configuration.

FIG. 7 is a sectional view showing a third embodiment of the present invention. In this embodiment, each of the front panel and the pointer has a dedicated light source.

That is, in this embodiment, the instrument main body 3 is disposed behind the circuit board 1, the drive shaft 2 penetrates the circuit board 1, and the hands 4 receive light from the center R of rotation to emit light. The front panel 5 is formed with a through-hole 53 that exposes the center of rotation R of the pointer 4, and the front-side panel 5 illuminates the pointer 4 on the front side of the circuit board 1 corresponding to the through-hole 53. The first light source 61 is disposed outside the first light source 61 and closer to the drive shaft 2 than the display unit 52 (in this case,
A second light source 62 that illuminates the display unit 52 is disposed at a position (adjacent to the first light source 61).

The reflector 7 has an opening 73 through which the illumination light from the first light source 61 passes toward the rotation center R (light receiving / reflecting portion 43) of the pointer 4, and faces the second light source 62. Second
Reflection portion 75 for reflecting the illumination light from the light source to the outer periphery
And a second reflection for extending the illumination light reflected by the first reflection portion 75 to the front panel 5 side, with an appropriate space extending outward from the front panel 5 so as to surround the second light source 62. A portion 77 is provided to illuminate the display 52 and the pointer 4 at the same time.

In the present embodiment configured as above, the first
The illumination light from the light source 61 reaches the rotation center portion R of the pointer 4 through the opening 73 of the reflector 7 and the penetrating portion 53 of the front panel 5 to illuminate the pointer 4 (indicating section 41). 2
The illumination light emitted from the light source 62 of the first
Since the display unit 52 is illuminated by reaching the front panel 5 through the second reflection units 75 and 77, the light guide can be eliminated not only for illuminating the hands 4 but also for the front panel 5, achieving reduction in cost and weight. And the front panel 5
And the first and second light sources 61 and 6 for
With 2, the amount of light reaching each of the front panel 5 and the pointer 4 can be increased, and the illumination luminance can be increased.

In the case of this embodiment, the second light source 62
It is desirable to arrange the display unit 52 at a predetermined distance away from the drive shaft side with respect to the display unit 52. The second reflection unit 77 should be formed so as to cover at least the area behind the front panel 5 including the display unit 52. Good.

In this embodiment, a partition 78 extending in the axial direction of the drive shaft 2 continuously from the cylindrical portion 74 surrounding the opening 73 is provided, and the first light source 61 and the second light source 61 are formed by the partition 78. The light source 62 and the light source 62 are configured to be separated from each other.
Can function as a light guide unit that guides the illumination light from the first light source 61 to the pointer 4, and the illumination efficiency of the pointer can be increased. By providing the partition portion 78 in this manner, the cross-sectional shapes of the cylindrical portion 74 including the partition portion 78 and the first reflecting portion 75 are substantially "Y" shaped.

In this embodiment, the first and second light sources 6
A plurality of light sources 1 and 62 are arranged on a concentric circle centered on the drive shaft 2. With this configuration, bright and balanced illumination can be performed.

In the case where the first light source 61 and the second light source 62 are divided by the partitioning portion 78 (the cylindrical portion 74) as in this embodiment, the first light source 61 and the second light source 62 are separated from each other. The emission color of the light source 62 may be different from that of the second light source 62. Even if the emission color of the second light source 62 is different, interference of the emission colors of the light sources 61 and 62 can be prevented by the partition wall 78, and the illumination quality can be improved. it can.

[0074]

As described in detail above, the present invention relates to a circuit board, an instrument body disposed on the circuit board and having a drive shaft extending forward, a pointer mounted on a tip end side of the drive shaft, A front panel disposed between the hands and the circuit board and having a display unit corresponding to the hands, and illuminating at least the display unit disposed at a front side of the circuit board closer to the drive shaft than the display unit; And a reflector disposed between the front panel and the circuit board. The reflector faces the light source in the axial direction of the drive shaft and reflects illumination light from the light source to the outer periphery. By having a first reflecting portion and a second reflecting portion that extends outwardly with an appropriate space between the front panel so as to surround the light source and reflects the illumination light toward the front panel side, For front panel lighting The light guide to be unnecessary, it is possible to provide an instrument system capable of achieving weight reduction at low cost.

The present invention also provides a circuit board, an instrument body disposed behind the circuit board and having a drive shaft extending forward through the circuit board, and a pivot center mounted on the tip end of the drive shaft. A front panel having a pointer that emits light by receiving more light supply, a display unit disposed between the pointer and the circuit board, and a display unit corresponding to the pointer and a through-hole that exposes the center of rotation of the pointer, A light source disposed on the front side of the circuit board corresponding to the penetrating portion and illuminating the hands and the display unit; and a reflector disposed between the front panel and the circuit board, The body has an opening that allows the illumination light from the light source to pass through to the center of rotation of the pointer at a position corresponding to the penetrating portion, and is located outside the opening.
A first reflector that faces the light source in the axial direction of the drive shaft and reflects the illumination light to the outer periphery; and the front panel extends outward with a space appropriately surrounding the light source. Is provided to the front panel side, a light guide is not required for illuminating the front panel and the pointer, and an inexpensive and lightweight instrument device can be provided.

The present invention also provides a circuit board, an instrument body disposed behind the circuit board and having a drive shaft extending forward through the circuit board, and a rotation center mounted on the tip end of the drive shaft. A front panel having a pointer that emits light by receiving more light supply, a display unit disposed between the pointer and the circuit board, and a display unit corresponding to the pointer and a through-hole that exposes the center of rotation of the pointer, A first light source arranged on the front side of the circuit board corresponding to the through portion and illuminating the pointer;
A second light source that is disposed outside the first light source and on the front side of the circuit board that is closer to the drive shaft than the display unit and illuminates the display unit; the front panel and the circuit board; A reflector disposed between the apertures, wherein the reflector passes illumination light from the first light source toward the center of rotation of the pointer, and is positioned outside the aperture.
A first reflector that faces the second light source in the axial direction of the drive shaft and reflects illumination light from the second light source in an outer peripheral direction; and the front panel so as to surround the second light source. Has a second reflector that extends outwardly with an appropriate space and reflects the illumination light from the second light source toward the front panel side, so that the light guide can be used to illuminate the front panel and hands. It is possible to provide an instrument device that can be unnecessary, that is inexpensive, and that can achieve weight reduction.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a meter device according to a first embodiment of the present invention.

FIG. 2 is a plan view showing an assembled state of FIG. 1;

FIG. 3 is a perspective view showing a reflector alone.

FIG. 4 is a sectional view taken along line AA of FIG. 2;

FIG. 5 is a sectional view taken along the line BB of FIG. 2;

FIG. 6 is a plan view showing a second embodiment of the present invention.

FIG. 7 is a sectional view showing a third embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Circuit board 2 Drive shaft 3 Instrument main body 4 Indicator 5 Front panel 6 Light source 7 Reflector 51 Ground color part 52 Display part 61 First light source 62 Second light source 71 Peripheral wall part 72 Extension part 73 Opening 74 Cylindrical part 75 First reflecting portion 76 Opening portion 77 Second reflecting portion 78 Cylindrical portion

Claims (15)

(57) [Claims] 1. A circuit board, an instrument body disposed on the circuit board and having a drive shaft extending forward, a pointer mounted on a tip end side of the drive shaft, and a pointer disposed between the pointer and the circuit board. A front panel having a display unit corresponding to the pointer, a light source arranged at a front side of the circuit board closer to the drive shaft than the display unit and illuminating at least the display unit; the front panel and the circuit board And a reflector disposed between the drive shaft and the drive shaft in the axial direction of the drive shaft.
A first reflector facing the light source and reflecting the illumination light from the light source to the outer periphery, and the front panel is extended appropriately to the outside so as to surround the light source, and extends outward to extend the illumination light. A second reflecting portion for reflecting light toward the front panel side. Wherein said instrument body is disposed behind the circuit board so that the drive shaft penetrates said circuit board, said pointer is configured to emit light receiving light supplied from the rotation center The front panel has a penetrating portion that exposes the center of rotation of the pointer, the light source is disposed at a position corresponding to the penetrating portion, and the reflector is located at a position corresponding to the penetrating portion. The instrument device according to claim 1, further comprising an opening for allowing the pointer to pass through the center of rotation of the pointer. 3. A circuit board, an instrument main body disposed behind the circuit board and having a drive shaft extending forward through the circuit board, and light supplied from the center of rotation mounted on the tip end of the drive shaft. A front panel having a pointer that emits light upon receipt of the light, a display unit disposed between the pointer and the circuit board, the display unit corresponding to the pointer, and a through unit exposing a rotation center of the pointer, and the through unit A light source arranged on the front side of the circuit board corresponding to the light source for illuminating the hands and the display unit, and a reflector disposed between the front panel and the circuit board, wherein the reflector is An opening through which the illumination light from the light source passes toward the center of rotation of the pointer at a position corresponding to the penetrating portion ;
A first reflecting portion that faces the light source in the axial direction and reflects the illumination light to the outer periphery; and the front panel extends outside to an appropriate space so as to surround the light source, and extends the illumination light to the front panel. A second reflecting portion that reflects to the side. 4. The instrument device according to claim 1, wherein a plurality of the light sources are arranged on a concentric circle around the drive shaft. 5. A circuit board, an instrument body disposed behind the circuit board, a drive shaft extending through the circuit board and extending forward, and a light supply mounted on a tip side of the drive shaft and provided from a rotation center. A front panel having a pointer that emits light upon receipt of the light, a display unit disposed between the pointer and the circuit board, the display unit corresponding to the pointer, and a through unit exposing a rotation center of the pointer, and the through unit A first light source arranged on the front side of the circuit board corresponding to the first light source and illuminating the hands, and a front side of the circuit board outside the first light source and closer to the drive shaft than the display unit. A light source for illuminating the display unit, and a reflector disposed between the front panel and the circuit board, wherein the reflector is located at a position corresponding to the penetrating portion. The illumination light from the light source to the center of rotation of the pointer An opening through which the light passes, and a first reflecting portion that is located outside the opening and faces the second light source in the axial direction of the drive shaft and reflects illumination light from the second light source to the outer periphery. A front surface panel and a second reflector that extends outwardly with an appropriate space so as to surround the second light source and reflects illumination light from the second light source toward the front panel. Instrumentation device characterized by the following. 6. The reflector according to claim 5, wherein the reflector has a partition extending around the opening and extending in the axial direction of the drive shaft to partition the first light source and the second light source. Instrumentation device as described. 7. The instrument device according to claim 6, wherein the first reflection part is provided in the partition part. 8. The apparatus according to claim 5, wherein a plurality of the first and second light sources are arranged on a concentric circle centered on the drive shaft. Instrument equipment. 9. The instrument device according to claim 6, wherein the first light source and the second light source have different emission colors. 10. The device according to claim 1, wherein the first reflecting portion has a slope or a curved surface inclined at a predetermined angle with respect to the front panel. Instrumentation equipment. 11. The instrument device according to claim 10, wherein the inclined surface or the curved surface is formed in a conical shape surrounding the drive shaft. 12. The device according to claim 1, wherein the second reflecting portion has an inclined surface or an inclined curved surface that is closer to the front panel as going outward. Instrumentation equipment. 13. The slanted surface or the slanted curved surface is formed such that the slant angle with respect to the front panel becomes gradually larger toward the outside.
Instrumentation device as described. 14. The instrument device according to claim 1, wherein the reflector is made of a white synthetic resin material. 15. The instrument device according to claim 1, wherein a wall surface of the reflector is a glossy surface.