JP4609239B2 - Display device - Google Patents

Description

  The present invention relates to a display device, and is suitable for use in automobiles, for example.

  As a conventional display device, for example, an instrument device that transmits and illuminates a dial with light from a light source arranged on the back side thereof, facing the light source in the axial direction of the pointer shaft and reflecting light from the light source to the outer peripheral side There is a thing provided with the reflective part to perform (refer to patent documents 1).

In the above-described conventional display device, the reflection portion is formed as a part of a reflector that is an independent component different from the dial.
Japanese Patent No. 3314869

  In the conventional display device described above, since the reflection portion is formed as an independent component separate from the dial, there is a problem that the number of components and assembly man-hours of the display device increase.

  The present invention has been made in view of such problems, and an object of the present invention is to provide a display device capable of reducing the number of parts and the number of assembly steps by devising the configuration of the dial. .

  The present invention employs the following technical means to achieve the above object.

The display device according to claim 1 of the present invention includes a dial made of a translucent material, a light source arranged on the back side of the dial to illuminate the dial, and arranged on the back side of the dial. A movement that extends the drive shaft to the front side of the dial through a through hole provided in the dial, and a pointer that is fixed to the tip of the drive shaft and rotates along the surface of the dial, A reflective part that reflects light emitted from the light source toward the outer periphery of the dial is formed integrally with the dial at the periphery of the through hole of the dial, and the light source is arranged so that its optical axis intersects the reflective part. The light reflecting layer is provided in the reflecting portion, and the dial is characterized in that the reflecting portion is formed by molding after forming the light reflecting layer on a thin plate made of a translucent material .

  According to the above-described configuration, since the reflecting portion is formed integrally with the dial, it is possible to provide a display device that can reduce the number of parts and the number of assembling steps without using a reflector in a conventional display device. it can.

  In the above-described configuration, the light source is arranged so that the optical axis thereof intersects with the reflection part, that is, the reflection part is provided on the extension in the direction in which the luminance of the light emitted from the light source is highest.

  Thereby, the light from a light source can be utilized for illumination of a dial face with high efficiency.

  In the above-described configuration, as the light reflecting layer, a material having a light reflectance higher than that of the dial base, for example, a white coating film, a metal vapor deposition layer such as aluminum, or the like is used.

  Thereby, the light from a light source can be utilized for illumination of a dial face with high efficiency.

  The reflecting portion is formed so as to be inclined with respect to the outer peripheral side portion of the dial in terms of its function, that is, the portion provided with a scale or numeral corresponding to the pointer. In other words, the dial plate on which the reflection portion is formed is not a uniform plane but a three-dimensional shape. It is difficult to form a light reflecting layer on a three-dimensional member, which increases costs.

  Therefore, the dial can be easily and inexpensively manufactured by forming the light reflecting layer on the thin plate made of a translucent material and then forming the reflecting portion by molding.

The display device according to claim 2 of the present invention is characterized in that a light guide for guiding light emitted from the light source to the reflecting portion and guiding reflected light from the reflecting portion to the dial is provided on the back surface of the dial.

  According to the above configuration, the light emitted from the light source travels in the light guide and is guided to the dial, so that the light loss between the light source and the dial, that is, the light from the light source is dissipated in a direction other than the dial. Can be suppressed. Therefore, the light from the light source can be used for illumination of the dial face with high efficiency.

In the display device according to claim 3 of the present invention, the dial is mounted on the front surface side of the substrate on which the reflection portion is formed by molding after forming the light reflection layer on the thin plate made of a light-transmitting material. And it is characterized by being comprised from the design board which comprises a display design and consists of a translucent material.

  According to the above-described configuration, the appearance of the display device can be made novel by devising the shape of the design plate so that the dial shape is more three-dimensional.

The display device according to claim 4 of the present invention is characterized in that the design plate is formed so as to overlap the reflective portion of the substrate in the viewing direction of the display device.

  When the substrate constituting the dial is manufactured by molding a thin plate, the shape of the reflecting portion may appear on the front side of the dial, that is, the viewer side, and the appearance of the dial may be deteriorated. Then, if it is set as the structure like the display apparatus of Claim 6 of this invention, the reflective part shape of a board | substrate can be covered with a design board, and it can hide from a viewer. Therefore, the appearance of the display device can be made novel.

  Hereinafter, a case where the display device according to the present invention is applied to a combination meter 1 installed in a passenger compartment of 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 display device according to a first embodiment of the present invention. In FIG. 1, the upper side is the upper side of the automobile, and the left-right direction is the width direction of the automobile.

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

  FIG. 3 is a schematic diagram for explaining an electric circuit configuration of the combination meter 1 according to the first embodiment of the present invention.

  The combination meter 1 is provided in front of the driver's seat in the passenger compartment of the car so that the driver can visually recognize the information on the operating state of the car (traveling speed, engine speed, etc.) and other various information using a pointer instrument etc. To display.

  As shown in FIG. 1, the combination meter 1 operates the dial 2 with a scale, numerals, and the like according to the rotation angle position of the dial 7 that rotates along the surface of the dial 2 and the dial 2 as shown in FIG. It is instructed to be visible to the person.

  Below, the structure of the combination meter 1 is demonstrated.

  The dial 2 is formed of a translucent material, for example, a thin plate made of a colorless and transparent polycarbonate resin or acrylic resin. As shown in FIG. 1, the dial 2 includes a scale 2a, a number 2b, and a character 2c for instructing the traveling speed. The scale 2a, the numbers 2b, and the characters 2c are formed by applying a paint film on the front or back surface of the thin plate made of the above-described translucent material by printing or the like.

  Here, the example of the formation method of the scale 2a of the dial 2, the number 2b, and the character 2c is demonstrated.

  First, a translucent white film is applied to the back surface of a uniform flat thin plate made of a translucent material by printing or the like so as to completely include the outlines of the scale 2a, the numbers 2b, and the characters 2c. A light-shielding black coating is applied to the outer surface of each of the outlines of the scale 2a, numeral 2b, and character 2c by printing or the like on the surface of the thin plate. As a result, the scale 2a, the numbers 2b, and the characters 2c are covered with the translucent white film, and the background portions other than the scale 2a, the numbers 2b, and the characters 2c are covered with the light-shielding black film. Therefore, when the dial 2 is irradiated from the right side of FIG. 2 with light from the light emitting diode 4 which is a light source to be described later, only the scale 2a, the number 2b, and the character 2c are transmitted and illuminated to emit light in white.

  As shown in FIG. 2, a through hole 22 is provided in a substantially central portion of the dial 2. The through-hole 22 extends a shaft 61 that is a drive shaft of a movement 6 (described later) disposed behind the dial 2 (right side in FIG. 2) to the front side (left side in FIG. 2) of the dial 2. Is.

  As shown in FIG. 2, a reflector 21 that is a reflecting portion is formed integrally with the dial 2 at the periphery of the through hole 22 of the dial 2. The reflector 21 is for reflecting the light emitted from the light emitting diode 4 as a light source toward the outer peripheral side of the dial 2, that is, the portion where the scale 2a, the number 2b, and the character 2c are formed. Therefore, the reflector 21 is formed in a partial conical surface shape as shown in FIG. 1 corresponding to the arrangement shape of the scale 2a, the number 2b, and the characters 2c.

  As shown in FIG. 2, an aluminum vapor deposition film 3 as a light reflecting layer is formed on the back surface of the reflector 21 (the surface on the right side in FIG. 2). The aluminum vapor deposition film 3 is formed so as to cover at least the entire reflector 21 on the back surface of the dial 2. Thereby, the reflectance of the light from the light emitting diode 4 incident on the reflector 21 can be increased, and the light use efficiency for the transmitted illumination of the dial 2 can be increased.

  Here, the formation process of the reflector 21 of the dial 2 will be described.

  First, the aluminum vapor deposition film 3 is formed at a predetermined position on the back surface of a uniform flat thin plate made of a translucent material. The predetermined position is a portion that becomes the reflector 21 by performing press processing at least later. Next, as described above, a translucent white film and a light-shielding black film are applied by printing or the like to form scales 2a, numbers 2b, and characters 2c. Next, a conical reflector is formed by hot-pressing a uniform flat plate made of a light-transmitting material on which the aluminum vapor deposition film 3 has been formed, the scale 2a, the numbers 2b, and the characters 2c have been printed. 21 is formed.

  Thus, before forming the conical reflector 21 by pressing or the like, the formation of the aluminum vapor deposition film 3 in the uniform flat state of the light-transmitting material thin plate, the scale 2a, the numbers 2b, and the characters 2c By performing printing, formation of the aluminum vapor deposition film 3 and printing of the scale 2a, the number 2b, and the character 2c can be easily performed with high positional accuracy.

  On the back side of the dial 2 (right side in FIG. 2), a light emitting diode 4 as a light source for transmitting and illuminating the dial 2 is arranged. As the light emitting diode 4, a white light emitting diode is used in the combination meter 1 according to the first embodiment of the present invention. As shown in FIG. 2, the light emitting diode 4 is arranged so that its optical axis P intersects with the reflector 21. As a result, as much of the amount of light emitted from the light emitting diode 4 as possible can be made incident on the reflector 21.

  The light emitted from the light emitting diode 4 travels as indicated by an arrow in FIG.

  In the combination meter 1 according to the first embodiment of the present invention, three light emitting diodes 4 are arranged as shown in FIG. 1 in order to equalize and enhance the light emission luminance of the dial 2. As shown in FIG. 2, the light emitting diode 4 is mounted on a printed circuit board 5 disposed on the back side of the dial 2.

  A movement 6 is disposed on the back side (right side in FIG. 2) of the dial 2. The movement 6 is for rotating a pointer 7 (to be described later) along the surface of the dial 2 via a shaft 61 that is a drive shaft thereof. As the movement 6, for example, a cross coil actuator or a stepping motor is used.

  As shown in FIG. 2, the shaft 61 of the movement 6 extends to the front side (left side in FIG. 2) of the dial 2 through the through hole 22 of the dial 2, and a pointer 7 is attached to the tip thereof. It is fixed. The pointer 7 rotates integrally with the shaft 61. The movement 6 is mounted on the printed circuit board 5 as shown in FIG.

  The pointer 7 is made of a translucent material such as a colorless and transparent polycarbonate resin or acrylic resin. The pointer 7 is illuminated and displayed by light emitted from the light emitting diode 8 disposed on the back side of the dial 2 (right side in FIG. 2). As the light emitting diode 8, a white light emitting diode is used in the combination meter 1 according to the first embodiment of the present invention. That is, the back surface 71 of the pointer 7 is colored red by printing or hot stamping, and the reflecting surface 72 is provided on the pointer 7 as shown in FIG.

  The light from the light emitting diode 8 travels as indicated by the arrow in FIG. 2, enters the pointer 7, is reflected by the reflecting surface 72 toward the tip of the pointer 7, and this reflected light is reflected by the back surface 71. Reflected in the driver's viewing direction. Thereby, the pointer 7 is lit and displayed in red.

  As shown in FIG. 2, a light shielding cap 9 that covers the reflecting surface 72 of the pointer 7 and the vicinity thereof is attached to the pointer 7. The light-shielding cap 9 is formed of a light-shielding material, for example, a black resin material, and prevents light from the light emitting diode 8 from directly entering the viewer's eyes and dazzling the viewer. . The light emitting diode 8 for illuminating the pointer 7 is also mounted on the printed circuit board 5 as shown in FIG.

  The printed circuit board 5 is formed of, for example, a glass epoxy board or the like, and forms an electric circuit portion of the combination meter 1.

  As shown in FIG. 2, a controller 14 is mounted on the printed circuit board 5 for controlling the turning on / off of the light emitting diode 4 and the light emitting diode 8 and the driving control of the movement 6 for rotating the pointer 7. The controller 14 is composed of, for example, a microcomputer.

  The dial 2 and the printed board 5 are held and fixed to the casing 10 as shown in FIG. The casing 10 is made of, for example, a resin material. As shown in FIG. 2, the casing 10 is formed with a light shielding cylinder portion 10 a, and both end portions thereof are in close contact with the back surface of the dial 2 and the printed board 5. Thereby, the light emitted from the light emitting diode 8 irradiates the dial 2, or the light emitted from the light emitting diode 5 is prevented from entering the pointer 7, and the good appearance of the combination meter 1 is maintained. .

  A dial plate 11 is attached to the viewer side of the dial 2 (left side in FIG. 2), and a transparent cover 12 is installed at the tip of the dial plate 11 as shown in FIG. The transparent cover 12 is formed from a thin plate such as transparent resin or glass, and prevents dust and moisture from entering the combination meter 1.

  As shown in FIG. 2, a rear cover 13 is attached to the back side of the casing 10. The rear cover 13 is made of, for example, a resin material, and prevents dust, moisture, and the like from entering the combination meter 100.

  Next, the electrical circuit configuration and operation of the combination meter 1 according to the first embodiment of the present invention described above will be described with reference to FIG.

  As shown in FIG. 3, power is constantly supplied from the battery 17 to the controller 14. Further, the controller 14 is connected to the ignition switch 16 so as to be able to detect its operating state (ON or OFF).

  As shown in FIG. 4, a speed sensor 15 that detects the traveling speed of the automobile is connected to the controller 14 so that a detection signal can be input.

  As shown in FIG. 4, the light emitting diode 4, the movement 6 and the light emitting diode 8 are connected to the controller 14.

  The controller 14 detects the operating state of the ignition switch 16, and when the ignition switch 16 is in the ON state, the light emitting diodes 4 and 8 are turned on and the traveling speed of the vehicle is determined based on the detection signal from the speed sensor 15. The movement 6 is driven so that the pointer 7 indicates the calculated traveling speed on the dial 2. On the other hand, when the ignition switch 18 is in the OFF state, the light emitting diodes 4 and 8 are turned off, and the movement 6 is driven so that the pointer 7 indicates a travel speed of 0 km / h on the dial 2. Alternatively, the power supply to the movement 6 is stopped. When the energization of the movement 6 is stopped, the shaft 61 of the movement 6 rotates to a position where the pointer 7 indicates 0 km / h by an elastic force of a return spring (not shown).

  Next, the effect by the structure of the dial 2 which is the characteristics of the combination meter 1 by 1st Embodiment of this invention is demonstrated.

  In the combination meter 1 according to the first embodiment of the present invention, the light emitted from the light emitting diodes 4 arranged behind the dial 2 is emitted in the outer peripheral direction of the dial 2, more specifically, a scale 2a formed on the dial 2. A reflector 21 for reflecting and illuminating the numbers 2b and 2c is formed integrally with the dial 2 by hot pressing or the like on a thin plate made of a light-transmitting material.

  In the conventional display device, the reflection part for reflecting the light from the light source toward the dial is formed as a part of a reflector that is an independent component different from the dial. For this reason, there existed a problem that the number of parts of a display apparatus and the assembly man-hour increased.

  In the combination meter 1 according to the first embodiment of the present invention, by forming the reflector 2 integrally with the dial 2, the number of parts and assembly man-hours can be reduced.

  In the combination meter 1 according to the first embodiment of the present invention, the light emitting diode 4 is arranged such that the optical axis P intersects the reflector 21. As a result, as much of the amount of light emitted from the light emitting diode 4 as possible can be made incident on the reflector 21, and the light from the light emitting diode 4 can be used for illumination of the dial 2 with high efficiency.

  In the combination meter 1 according to the first embodiment of the present invention, the reflector 21 is formed with an aluminum vapor deposition film 3 as a light reflection layer, that is, a film having a higher light reflectivity than the base of the dial 2. Thereby, the light from the light emitting diode 4 can be used for illumination of the dial 2 with high efficiency. Therefore, the cost of the combination meter 1 can be reduced or the combination meter 1 can be reduced by reducing the number of fermentation necessary for obtaining a predetermined light emission luminance in the dial 2 or by reducing the drive current value of the light emitting diode 4. The current consumption can be reduced.

  In the combination meter 1 according to the first embodiment of the present invention, hot pressing is performed on a uniform flat plate made of a translucent material after the formation of the aluminum vapor deposition film 3 and the printing of the scale 2a, the numbers 2b, and the characters 2c are completed. The conical reflector 21 is formed by processing or the like. Formation of the aluminum vapor-deposited film 3 on a uniform flat thin plate and printing of the scale 2a, the number 2b, and the character 2c can be easily performed. Therefore, formation of the aluminum vapor deposition film 3 on the dial 2 and printing of the scale 2a, the number 2b, and the character 2c can be easily performed with high positional accuracy.

  In the combination meter 1 according to the first embodiment of the present invention described above, when the casing 10 is formed of a resin material, if the resin is colored in a bright color, for example, white, the character of the reflected light in the reflector 21 The light traveling in the direction other than the board 2 is reflected toward the dial 2, and the utilization efficiency of the light emitted from the light emitting diode 4 can be further increased.

(Second Embodiment)
FIG. 4 shows a sectional view of the combination meter 1 according to the second embodiment of the present invention.

  In the combination meter 1 according to the second embodiment of the present invention, a light guide 18 is additionally arranged on the back side of the dial 2 with respect to the combination meter 1 according to the first embodiment of the present invention, as shown in FIG. The point is different.

  The light guide 18 is made of a translucent material such as a colorless and transparent polycarbonate resin or acrylic resin. The light guide 18 guides the light emitted from the light emitting diode 4 to the reflector 21 and guides the reflected light reflected by the reflector 21, that is, the aluminum vapor deposition film 3, to the dial 2.

  As shown in FIG. 4, the light guide 18 includes an incident surface 18 a and a reflective surface 18 b. The light emitted from the light emitting diode 4 enters the light guide 18 from the incident surface 18 a and enters the reflector 21. A portion of the reflected light reflected by the reflector 21, that is, the aluminum vapor deposition film 3, is directly incident on the dial 2 and is emitted from the dial 2 toward the viewer as shown in FIG. Further, as shown in FIG. 4, a part of the reflected light reflected by the aluminum vapor deposition film 3 is incident on the reflecting surface 18 b of the light guide 18, reflected there, and incident on the dial 2 to be visually recognized from the dial 2. The light is emitted in the direction of the person.

  In the combination meter 1 according to the second embodiment of the present invention, the light emitted from the light emitting diode 4 travels in the light guide 18 and is guided to the dial 2, so that the reflected light other than the dial 2 is reflected by the reflector 21. The light traveling in the direction of can also be used for transmitted illumination of the dial 2. Therefore, the light from the light source can be used for illumination of the dial face with high efficiency.

(Third embodiment)
In FIG. 5, the front view of the combination meter 1 by 3rd Embodiment of this invention is shown.

  FIG. 6 is a cross-sectional view taken along line VI-VI in FIG.

  The combination meter 1 according to the third embodiment of the present invention is obtained by changing the configuration of the dial as compared with the combination meter 1 according to the first embodiment of the present invention. That is, in the combination meter 1 according to the third embodiment of the present invention, the dial 200 is used instead of the dial 2 of the combination meter 1 according to the first embodiment of the present invention.

  The configuration other than the dial 200 is the same as that of the combination meter 1 according to the first embodiment of the present invention.

  Below, the structure of the dial 200 which is the characteristics of the combination meter 1 by 3rd Embodiment of this invention is demonstrated.

  As shown in FIG. 6, the dial 200 is mounted on a substrate 210 made of a light-transmitting material such as a colorless and transparent polycarbonate resin or acrylic resin, and on the front side of the substrate 210 (left side in FIG. 6). It is comprised from the design board 220. FIG.

  As shown in FIG. 6, the substrate 210 is provided with a reflector 230 that is a reflection portion by performing press working. As shown in FIG. 6, an aluminum vapor deposition film 3 as a light reflecting layer is formed on the back surface of the reflector 230 (the right side surface in FIG. 2). The aluminum vapor deposition film 3 is formed so as to cover at least the entire reflector 230 on the back surface of the substrate 210. Thereby, the reflectance of the light from the light emitting diode 4 incident on the reflector 230 can be increased, and the light use efficiency for the transmitted illumination of the dial 200 can be increased. Note that the aluminum vapor deposition film 3 is formed on the substrate 210 before the reflector 230 is formed by pressing, as in the case of the dial 2 of the combination meter 1 according to the first embodiment of the present invention.

  As shown in FIG. 6, the design plate 220 includes a scale 220a, a number 221b, and characters 221c, which are display designs. The design plate 220 includes a thin plate made of a light-transmitting material, for example, a sheet 221 made of a thin plate such as a colorless and transparent polycarbonate resin or an acrylic resin, and a plate-like resin material, for example, a colorless and transparent polycarbonate resin, which is placed in close contact with the sheet 221. Or it comprises a mold part 222 made of acrylic resin or the like. That is, the dial plate 220 is formed by in-molding the sheet 221 when the mold part 222 is molded. The sheet 221 is provided with a scale hole 221a, a number 221b, and a character 221c as a display design. That is, in the sheet 221, the scale holes 221a are formed as through holes, and the numerals 221b and the characters 221c are formed by providing a light-transmitting colored layer by printing or the like. A light-shielding colored layer, for example, a light-shielding black layer, is provided on the background around the scale 221a, the numbers 221b, and the characters 221c. Here, the scale 220 a is formed such that the mold part 222 protrudes from the scale hole 221 a of the sheet 221 on the front side of the design plate 220 during in-mold molding. That is, the scale 220a is formed as a transparent solid projecting to the front side of the design plate 220.

  As shown in FIG. 6, the substrate 210 and the design plate 220 are provided with a through hole 211 and a through hole 220 b through which the shaft 61 of the movement 6 is inserted.

  In addition, as shown in FIG. 6, the design plate 220 is formed in a shape that covers the reflector 230 so as to overlap the reflector 230 of the substrate 210 in the viewing direction of the combination meter 1 (the left-right direction in FIG. 6). ing.

  In the combination meter 1 according to the third embodiment of the present invention, when the light emitting diode 4 is turned on, the dial 200 emits light with the color of the translucent colored layer applied to the design plate 220 with the numerals 221b and 221c. The scale 220a is displayed in a light emission color of the light emitting diode 4, that is, white.

  Also in the combination meter 1 according to the third embodiment of the present invention using the dial 200 described above, the same effect as in the first embodiment, that is, a component by forming the reflector 230 integrally with the dial 200. Reduction in the number of points and assembly man-hours, and improvement in the use efficiency of the light emitted from the light emitting diode 4 for the illumination of the dial 200 by arranging the optical axis P of the light emitting diode 4 so as to intersect with the reflector 230 can be obtained.

  Further, the appearance of the combination meter 1 can be improved by covering the reflector 230, specifically, the concave portion on the opposite side of the reflector 230, that is, the concave portion on the visual recognition side, with the design plate 220 and shielding it from the driver's line of sight.

  Further, since the dial 200 is composed of the substrate 210 and the design plate 220, the degree of freedom in setting the viewing side shape of the dial 200 can be improved (for example, the scale 220a is formed as a solid). The appearance of the meter 1 can be made novel.

  In the combination meter 1 according to the first to third embodiments of the present invention described above, the background color of the dial 2 and the dial 200 is black, but it is not necessary to be limited to black, and other colors such as It may be dark blue, dark gray, silver or the like.

  Further, in the combination meter 1 according to the first to third embodiments of the present invention described above, the background color of the dial 2 and the dial plate 200 is light-shielding black. As a light property, it is good also as a structure by which the ground part of the dial 2 and the dial plate 200, and both the scale 2a, the number 2b, and the character 2c are light-emitting displayed.

  In the combination meter 1 according to the first and second embodiments of the present invention described above, the scale 2a, the number 2b and the character 2c on the dial 2 are white, but these are white. It is not necessary to limit, and it is good also as another color, for example, yellow, yellowish green, light blue, etc. Further, the scale 2a, the number 2b, and the character 2c need not all have the same color, and at least one of the scale 2a, the number 2b, and the character 2c may be formed in a different color. The color of the scale 2a, number 2b, and letter 2c is highly visible when combined with the ground color of the dial 2, and the combination meter 1 looks good if it is a harmonious combination of colors. Can be anything.

  In the combination meter 1 according to the first to third embodiments of the present invention described above, the number of the light emitting diodes 4 is three. However, it is not necessary to limit the number to three, and the light emission luminance of the dial 2 That is, as long as the light emission luminance of the scale 2a, the number 2b, and the character 2c or the light emission luminance of the dial plate 200 is uniform, any number may be used.

  Moreover, in the combination meter 1 by the 1st-3rd embodiment of this invention demonstrated above, although the white light emitting diode is used as the light emitting diode 4 which is the light source for the dial 2 and the dial 200 illumination, A light emitting diode of a light emitting color such as green, yellow, or orange may be used. In this case, if the scale 2a, the number 2b, and the character 2c are colored with translucent white, they are displayed in a light emitting diode with the light emitting color of the light emitting diode 4.

  Moreover, in the combination meter 1 by 1st-3rd embodiment of this invention demonstrated above, although the light emitting diode 4 is used as the light source for the dial 2 and the dial 200, other types of light sources, for example, It may be replaced with a light bulb, a discharge lamp or the like.

  Moreover, in the combination meter 1 by 1st-3rd embodiment of this invention demonstrated above, the back surface 71 of the pointer | guide 7 is colored in red, a white light emitting diode is used as the light emitting diode 8, and the pointer | guide 7 is light-emitted in red. Although it is displayed, it is not necessary to limit to red, and the back surface 71 of the pointer 7 may be colored with another color, and light emission display may be performed with that color.

  In the above-described combination meter 1 according to the first to third embodiments of the present invention, the speedometer is described as an example. However, the speedometer is not limited to the speedometer. Other types of instruments, for example, an engine tachometer The present invention may be applied to a cooling water thermometer, a clock, and the like.

  Moreover, although the embodiment of the display device of the present invention has been described by taking the combination meter 1 mounted on an automobile as an example, it is not necessary to limit to the combination meter 1 for an automobile, and various devices for uses other than those for vehicles. For example, the present invention may be applied to a display device mounted on a consumer device.

It is a front view of the combination meter 1 which is a display apparatus by 1st Embodiment of this invention. It is the II-II sectional view taken on the line in FIG. It is a schematic diagram explaining the electric circuit structure of the combination meter 1 by 1st Embodiment of this invention. It is sectional drawing of the combination meter 1 which is a display apparatus by 1st Embodiment of this invention, and is equivalent to the II-II sectional view taken on the line in FIG. It is a front view of the combination meter 1 by 3rd Embodiment of this invention. FIG. 6 is a sectional view taken along line VI-VI in FIG. 5.

Explanation of symbols

1 Combination meter (display device)
2 Dial 21 Reflector (reflective part)
22 Through-hole 2a Scale 2b Number 2c Character 3 Aluminum vapor deposition film (light reflection layer)
4 Light emitting diode (light source)
5 Printed circuit board 6 Movement 61 Shaft (drive shaft)
7 Pointer 8 Light-emitting diode 9 Light-shielding cap 10 Casing 11 Turn plate 12 Transparent cover 13 Rear cover 14 Controller 15 Speed sensor 16 Ignition switch 17 Battery 18 Light guide 18a Incident surface 18b Reflective surface 200 Dial 210 Substrate 211 Through hole 220 Design plate 220a Scale (display design)
220b Through hole 221 Sheet 221a Scale hole (display design)
221b Number (display design)
221c characters (display design)
222 Molding part 230 Reflector (reflection part)

Claims (4)

A dial made of a translucent material;
A light source disposed on the back side of the dial and illuminating the dial;
A movement arranged on the back side of the dial and extending its drive shaft to the front side of the dial via a through hole provided in the dial;
A pointer that is fixed to the tip of the drive shaft and rotates along the surface of the dial;
A reflection part that reflects light emitted from the light source toward the outer peripheral side of the dial on the periphery of the through hole of the dial is formed integrally with the dial,
The light source is arranged so that its optical axis intersects the reflection part ,
A light reflecting layer is provided on the reflecting portion,
The display device , wherein the dial is formed by forming the light reflecting layer on a thin plate made of a translucent material and then forming the reflecting portion by molding . The display device according to claim 1, further comprising: a light guide member that guides light emitted from the light source to the reflection unit and guides reflected light from the reflection unit to the dial on a back surface of the dial . A dial made of a translucent material;
A light source disposed on the back side of the dial and illuminating the dial;
A movement arranged on the back side of the dial and extending its drive shaft to the front side of the dial via a through hole provided in the dial;
A pointer that is fixed to the tip of the drive shaft and rotates along the surface of the dial;
A reflection part that reflects light emitted from the light source toward the outer peripheral side of the dial on the periphery of the through hole of the dial is formed integrally with the dial,
The light source is arranged so that its optical axis intersects the reflection part,
A light reflecting layer is provided on the reflecting portion,
The dial is formed of a translucent material having a display design and a substrate on which the reflection portion is formed by molding after forming the light reflection layer on a thin plate made of the translucent material and the front surface of the substrate. Viewing device you characterized in that it is composed of a decorative plate made. The display device according to claim 2 , wherein the design plate is formed so as to overlap the reflective portion of the substrate in a viewing direction of the display device .

Images