JP4265514B2 - Vehicle indicator instrument - Google Patents

Description

  The present invention relates to a vehicular pointer instrument having a pointer for luminescent display.

  2. Description of the Related Art In recent years, various indication methods for a vehicle pointer instrument have been proposed in order to provide a novel display with a good appearance, and one of them is related to a vehicle indicator instrument having a pointer for light emission display.

  For example, a pointer instrument has been proposed in which a fluorescent layer having a narrow width is formed on the surface of a pointer, and this fluorescent layer is irradiated with ultraviolet light (see Patent Document 1).

  This is a pointer instrument in which a fluorescent layer with a width narrower than the width of the pointer is formed on the surface of the pointer along the longitudinal direction of the pointer, and a light source that emits ultraviolet rays is disposed in the pointer instrument case on the surface side of the pointer. is there. By irradiating the fluorescent layer with ultraviolet rays emitted from the light source, the fluorescent layer is fluorescently displayed.

Thereby, since the pointer can be visually recognized as an extremely fine pointer, the pointer can be seen sharply, that is, the pointer can be made thin and long. Therefore, it is possible to realize a guideline for performing a novel light-emitting display with a good appearance.
Japanese Utility Model Publication No. 1-179220

  However, the pointer instrument according to Patent Document 1 has a problem of increasing the size in the front-rear direction because the light source that irradiates the fluorescent layer is disposed on the front side of the pointer. In addition, the positional relationship between the light source and the fluorescent layer changes depending on the rotation position of the pointer, and the fluorescence intensity of the fluorescent layer may change.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a vehicular pointer instrument having a pointer that can display a novel light-emitting display without increasing the size of the vehicular pointer instrument. To do.

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

The pointer instrument for a vehicle according to claim 1 emits light from a dial, a pointer that rotates along the surface of the dial and has translucency, and a periphery outside a region where the pointer rotates. Irradiating means for making this light incident on the pointer from the side surface of the pointer, and the pointer has a concave portion extending in the longitudinal direction of the pointer on the back surface of the colorless and transparent pointer, and the short direction of the concave portion The width of is set narrower than the width in the short direction of the pointer, and a colored layer or a fluorescent layer is formed on the surface of the recess, and reflects the light of the irradiation means incident from the side of the pointer toward the surface of the pointer The reflecting surface is formed in the pointer using a recess .

In this configuration, the pointer having translucency is visually recognized as a light-emitting display by causing light to be incident from the side surface of the pointer and reflecting the light toward the surface of the pointer by the reflecting surface. As a result, it is not necessary to place a light source on the front side of the pointer as in the prior art, and it is possible to realize a pointer that can display a novel light emitting display without increasing the size of the pointer instrument for the vehicle. Further, in this configuration, since the reflecting surface is formed in the pointer using the recess formed on the back surface of the pointer, the reflecting surface can be easily formed. Thereby, the above-described effects can be easily obtained. Further, in this configuration, since the width in the short direction of the concave portion is narrower than the width in the short direction of the pointer, the pointer emits light and displays narrower than the width of the pointer due to the reflecting surface formed by the concave portion. As a result, the pointer can realize a novel light-emitting display that looks even more fine as a fine pointer. In general, the width of the pointer is about 2.5 mm. If the width is about 1 mm as a very fine pointer, the pointer may be deformed in the manufacturing process. However, in this configuration, a pointer having a general level of pointer width can be visually recognized as an extremely fine pointer having a width of 1 mm. In addition, in this configuration, since a colored layer or a fluorescent layer is formed on the surface of the concave portion, the light emission display by the reflecting surface formed by the concave portion is colored or fluorescent light is emitted, so that a novel light emission that looks better. It is possible to realize a guideline for displaying.

In the vehicular pointer instrument according to claim 1 , the cross-sectional shape perpendicular to the longitudinal direction of the pointer of the concave portion is an inverted V shape, and the light of the irradiation means incident from the side surface of the pointer is reflected in the light incident direction. In contrast, the light is reflected toward the surface of the pointer in a substantially perpendicular direction.

  In this configuration, the reflective surface reflects the light from the irradiating means in a substantially right-angle direction, so that the light emission display on the reflection surface is clearly visible without blurring and spreading, and it also realizes a pointer that can display a novel and light-emitting display. it can.

The vehicle pointer instrument according to claim 2 , wherein the pointer extends in opposite directions with respect to the rotation center of the pointer, and the recess extends to one side with respect to the rotation center of the pointer and a portion extends to the other side. It is set as the structure provided in both these parts.

  In this configuration, the pointer extends in both directions of the rotation center, and the concave portion is provided at both portions of the pointer that extend in both directions. As a result, the pointer is visually recognized as a light-emitting display by the reflecting surface formed by the concave portions of the two parts, so that it is possible to realize a pointer that performs a novel light-emitting display that looks better.

The vehicle pointer instrument according to claim 3 is provided with a boss portion that is formed so that the pointer covers at least the rotation center region of the pointer and does not have translucency, and a diffusion treatment is performed on the surface of the boss portion to perform irradiation. The means irradiates the surface of the boss part.

  In this configuration, the pointer includes a boss portion that covers the rotation center region of the pointer, the surface of the boss portion is subjected to diffusion treatment, and the irradiation unit irradiates the surface of the boss portion. As a result, the surface of the boss portion is lit and displayed in a cloudy color, so the appearance of the pointer can be further improved.

The pointer instrument for a vehicle according to claim 4 is configured such that the irradiation means irradiates the surface of the dial.

  In this configuration, since the irradiating means irradiates the dial surface, the illumination intensity gradually decreases toward the center of rotation of the pointer, forming a so-called circular gradation. Thereby, since the dial which is the background of the pointer is illuminated in gradation, the appearance of the pointer can be further improved.

According to a fifth aspect of the present invention, the indicator device for the vehicle guides the light source disposed behind the dial and the light of the light source to the periphery outside the region where the pointer rotates and emits light from the periphery. The light guide part which makes this light inject into a pointer from the side surface of this invention is provided.

  In this configuration, the irradiating means includes a light source disposed behind the dial, and a light guide unit that guides light from the light source to the outer periphery of the rotation region of the pointer and makes the light enter the pointer from the outer periphery. Thereby, the above-described effects can be realized with a simple configuration.

According to a sixth aspect of the present invention, the light guide unit guides the light from the light source to the entire periphery outside the region where the pointer rotates, and emits the light from the entire periphery to enter the pointer from the side surface of the pointer. The configuration.

  In this configuration, the light guide unit guides the light from the light source to the entire periphery outside the rotation region of the pointer and emits the light from the entire periphery so as to enter the pointer from the side surface of the pointer. As a result, the light from the light guide is uniformly emitted toward the center of rotation of the pointer, and the intensity of light incident on the pointer from the side surface of the pointer can be easily changed regardless of the rotation angle position of the pointer. I can not. That is, even if the pointer is rotated, the light emission intensity can be prevented from changing, and thus, a stable visibility can be obtained easily.

The vehicular pointer instrument according to claim 7 is configured to form a scale on the light guide portion.

  In this configuration, the scale is formed on the light guide section. Thereby, since the scales arranged on the outer periphery of the pointer are displayed in three dimensions, the appearance of the pointer can be further improved.

  Hereinafter, an example in which the pointer instrument for a vehicle according to the present invention is applied to a combination meter mounted on an automobile will be described with reference to the drawings.

(First embodiment)
FIG. 1 is a front view of a combination meter 1 which is a pointer instrument for a vehicle according to a first embodiment of the present invention. The vertical direction indicated by the arrow in FIG. 1 is the same as the vertical direction of the automobile.

  2 is a cross-sectional view taken along line II-II in FIG.

  FIG. 3 is an enlarged view of a portion III in FIG.

  4 is a cross-sectional view taken along line IV-IV in FIG.

  5 is a cross-sectional view taken along line VV in FIG.

FIG. 6 is a circuit configuration diagram illustrating an electrical circuit configuration of the combination meter 1 according to the first embodiment of the present invention. The combination meter 1 which is a vehicle pointer instrument is disposed in front of a driver's seat of an automobile and relates to the automobile. Various information is displayed and is visually recognized by the driver from the upper side of the sheet of FIG.

  As shown in FIG. 1, the combination meter 1 according to the present embodiment constitutes a speedometer that displays a traveling speed.

  The combination meter 1 includes a dial 2 for displaying a traveling speed and allowing the driver to visually recognize the dial. The dial 2 is formed of a translucent material, for example, a plate material such as a transparent polycarbonate resin.

  On the front or back surface of the dial 2, the background portions of the letters 21 and the scales 22 are frosted so that the letters 21 (including numbers) and the scales 22 are translucent. The film is formed by printing, hot stamping, or the like so as to be in a state of low translucency.

  As shown in FIG. 2, the dial 2 is provided with a through hole 23 through which a shaft 41 of the movement 4 to be described later is inserted, and behind the dial 2 (on the right side indicated by the arrow in FIG. 2) is a reflector. 8, a movement 4, a light emitting diode 5, a light emitting diode 6 as a light source, and a printed circuit board 9 are disposed. The printed circuit board 9 forms an electric circuit part of the combination meter 1, and the movement 4 and the light emitting diodes 5 and 6 are mounted on the printed circuit board 8.

  The movement 4 is composed of, for example, a cross coil actuator or a stepping motor, and rotates the shaft 41 by an angle corresponding to an external electric signal (vehicle speed signal in the present embodiment). The shaft 41 extends to the surface side, that is, the left side indicated by the arrow in FIG. 2 through the through-hole 23 of the dial 2, and the pointer 3 is fixed to the tip thereof.

  The reflector 8 guides, for example, white light from the light emitting diode 5 to the dial 2. Here, the character 21 and the scale 22 (FIG. 1) are configured so as to be lit and displayed in white, for example, and the background portion of the character 21 and the scale 22 is configured to be displayed in blue, for example.

  As shown in FIGS. 1 and 2, the light guide 7 is formed along the entire outer periphery of the dial 2, extends from the vicinity of the light emitting diode 6 to the surface of the dial 2, and is on the surface of the dial 2. Toward the center of the dial 2 (the center of rotation of the pointer 3), and extends outward from the region in which the pointer 3 rotates. The light guide unit 7 is formed of a colorless and transparent acrylic resin or the like, and has a reflection surface 71 that reflects, for example, white light from the light emitting diode 6 to the pointer 3.

  That is, the light guide unit 7 guides the white light from the light emitting diode 6 to the pointer 3, and the light guide unit 7 and the light emitting diode 6 as a light source constitute an irradiation unit.

  The light guide unit 7 is configured to uniformly emit white light from the plurality of light emitting diodes 6 arranged toward the center of rotation of the pointer 3 (center of the dial 2). That is, the light guide unit 7 is configured such that the intensity of light emitted from the light guide unit 7 toward the rotation center of the pointer 3 becomes the same depending on the position of emission.

  Further, the light emitting diode 6 is disposed so that the light guide 7 can emit white light from the light emitting diode 6 uniformly toward the center of the dial 2. That is, the light emitting diodes 6 are arranged so that the intensity of the light emitted from the light guide unit 7 toward the rotation center of the pointer 3 becomes the same depending on the emission position.

  The portion from which the light guide 7 emits light is disposed concentrically with respect to the center of rotation of the pointer 3.

  As will be described later, these are configurations for preventing the light emission intensity of the pointer 3 from changing at any rotation angle position.

  The pointer 3 is configured to emit light by this irradiation light. Specifically, as shown in FIG. 3, the pointer 3 has an opaque boss portion 32 formed so as to cover the through hole 23 of the dial 2, which is the rotation center region of the pointer 3, and the boss portion 32. It comprises a colorless and transparent pointer main body 31 extending in opposite directions.

  The pointer main body 31 is made of, for example, a colorless and transparent acrylic resin. On the back surface 314 of the pointer main body 31, a recess 311 having an inverted V-shaped cross section shown in FIG. 4 extends in the longitudinal direction of the pointer main body 31 as indicated by a broken line in FIG. 3. In FIG. 4, the angle M1 of the recess 311 is set to approximately 90 degrees, and the angle M2 of the recess 311 is set to approximately 45 degrees. Further, the width L2 of the concave portion 311 in the short direction is set to be narrower than the width L1 of the pointer main body 31 in the short direction.

  The reflecting surface 311 a is formed in the pointer main body 31 using the recess 311. The reflection surface 311 a reflects the white light of the light-emitting diode 6 that is guided to the light guide 7 and incident from the side surface 313 of the pointer main body 31 to the surface 315. For example, a red colored layer 312 is formed on the surface of the recess 311.

  The boss portion 32 is formed of, for example, white resin or metal. The pointer main body 31 and the boss 32 may be formed by integral molding, but may be separate members. As shown in FIG. 5, the surface 32 a of the boss portion 32 is formed in a conical shape, and the surface 32 a is subjected to a diffusion treatment such as embossing.

  As shown in FIG. 2, the housing of the combination meter 1 includes a transparent Freon and a cover 10 that cover the surface side of the dial 2 and the pointer 3 (the left side indicated by the arrow in FIG. 2), and the reflective surface of the light guide unit 7. The design plate 11 and the case 12 cover the surface side of 71.

  The electric circuit configuration of the combination meter 1 according to the present embodiment described above will be described with reference to FIG.

  The control device 13 composed of a microcomputer or the like is always supplied with power from the battery 16, and the ignition switch 15 is connected so as to be able to detect its operation position (off position, on position) to detect the traveling speed of the vehicle. A vehicle speed sensor 14 and a sensor, switch, etc. (not shown) are connected so that these signals can be input.

  Further, the movement 4 and the light emitting diodes 5 and 6 driven by the control device 13 in accordance with the detection signal from the vehicle speed sensor 14 are also connected to the control device 13.

  The operation of the combination meter 1 according to the first embodiment of the present invention configured as described above will be described below.

  When the ignition switch 15 is turned on by the driver, as shown in FIG. 6, the control device 13 detects it and starts operation, lights up the light-emitting diodes 5 and 6, and drives the movement 4. That is, the control device 13 calculates the vehicle speed of the vehicle based on the output signal from the speed sensor 14 and drives the movement 4 so as to rotate the shaft 41 by an angle corresponding to the calculated vehicle speed.

  Hereinafter, the illumination of the dial 2 by the light emitting diodes 5 and 6 and the light emission display of the pointer 3 will be described in detail.

  The white light of the light-emitting diode 5 that has been turned on is guided to the reflector 8 and is uniformed by a diffusion plate (not shown) to transmit and illuminate the dial 2. As a result, the characters 21 and the scales 22 are lit and displayed in white, and the background portions of the characters 21 and the scales 22 are displayed in blue.

  On the other hand, the white light of the lit light-emitting diode 6 is incident on the colorless and transparent light guide section 7 and reflected by the reflection surface 71 of the light guide section 7 according to the optical paths indicated by arrows P and Q in FIGS. Thus, the light is uniformly emitted toward the center of the dial 2 (the center of rotation of the pointer 3). Of the light in the optical path indicated by the arrow P in FIG. 1, the light in the optical path indicated by the arrow P <b> 1 in FIG. 1, which is a component perpendicular to the pointer main body 31, enters the side surface 313 of the pointer main body 31.

  Here, the intensity of the light in the optical path indicated by the arrow P is constant regardless of the position from which the light guide unit 7 emits light, and the portion from which the light guide unit 7 emits light is at the center of rotation of the pointer 3. On the other hand, they are arranged concentrically. As a result, the sum of the components perpendicular to the pointer main body 31 (corresponding to the light in the optical path indicated by the arrow P1 in FIG. 1) of the light in the optical path indicated by the arrow P is determined at which rotation angle position the pointer 3 is located. No change.

  That is, the total sum of the light intensities incident from the side surface 313 of the pointer main body 31 does not change even if it is rotated, so that stable visibility is obtained.

  The light emitted from the light guide 7 that has entered the pointer body 31 from the side surface 313 of the pointer body 31 is reflected by the reflecting surface 311a of the pointer body 31 according to the optical path indicated by the arrow P1 in FIG. The light is emitted from the surface 315 of the pointer main body 31. Thus, the pointer main body 31 emits light in red on the surface 315 of the pointer main body 31 in the visual recognition area A through which the light reflected by the reflecting surface 311a is transmitted.

  Here, since the angle M1 of the recess 311 is set to approximately 90 degrees and the angle M2 of the recess 311 is set to approximately 45 degrees, the reflection angle N is approximately 90 degrees, and the viewing area A is short in the short direction. The width L3 is substantially equal to the width L2 of the recess 311 in the short direction. In addition, since the width L2 in the short direction of the recess 311 is set to be narrower than the width L1 in the short direction of the pointer main body 31, the pointer main body 31 in FIG. A red light is displayed in the viewing area A having a width L3 in the short direction narrower than the width L1 in the direction.

  That is, in FIG. 3, the pointer main body 31 emits light in red in the visual recognition area A, but does not emit light in areas other than the visual recognition area A and is colorless and transparent. Therefore, the background of the characters 21 and scales 22 on the dial 2 The blue color of the part is displayed.

  As a result, the pointer body 31 is visually recognized as an extremely fine pointer because it emits red light only in the viewing area A with the blue background portion of the dial 2 as the background.

  Generally, the width of the pointer main body 31 in the short direction is about 2.5 mm, and if the width is set to about 1 mm as a very fine pointer, the pointer may be deformed in the manufacturing process. On the other hand, according to the present invention, the lower surface 314 of the pointer main body 31 is simply provided with a recess 311 having a width L2 in the short direction narrower than the width L1 in the short direction of the pointer main body 31. It can be visually recognized as an extremely fine pointer.

  Further, the white light of the light-emitting diode 6 that has been lit is incident on the colorless and transparent light guide section 7 according to the optical path indicated by the arrow Q in FIGS. 1 and 2, and is reflected by the reflection surface 71 of the light guide section 7. The light is uniformly emitted toward the surface 32a of the boss portion 32 (the rotation center of the pointer 3). Since the surface 32a has been subjected to a diffusion process such as embossing, the light emitted from the light guide section 7 is diffused and reflected by the surface 32a of the boss section 32 as indicated by the arrows in FIG.

  Thereby, the surface 32a of the boss | hub part 32 can light-emit display with a cloudy color, and can improve the appearance of the pointer | guide 3. FIG.

  In the combination meter 1 that is the vehicle pointer instrument according to the first embodiment of the present invention described above, the light emitted from the light emitting diode 6 is emitted from the light emitting diode 6 by the light emitting diode 6 and the light guide 7 that constitute the irradiation unit. Is guided to the side surface 313 of the pointer main body 31 and the surface 32a of the boss portion 32 from the periphery outside the region where the rotation of the pointer is performed.

  With this configuration, the combination meter 1 does not increase in size in the left-right direction indicated by the arrows in FIG.

  The light incident on the pointer body 31 is reflected toward the surface 315 of the pointer body 31 by the reflecting surface 311a having a width L2 narrower than the width L1 of the pointer body 31, and the light guided to the surface 32a of the boss portion 32 is reflected. The light is diffused and reflected by the surface 32a.

  As a result, the pointer 3 can be visually recognized as an extremely fine pointer, and the surface 32a of the boss portion 32 emits light in a cloudy color. For this reason, it is possible to realize a novel indicator 3 for light-emitting display that looks good without increasing the size of the combination meter 1.

  The color of the background portion of the character 21 and the scale 22 on the dial 2 is made different from the emission color of the visual recognition area A of the pointer main body 31 so that the background portion and the portion other than the visual recognition area A of the pointer main body 31 cannot be distinguished. Therefore, the light emission color of the light emitting diode 6, the colors of the pointer main body 31 and the light guide unit 7, and the color of the coloring layer 312 need not be limited to the above example. However, at least the pointer main body 31 and the light guide portion 7 need to have translucency.

  Further, instead of the colored layer 312, a fluorescent layer that emits fluorescence upon receiving light from the light emitting diode 6 may be formed.

(Second Embodiment)
FIG. 7 is a front view of the combination meter 1 which is a pointer instrument for a vehicle according to the second embodiment of the present invention.

  FIG. 8 is an enlarged view of a part VIII in FIG.

  9 is a cross-sectional view taken along line IX-IX in FIG.

  Unlike the first embodiment, the combination meter 1 that is a vehicle pointer instrument according to the second embodiment of the present invention arbitrarily sets the width L2 of the recess 311 in the short direction. For example, at least in part, the width L2 in the short direction of the recess 311 is set to be the same as the width L1 in the short direction of the pointer main body 31 as shown in FIG.

  Specifically, the width L2 in the short direction of the recess 311 is set to be the same as the width L1 of the pointer main body 31 at both ends of the pointer main body 31 and a part therebetween as shown by the broken line in FIG. In other parts, it is set narrower than the width L1 of the pointer main body 31.

  Thereby, the width L3 in the short direction of the visual recognition area A is set to be substantially the same as the width L2 in the short direction of the recess 311 indicated by a broken line in FIG.

  As a result, since the pointer main body 31 emits red light only in the visual recognition area A shown in FIG. 8 with the blue background portion of the dial 2 as the background, it is visually recognized as a pointer having the shape of the visual recognition area A shown in FIG. The Since other points are the same as those of the first embodiment, description thereof is omitted.

  In other words, in the combination meter 1 that is a vehicle pointer instrument according to the second embodiment of the present invention, the width L2 in the short direction of the recess 311 is set arbitrarily, and can be visually recognized as an arbitrarily shaped pointer at low cost. Can be made.

  As a result, the pointer 3 can be favorably visually recognized as a pointer having an arbitrary shape, and the pointer 3 that displays a novel and light-emitting display can be realized without increasing the size of the combination meter 1.

  Note that the width L2 of the concave portion 311 in the short direction may be set to be the same as the width L1 of the pointer main body portion 31 in all portions of the pointer main body portion 31 in the longitudinal direction.

  FIG. 10 is a cross-sectional view of a recess 311 showing a modification of the recess 311 shown in FIG.

  Further, the reflection surface 311a formed by the recess 311 does not need to be provided in a flat shape as shown in FIGS. 4 and 9, and may be formed in a curved shape, for example, as shown in FIG. . In this case, the light emitted from the light guide 7 that has entered the pointer main body 31 from the side surface 313 of the pointer main body 31 is reflected by the reflective surface 311a by each part of the reflective surface 311a as indicated by an arrow P1 in FIG. The direction is different.

  As a result, the width L3 of the visual recognition area A is wider than the width L2 of the recess 311 in the short direction, unlike the cases shown in FIGS. 4 and 9, and the emission intensity is lower than in the cases shown in FIGS. . Therefore, the visual recognition area A has a blurry and broad shape, and it is possible to realize a novel pointer 3 for light emission display that looks different from the cases shown in FIGS. 4 and 9.

(Third embodiment)
FIG. 11 is a front view of a combination meter 1 that is a pointer instrument for a vehicle according to a third embodiment of the present invention.

  12 is a cross-sectional view taken along line XII-XII in FIG.

  In the combination meter 1 which is a vehicle pointer instrument according to the third embodiment of the present invention, as shown in FIGS. 11 and 12, the light emitted from the light guide 7 is further dial 2 in addition to the above-described embodiment. Is illuminated (the left surface shown by the arrow in FIG. 2).

  Specifically, the light of the light-emitting light emitting diode 6 is incident on the transparent light guide portion 7 and reflected by the reflecting surface 71 of the light guide portion 7 in accordance with the optical path indicated by the arrow R in FIGS. The light is emitted uniformly toward the center of rotation of the pointer 3 (the center of the dial 2). This emitted light illuminates the surface of the dial 2 and the illumination intensity gradually decreases inward from the light guide portion 7 to form a circular so-called gradation indicated by a broken line S in FIG.

  That is, in the combination meter 1 which is a vehicle pointer instrument according to the third embodiment of the present invention, the dial 3 which is the background of the pointer 3 is illuminated in gradation, thereby further displaying the pointer 3 which displays a novel light emitting display that looks better. realizable.

  The scale 22 may not be formed on the dial 2 but may be formed on the light guide portion 7 by printing or engraving. As a result, the scale 22 arranged on the outer periphery of the pointer 3 is displayed in a three-dimensional manner, and the pointer 3 can be realized to display a novel light emission with a good appearance.

  Moreover, in the above-mentioned embodiment, although the light guide part 7 is provided in the outer periphery outside the area | region where the pointer | guide 3 rotates, you may make it provide in a part. For example, in FIG. 1, the light guide 7 may be provided only in a portion where the scale 22 is formed (a scale area from 0 to 180 in FIG. 1). In this case, regardless of the rotation angle position of the pointer 3 (the range of the scale from 0 to 180 in FIG. 1), the fluctuation of the total light incident on the side surface 313 of the pointer main body 31 from the light guide 7 is reduced. It is desirable to do.

  For this purpose, the intensity of the light emitted from the light guide section 7 is set to be large at positions near both ends (the positions of the 0 scale and the 180 scale) and is directed from the position of the 0 scale to the 80 scale ( It is desirable to set it so that it gradually decreases (from the position of the 180 scale toward the 100 scale).

  Moreover, in the above-mentioned embodiment, although the part from which the light guide part 7 radiate | emits is arrange | positioned on the concentric circle with respect to the rotation center of the pointer | guide 3, you may make it arrange | position on an ellipse, for example. In this case as well, it is desirable to reduce the fluctuation of the sum of the light incident on the side surface 313 of the pointer main body 31 from the light guide 7 regardless of the rotation angle position of the pointer 3.

  For this purpose, the intensity of the light emitted from the light guide section 7 is set large in the vicinity of the position where the ellipse and the major axis of the ellipse intersect, and the ellipse and the minor axis of the ellipse intersect from this position. It is desirable to set it so that it gradually decreases toward the position.

  Further, although the concave reflecting surface is formed on the back surface of the pointer, the initial object of the present invention can be achieved by forming a convex reflecting surface instead.

  Moreover, although the speedometer is formed as a pointer instrument, it is not necessary to limit to this, and other instruments such as a tachometer, a fuel gauge, etc. may be replaced or added.

FIG. 1 is a front view of a combination meter 1 which is a pointer instrument for a vehicle according to a first embodiment of the present invention. 2 is a cross-sectional view taken along line II-II in FIG. FIG. 3 is an enlarged view of a portion III in FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. 5 is a cross-sectional view taken along line VV in FIG. FIG. 6 is a circuit configuration diagram illustrating an electrical circuit configuration of the combination meter 1 according to the first embodiment of the present invention. FIG. 7 is a front view of the combination meter 1 which is a pointer instrument for a vehicle according to the second embodiment of the present invention. FIG. 8 is an enlarged view of a part VIII in FIG. 9 is a cross-sectional view taken along line IX-IX in FIG. FIG. 10 is a cross-sectional view of a recess 311 showing a modification of the recess 311 shown in FIG. FIG. 11 is a front view of a combination meter 1 that is a pointer instrument for a vehicle according to a third embodiment of the present invention. 12 is a cross-sectional view taken along line XII-XII in FIG.

Explanation of symbols

1 Combination meter (vehicle pointer instrument)
2 Dial 21 Character 22 Scale 23 Through-hole 3 Pointer 31 Pointer body 311 Recess 311a Reflective surface 312 Colored layer 313 Side surface 314 Back surface 315 Surface 32 Boss portion 32a Reflective surface 4 Movement 41 Shaft 5 Light emitting diode 6 Light emitting diode (Irradiation means, light source)
7 Light guide (irradiation means)
71 Reflecting surface 8 Reflector 9 Printed circuit board 10 Front cover 11 Design plate 12 Case 13 Control device 14 Speed sensor 15 Ignition switch 16 Battery

Claims (7)

Dial,
A pointer that rotates along the surface of the dial and has translucency;
Irradiating means for emitting light from the periphery outside the region where the pointer rotates and causing the light to enter the pointer from the side surface of the pointer;
The pointer has a concave portion formed in a concave shape on the back surface of the pointer that is colorless and transparent and extends in the longitudinal direction of the pointer, and the width of the concave portion in the short direction is narrower than the width of the pointer in the short direction. The cross-sectional shape perpendicular to the longitudinal direction of the pointer of the concave portion is an inverted V shape, and a colored layer or a fluorescent layer is formed on the surface of the concave portion, and is incident from the side surface of the pointer. A reflecting surface for reflecting the light of the irradiating means toward the surface of the pointer in a direction substantially perpendicular to the incident direction of the light is formed in the pointer using the concave portion. Instrument. The pointers extend in opposite directions with respect to the center of rotation of the pointer;
The vehicular pointer instrument according to claim 1, wherein the concave portion is provided at both of a site extending to one side and a site extending to the other side with respect to the rotation center of the pointer. The pointer includes a boss portion that is formed so as to cover at least the rotation center region of the pointer and does not have translucency,
Diffusion treatment is applied to the surface of the boss part,
The vehicular pointer instrument according to claim 1 , wherein the irradiation unit irradiates a surface of the boss portion . 4. The vehicular pointer instrument according to claim 1 , wherein the irradiation unit irradiates the surface of the dial . 5. The irradiation means includes a light source disposed behind the dial,
A light guide unit that guides light from the light source to a periphery outside the region where the pointer rotates, and emits the light from the periphery so that the light enters the pointer from the side surface of the pointer. The pointer instrument for vehicles as described in any one of Claims 1 thru | or 4 characterized by these. The light guide unit guides the light from the light source to the entire periphery outside the region where the pointer rotates, emits the light from the entire periphery, and enters the light from the side surface of the pointer to the pointer vehicular indicating instrument according to claim 5, characterized in that cause. The scale for a vehicle according to claim 5 or 6, wherein a scale is formed on the light guide section.

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