JP2004061326A - Pointer-type measuring instrument - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pointer-type measuring instrument wherein illumination design of a measurement value display part is given a stereoscopic effect by effectively using a translucent member, in a pointer-type measuring instrument to be mounted on a movable body such as motorcycles, automobiles, watercrafts, and aircrafts. <P>SOLUTION: This instrument is equipped with a pointer 4 moving in proportion to a measured magnitude, a display part 5 having a measured value display part 51 comprising a numeral part 51a and a scale part 51b corresponding to the pointer 4, the translucent member 6 of the scale part 51b disposed on the front side of the display part 5, and a light source 9 disposed behind the display part 5. The scale part 51b is formed so as to have light transmissivity for transmitting the light of the source 9 to the front side, and the translucent member 6 is provided with a recessed part 64 for emitting light by receiving light transmitted by the scale part 51b. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a pointer-type instrument mounted on a moving body such as a motorcycle, a car, a ship, and an aircraft.
[0002]
[Prior art]
For example, as a pointer-type instrument mounted on a car, the pointer consists of a pointer that rotates according to the amount of measurement, and a display panel that has a scale and characters and other measurement value display sections that correspond to the pointer. A pointer-type instrument that displays a measurement value by pointing a part is known. In this case, the measurement value display part is arranged in an arc shape according to the movement of the pointer.
[0003]
In this type of pointer-type instrument, for example, as shown in Japanese Patent Application Laid-Open No. 2002-56897, an arc-shaped light-transmitting member that covers a measurement value display portion on a display plate is provided, It is known that a light source for transmitting and illuminating the measurement value display unit is arranged behind the display unit, and the measurement value display unit that emits light by receiving light from the light source is visually recognized through a light transmitting member, thereby improving the appearance during illumination. ing.
[0004]
[Problems to be solved by the invention]
However, since the light emission image of the measurement value display unit that emits light by transmitted light is only seen through the light transmitting member, the illumination design of the measurement value display unit has to be planar. There was room for improvement in this regard.
[0005]
The present invention has been made in view of this point, and a main object thereof is to provide a pointer-type instrument capable of effectively utilizing a light-transmitting member and giving a three-dimensional appearance to a lighting design of a measurement value display section. Is what you do.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the present invention includes a pointer that operates according to a measured amount, a display plate having a measurement value display unit corresponding to the pointer, and a measurement value display unit that is disposed in front of the display plate. A light-transmitting member for covering, and a light source disposed behind the display panel, wherein the measurement value display portion is formed to have a light-transmitting property to transmit light of the light source to a front side, and the light-transmitting member has the light-transmitting member. A concave portion that receives light transmitted through the measurement value display portion and emits light is formed.
[0007]
Further, the present invention is characterized in that a diffusion processing section is provided on the bottom surface of the recess.
[0008]
Further, the invention is characterized in that the concave portion is provided in a shape corresponding to the measured value display section.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
FIGS. 1 to 3 show a first embodiment of the present invention. Hereinafter, a case where the first embodiment of the present invention is applied to a pointer-type instrument mounted on, for example, an automobile will be described with reference to these drawings. 1 is a front view of a pointer-type instrument according to a first embodiment of the present invention, FIG. 2 is a sectional view taken along line AA of FIG. 1, and FIG. 3 is a sectional view taken along line BB of FIG.
[0010]
In FIGS. 1 and 2, the pointer-type instrument according to the present embodiment is rotationally driven by a circuit board 1, a driving device 3 which is conductively mounted on the circuit board 1 and has a rotating shaft 2 extending forward, and a rotating shaft 2. A pointer 4, a display plate 5 located behind the pointer 4 and disposed on the circuit board 1, a translucent member 6 disposed in front of the display plate 5, a pointer 4 and the display plate 5, A return plate 7 for exposing a required portion of the light transmitting member 6, a light source 8 for a pointer for illuminating the hands 4, a light source 9 for a display plate for illuminating the display plate 5, a display plate 5 and the circuit board 1 And the frame body 10 disposed between them.
[0011]
The circuit board 1 is made of, for example, a hard circuit board in which a wiring pattern (not shown) is formed on a glass epoxy base material, and driving means (not shown) for driving and controlling the light sources 8 and 9, for example, the driving device 3. ) And various circuit components (not shown) such as resistors and capacitors are electrically connected to the wiring pattern.
[0012]
The driving device 3 is composed of a movable magnet type instrument or a stepping motor, and its main part is mounted behind the circuit board 1 so that the rotating shaft 2 penetrates the circuit board 1 and is appropriately connected by conducting means such as soldering. It is electrically connected to the wiring pattern (the driving means).
[0013]
The pointer 4 is made of a light-transmitting synthetic resin, is connected to the tip of the rotating shaft 2, and has a light-shielding cover attached to the center of rotation. The pointer 4 is a light-emitting pointer that receives light from the light source 8 and emits light.
[0014]
The display plate 5 has an arc-shaped array shape along the rotation motion trajectory of the hands 4, and a measurement value display unit 51 including a numeral (character) unit 51 a to be indicated by the indicating unit 41 of the hands 4 and a scale unit 51 b. And a background section 52 that forms the background of the measurement value display section 51.
[0015]
As shown in FIG. 3, the measured value display section 51 and the background section 52 are formed on a display panel by using a white translucent ink for the measured value display section 51 and a black light-shielding ink for the background section 52, respectively. 5 is formed by printing on the front side of a light-transmitting base material 53 serving as a base material. On the back side of the base material 53, a reflective layer 54 is formed by printing, and the reflective layer 54 is formed of a white ink having a high light reflectance, similarly to the black light-shielding ink constituting the background portion 52. It is uniformly formed in the region of the base material 53 excluding the corresponding range of the display unit 51.
[0016]
Each of the printed layers forming the measured value display section 51, the background section 52, and the reflective layer 54 is formed by printing using means such as screen printing. The reflective layer 54 can be formed on the back surface, and can be formed on the front surface of the base material 53 and behind the background portion 53.
[0017]
In addition, the measured value display section 51 constitutes a pointer type display section D corresponding to the measurement display object in combination with the pointer 4, and in the case of the present embodiment, the pointer type display section D is a pointer type display comprising a speedometer. Although only the portion D is shown, a combination type meter including a tachometer, a fuel gauge, a water temperature meter, a voltmeter, and the like may be incorporated into the combination meter in addition thereto. A translucent member 6 may be provided for each time.
[0018]
The translucent member 6 is made of, for example, a colorless and transparent acrylic resin, surrounds the operating range of the hands 4, and is formed in an arc shape or a ring shape along the arrangement shape of the measurement value display unit 51, and is displayed as shown in FIG. It has a base portion 61 located between the plate 5 and the return plate 7, and an exposed portion 62 formed continuously from the base portion 61 toward the hands 4 and exposed from the return plate 7. At this time, the exposed portion 62 is disposed on the front side of the display panel 5 so as to cover the scale portion 51b of the measured value display portion 51.
[0019]
The exposed portion 62 has an inclined surface 63 and a concave portion 64 having a shape corresponding to the graduation portion 51b. The inclined surface 63 is in front of the exposed portion 62 so as to be inclined toward the display plate 5 as the distance from the dial plate 7 increases. The concave portion 64 is formed on the side outer wall surface, and the entire shape of the concave portion 64 corresponds to the shape of the scale portion 51b. The bottom portion 65 faces the scale portion 51b at a predetermined interval, and the side wall portion 66 connected to the bottom portion 65. And the side wall is inclined in a divergent shape toward the scale 51b.
[0020]
The return plate 7 exposes the exposed portion 62 of the light transmitting member 6, the pointer 4 surrounded by the exposed portion 62, and the numeral 51 a of the measurement value display portion 51, and conceals other necessary areas. An opening 71 is provided at a location corresponding to the base 61.
[0021]
The light source 8 is composed of, for example, a chip-type light emitting diode that emits red light. A plurality of the light sources 8 are arranged near the center of rotation of the hands 4, and are housed in a tubular portion of the frame 10, which emits the hands 4 in red. is there.
[0022]
The light source 9 is composed of, for example, a chip-type light emitting diode that emits white light. A plurality of the light sources 9 are arranged behind the display panel 5 so as to surround the outer periphery of the light source 8. This is a light emitter that emits white light on the measured value display section.
[0023]
The frame 10 is made of, for example, a white synthetic resin, and functions as a holder for holding the display panel 5 and the light guide member 11, a function as a housing for housing the light sources 8 and 9, and the light of the light sources 8 and 9. It has a function as a reflector that reflects light forward.
[0024]
The frame body 10 accommodates the light source 8 and supplies the light of the light source 8 to the center of rotation of the pointer 4. The cylindrical body 101 is inclined toward the display plate 5 so as to surround the cylindrical part 101. A first reflecting portion 102 extending and facing the light source 9, and a dish-shaped annular wall facing the first reflecting portion 102 and the display plate 5 and approaching the display plate 5 as the distance from the rotation axis 2 increases. And two reflecting portions 103.
[0025]
In addition, the first reflecting portion 102 constitutes a reflecting surface that radially reflects light from the light source 9 mainly toward the outer periphery, and the second reflecting portion 103 is reflected to the outer periphery through the first reflecting portion 102. And a reflection surface that reflects the reflected light toward the display panel 5 and the light transmitting member 6.
[0026]
The space S surrounded by the first and second reflecting portions 102 and 103, the cylindrical portion 101, and the reflecting layer 54 of the display panel 5 transmits the light of the light source 9 to the measured value display portion 51 and the light transmitting member 6. The lighting unit L has a function as an illumination room for guiding, and the illumination unit L for illuminating the measurement value display unit 51 is configured by the illumination room (space S) and the light source 9 arranged in the illumination room. At this time, the reflection layer 54 of the display panel 5 has a function of causing the light of the light source 9 to be re-reflected into the illumination room by the reflection layer 54 to increase the illumination efficiency.
[0027]
In such a configuration, when the light source 8 emits light, the light illuminates the hands 4 and illuminates the hands 4 in red. When the light source 9 emits light, the light is reflected and diffused through the illumination room (space S), and this light passes through the numeral 51a and the scale 51b of the measurement value display unit 51, so that the numeral 51a, The scale portion 51b emits white light.
[0028]
At this time, the light transmitted through the scale portion 51 b reaches the concave portion 64 of the light transmitting member 6 and passes through the bottom portion 65 to the inclined surface 62 side, and at the same time, the side wall portion 66 or the boundary between the side wall portion 66 and the bottom portion 65 (corner). Portion), the viewer sees a concave portion 64 that emits three-dimensional light in combination with the graduation portion 51b that receives light from the light source 9 and emits light in the back of the light transmitting member 6 from the observer. , The scale portion 51b has a three-dimensional structure and is visually recognized. Further, the light that has reached the inside of the concave portion 64 is also diffused around the concave portion 64, whereby the periphery of the concave portion 64 dimly emits light with low brightness, thereby forming a novel and unique lighting design.
[0029]
As described above, in the present embodiment, the indicator 4 that operates according to the measurement amount, the display plate 5 that has the measured value display unit 51 including the numeral unit 51a and the scale unit 51b corresponding to the indicator 4, and the display plate 5 5 includes a light transmitting member 6 disposed on the front side of the display panel 5 and covering the scale 51b, and a light source 9 disposed behind the display panel 5. The scale 51b transmits light of the light source 9 to the front side. By providing the light transmitting member 6 with the concave portion 64 that receives the light transmitted through the scale portion 51b and emits light, the light transmitting member 6 can be effectively used to make the lighting design of the scale portion 51b three-dimensional. Can give a feeling.
[0030]
In the present embodiment, the shape of the concave portion 64 is made to correspond to the shape of the scale portion 51b, so that the shape matching between the concave portion 64 and the scale portion 51b can be improved, and the light source 9 can be turned on or off regardless of the lighting state. Thus, the visibility and discrimination of the scale portion 51b can be favorably maintained. In addition, for example, when the light source 9 is turned on in a state where external light is applied to the light transmitting member 6 in the daytime or the like, the light emission feeling of the concave portion 64 may be lost, and it may be difficult to recognize the scale portion 51b. In the embodiment, the scale portion 51b corresponding to the concave portion 64 is formed in a color (white) different from the background portion 52 (black), so that the contrast of the scale portion 51b is not extremely reduced. Is increasing.
[0031]
In the present embodiment, the concave portion 64 is formed corresponding to the scale portion 51. However, the concave portion 64 may be provided in a position corresponding to the numeral portion 51a in a shape corresponding to the numeral portion 51a.
[0032]
Further, the shape of the light transmitting member 6 is not limited to an arc shape or a ring shape, and the shape is arbitrary as long as it is arranged so as to cover the measurement value display section 51.
[0033]
FIG. 4 is an enlarged sectional view of a concave portion showing a second embodiment of the present invention. In this embodiment, a diffusion processing portion 67 made of a grained portion is provided at the bottom 65 of the concave portion 64. With this configuration, light traveling forward can be diffused through the bottom portion 65, and the bottom portion 65 facing the scale portion 51b can be almost uniformly surface-emitted, whereby the visibility and discrimination of the scale portion 51b can be improved. Can be improved.
[0034]
In the present embodiment, the diffusion processing section 67 including the grain processing section is provided, but the diffusion processing section 67 may be a diffusion layer formed by printing or painting as long as it has a diffusion action.
[0035]
【The invention's effect】
As described above, according to the present invention, it is possible to provide a pointer-type instrument capable of achieving an initial object, effectively utilizing a light-transmitting member, and giving a three-dimensional appearance to a lighting design of a measurement value display section. Can be.
[Brief description of the drawings]
FIG. 1 is a front view of a meter device according to a first embodiment of the present invention.
FIG. 2 is a sectional view taken along line AA of FIG.
FIG. 3 is a sectional view taken along line BB of FIG. 1;
FIG. 4 is an enlarged sectional view of a concave portion according to a second embodiment of the present invention.
[Explanation of symbols]
REFERENCE SIGNS LIST 1 circuit board 2 rotating shaft 3 drive device 4 pointer 5 display plate 6 translucent member 7 return plate 7
8, 9 light source 10 frame 51 measured value display section 51a numeral section 51b scale section 52 background section 53 base material 54 reflective layer 61 base section 62 exposed section 63 inclined surface 64 concave section 65 bottom section 66 side wall section 67 diffusion processing section 101 cylindrical section 102 first reflector 103 second reflector L illumination means S space

Claims (3)

A pointer that operates according to the measured amount,
A display plate having a measurement value display unit corresponding to the pointer,
A light-transmitting member disposed on the front side of the display plate and covering the measurement value display unit;
A light source disposed behind the display board,
The measurement value display unit is formed to be light-transmissive to transmit the light of the light source to the front side,
A pointer-type instrument, wherein a recess is formed in the translucent member to receive and transmit light transmitted through the measurement value display unit. The pointer-type instrument according to claim 1, wherein a diffusion processing unit is provided at a bottom of the concave portion. The pointer-type instrument according to claim 1, wherein the concave portion is provided in a shape corresponding to the measurement value display section.

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