JP4609122B2 - Instrument display board, method for producing the same, and instrument equipped therewith - Google Patents

Description

  The present invention relates to an instrument display board formed from a metal plate, a method for manufacturing the instrument display board, and an instrument equipped therewith.

  In recent years, for the purpose of improving the appearance, etc., as an instrument display board, an aluminum thin plate whose surface has been anodized is used as a material, and a display design such as desired characters, patterns, designs, designs, etc. is formed on this. There is something. On the other hand, in the vehicular instrument, information related to an available vehicle increases due to the development of technology, and this information is viewed through an opening provided in the instrument display board.

  These display designs and openings are generally formed by stamping an aluminum thin plate with a press machine.

  However, in the method in which the display design and the opening are formed by punching from an aluminum thin plate, bending and burrs are generated during press punching, which may cause problems such as deterioration in the appearance of the instrument display plate.

  This is a problem common to not only the vehicle instrument but also the instrument display board formed from a metal plate including an aluminum thin plate.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a display panel for an instrument that is formed of a metal plate and has reduced curvature and burrs, a manufacturing method thereof, and an instrument equipped with the display panel. To do.

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

The instrument display board according to claim 1 or 2 is an instrument display board formed of a metal plate, and the metal plate further punches the outer periphery of the first opening formed by etching, thereby The second opening is formed.

  In this configuration, the metal plate further has a second opening formed by punching the outer periphery of the first opening formed by etching. Thereby, the punching area can be reduced as much as possible by opening a slightly smaller first opening by etching with respect to the second opening to be punched. As a result, since the stress applied to the metal plate due to punching is reduced, the occurrence of bending and burrs near the second opening can be reduced.

The instrument display board according to claim 1 includes a low-reflectance light-shielding film formed on the back surface of the metal plate and on the outer periphery of the second opening.

  In this configuration, since the light-shielding film having a low reflectance is formed on the back surface of the metal plate and on the outer periphery of the second opening, the light on the back surface side of the instrument display plate is on the back surface of the metal plate and the second opening. It is possible to prevent the light from being reflected from the outer periphery and leaking out from the second opening. As a result, it is possible to prevent the appearance of the instrument display board from deteriorating.

The instrument display board according to claim 2 , wherein the metal plate is provided with a support sheet attached to the back surface thereof, and the metal plate is formed by being opened by etching when forming the first opening. When the design is provided and the second opening is formed, the support sheet is punched and opened together with the outer periphery of the first opening.

  In this configuration, a metal sheet is provided with a support sheet adhered to the back surface, and the metal sheet is provided with a display design that is formed by opening by etching when the first opening is formed. Thereby, even if a part of the display design has a shape separated from the metal plate, this part is fixed to the instrument display board by the support sheet. As a result, a display design having a complicated shape can be realized, so that the appearance of the instrument display board can be improved.

The instrument display board according to claim 2 is configured such that the support sheet has translucency and includes a light-shielding film formed on the back surface of the support sheet and on the outer periphery of the second opening.

  In this configuration, the support sheet has translucency, and a light-shielding film is formed on the back surface of the support sheet and on the outer periphery of the second opening. Therefore, the light on the back surface side of the instrument display board is reflected by the second light of the support sheet. It is possible to prevent light from being transmitted through the end face in the opening. Thereby, it can suppress that the appearance of the instrument display board falls.

The instrument display board according to claim 3 is configured such that the metal plate has an oxide film formed on at least an upper surface thereof before etching.

  In this configuration, since the metal plate has an oxide film formed on at least the upper surface thereof before etching, a change in the appearance of the instrument display plate due to the oxidation of the metal plate can be suppressed.

The instrument display board according to claim 4 is configured such that the metal plate is formed of aluminum and the oxide film is formed by anodizing the metal plate.

  In this configuration, the metal plate is made of aluminum, and the oxide film anodizes the metal plate. Even in this configuration, the above-described effects can be obtained.

The instrument display board according to claim 5 is configured such that the width of the metal plate that is punched and cut when forming the second opening is 0.5 mm to 2 mm.

  In this configuration, the width of the metal plate that is punched and cut when forming the second opening is 0.5 mm to 2 mm, and the above-described effects can be obtained even in this configuration.

An instrument according to claim 6 includes the instrument display board according to any one of claims 1 to 5 and a display unit that displays information behind the instrument display board. The information is visually recognized through the second opening.

  In this configuration, a display unit that displays information is provided behind the instrument display board, and the display unit allows the information to be visually recognized through the second opening, and the above-described effects can be obtained even in this configuration.

The instrument according to claim 7 is an instrument used in a vehicle, wherein the display unit is at least one of an indicator for notifying an operating state of a device provided in the host vehicle and a warning for warning an abnormality of the host vehicle. To do.

  In this configuration, the display unit is at least one of an indicator that informs the operating state of the equipment provided in the host vehicle and a warning that warns of an abnormality of the host vehicle. In this configuration, the above-described effects can be obtained.

An instrument according to an eighth aspect includes the instrument display board according to any one of the first to fifth aspects, and the instrument display board is a dial for a pointer instrument.

  In this configuration, the instrument display board is a dial for a pointer instrument, and the above-described effects can be obtained even in this configuration.

The instrument according to claim 9 includes a display unit that displays information behind the instrument display board, and the display unit is configured to visually recognize the information through the second opening.

  In this configuration, a display unit that displays information is provided behind the instrument display board, and the display unit allows the information to be visually recognized through the second opening, and the above-described effects can be obtained even in this configuration.

The instrument according to claim 10 is an instrument used in a vehicle, wherein the display unit is at least one of an indicator for notifying an operating state of a device provided in the host vehicle and a warning for warning an abnormality of the host vehicle. To do.

  In this configuration, the display unit is at least one of an indicator that informs the operating state of the equipment provided in the host vehicle and a warning that warns of an abnormality of the host vehicle. In this configuration, the above-described effects can be obtained.

The method for producing an instrument display board according to claim 11 is a process for producing an instrument display board formed from a metal plate, wherein the first opening is formed by etching the metal plate; A punching step of punching and enlarging the outer periphery of the opening to thereby form a second opening.

  This manufacturing method includes an etching process for forming the first opening by etching the metal plate, and a punching process for punching and expanding the outer periphery of the first opening, thereby forming the second opening. Thereby, the punching area can be reduced as much as possible by opening a slightly smaller first opening by etching with respect to the second opening to be punched. As a result, since the stress applied to the metal plate due to punching is reduced, the occurrence of bending and burrs near the second opening can be reduced.

The method for producing an instrument display board according to claim 12 includes a sticking step for sticking the support sheet to the back surface of the metal plate before the etching step, and the display design is changed by etching the metal plate in the etching step. This is a manufacturing method in which an opening is formed together with one opening, and the support sheet is punched and opened together with a metal plate in the punching process.

  In this manufacturing method, a sticking step of sticking the support sheet to the back surface of the metal plate is provided before the etching step, and the display design is opened together with the first opening by etching the metal plate in the etching step. Thereby, even if a part of the display design has a shape separated from the metal plate, this part is fixed to the instrument display board by the support sheet. As a result, a display design having a complicated shape can be realized, so that the appearance of the instrument display board can be improved.

The manufacturing method of the instrument display board of Claim 13 is a manufacturing method provided with the oxide film formation process which forms an oxide film on a metal plate before an etching process.

  In this manufacturing method, since the oxide film forming step for forming the oxide film on the metal plate is provided before the etching step, a change in the appearance of the instrument display plate due to the oxidation of the metal plate can be suppressed.

The method for producing an instrument display board according to claim 14 is a production method in which the metal plate is formed from aluminum, and the oxide film is formed by anodizing the metal plate in the oxide film forming step.

  In this manufacturing method, the metal plate is formed of aluminum, and the oxide film is formed by anodizing the metal plate in the oxide film forming step, and the above-described effects can be obtained also in this manufacturing method.

The method for producing an instrument display board according to claim 15 is a method of partially masking printing with masking ink on the upper surface of a metal plate in an etching step, and carving an unmasked exposed portion until reaching the back surface of the metal plate. It is.

  In this manufacturing method, in the etching process, masking printing is partially performed on the upper surface of the metal plate with masking ink, and an unmasked exposed portion is carved and opened until reaching the back surface of the metal plate. In this manufacturing method, the above-described effects can be obtained.

  Hereinafter, an example in which the instrument display board according to the present invention is applied to a combination meter 1 mounted on an automobile will be described with reference to the drawings.

(Constitution)
FIG. 1 is a front view of a combination meter 1 which is a meter provided with a dial 2 which is a display panel for a meter according to an 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 a front view of the dial 2 shown in FIG.

  4A is an enlarged sectional view taken along line IVA-IVA in FIG. 3, and FIG. 4B is an enlarged sectional view taken along line IVB-IVB in FIG.

  FIG. 5 is a manufacturing process diagram of the dial 2 shown in FIG.

  6A is an explanatory diagram of step S2 in FIG. 5, FIG. 6B is an explanatory diagram of step S5 in FIG. 5, and FIG. 6C is a step in FIG. It is explanatory drawing of S6, S7, FIG.6 (d) is explanatory drawing of process S7 in FIG.

  FIG. 7 is a circuit configuration diagram illustrating an electrical circuit configuration of the combination meter 1 shown in FIG.

  The combination meter 1 is disposed in front of the driver's seat of the automobile and displays various vehicle information related to the automobile. As shown in FIG. 1, the combination meter 1 according to the present embodiment includes an indicator / warning 4 and a distance meter 5 which are a speedometer and a display unit.

  The speedometer is composed of a dial 2 having a display design (including numerals) 21 and a scale, a pointer 3 and the like, and the pointer 3 is an upper surface of the dial 2 (the left side indicated by an arrow in FIG. 2). ) To display the traveling speed of the automobile and allow the driver to visually recognize it.

  The indicator / warning 4 includes an indicator for notifying the operating state of the equipment provided in the automobile and a warning for warning the abnormality of the automobile. In FIG. 1, five indicators / warnings 4 are provided. . As an example, the indicator / warning 4 is a battery voltage warning 4a that warns when a battery voltage detected by a voltage sensor (not shown) becomes lower than a predetermined value.

  The distance meter 5 displays the distance traveled by the vehicle, and the indicator / warning 4 and the distance meter 5 can be visually recognized through the openings 41 and 51, which are the second openings formed in the dial 2, respectively. Configured as follows.

  Behind the dial 2 (on the right side indicated by the arrow in FIG. 2), an indicator / warning 4, a light guide 43, a distance meter 5, a movement 7, light emitting diodes 81, 82, 83, and a printed circuit board 9 are arranged. . The printed circuit board 9 constitutes an electric circuit part of the combination meter 1, and the movement 7 and the light emitting diodes 81, 82, and 83 are mounted on the printed circuit board 9.

  The movement 7 is composed of, for example, a cross coil actuator, a stepping motor, or the like, and rotates the shaft 71 by an angle corresponding to an electric signal from the outside (a signal related to the vehicle speed in the present embodiment). The shaft 71 extends through the through hole 31 of the dial 2 to the upper surface side, that is, the left side indicated by the arrow in FIG. 2, and the pointer 3 is fixed to the tip thereof.

  The light emitting diode 81 illuminates and transmits the character 21 and the scale 22 of the dial 2, and emits white light, for example.

  The light emitting diode 82 illuminates and transmits the indicator / warning 4 and emits red light, for example. The light guide 43 guides the red light from the light emitting diode 82 to the indicator / warning 4, and one light guide 43 and one light emitting diode 82 are provided for each indicator / warning 4. In addition, the light guide 43 prevents the red light from the light emitting diode 82 from being guided to the adjacent indicator / warning 4.

  The indicator / warning 4 is formed of a resin sheet such as polycarbonate having translucency (may be smoke-like), and on the back surface (the right surface indicated by the arrow in FIG. 2), for example, black display The layer is printed or the like. This display layer has the indicator / warning 4 mark shape shown in FIG. 1, and the indicator / warning 4 is fixed to the light guide 43 with an adhesive or the like.

  The light emitting diode 83 illuminates the distance meter 5 and emits white light, for example. The distance meter 5 is composed of a liquid crystal panel, and a distance meter that displays the travel distance of the automobile is formed as a segment. As this liquid crystal panel, for example, a liquid crystal panel that is translucent when no voltage is applied and that is light-shielding when a voltage is applied is used. FIG. 1 shows a state in which a voltage is applied to all characters and numbers.

  The change-over knob 6 is operated by operating the change-over switch 61 (FIG. 7) so that the distance meter 5 displays the cumulative travel distance of the car (odometer) and the distance of the car (trip meter). Between them. The switching knob 6 is configured to extend from the rear surface side to the upper surface side, that is, from the right side to the left side indicated by the arrow in FIG.

  As shown in FIG. 2, the housing of the combination meter 1 includes a transparent CFC and cover 10 that covers the upper surface side of the dial 2 and the pointer 3 (the left side indicated by the arrow in FIG. 2), and the end of the dial 2. It is comprised from the design board 11 and the case 12 to cover. The dial 2 is fixed between the design plate 11 and the case 12, for example.

  As shown in FIGS. 3 and 4, the dial 2, which is a feature of the present invention, is an aluminum plate 25 that is a metal plate, a resin that is a support sheet and has translucency (may be smoke-like). It is formed of a film 26 and an adhesive layer 27 that fixes the resin film 26 to the aluminum plate 25 and has translucency. The resin film 26 is formed from polyethylene terephthalate (PET) or the like.

  The character 21 and the scale 22 are formed of etching holes 21 a and 22 a formed in the aluminum plate 25 and having respective shapes, an adhesive layer 27 behind the etching holes 21, and a resin film 26. Here, in the character 21, as shown in FIG. 4B, a separation portion 21b separated from the aluminum plate 25 by the etching hole 22a is formed. However, the separation part 21 b is fixed to the resin film 26 by the adhesive layer 27, so that it is not separated from the dial 2.

  The thickness dimensions T1, T2, and T3 of the aluminum plate 25, the adhesive layer 27, and the resin film 26 are, for example, 0.25 mm, 0.05 mm, and 0.075 mm, respectively.

  The white light from the light emitting diode 81 is transmitted through the resin film 26 and the adhesive layer 27 (not shown in FIG. 2) in FIG. 2, and this transmitted light is used as the characters 21 and the scales 22 as etching holes 21a, It is visually recognized from 22a.

  In order to make the scales 22 corresponding to “100” to “160” of the characters 21 visible in red, for example, the colored film 22b having translucency is attached to the back surface of the resin film 26 (the arrows in FIGS. 2 and 4 indicate It is formed at a position corresponding to the scale 22.

  That is, in FIG. 2, the white light from the light emitting diode 81 passes through the colored film 22b and is colored red, and this red colored light is the resin film 26 and the adhesive layer 27 (omitted in FIG. 2). The red transmitted light is visually recognized as a scale 22.

  On the other hand, in the through holes 31 and 61 through which the shaft 71 and the switching knob 6 respectively penetrate, and the openings 41 and 51 through which the indicator / warning 4 and the distance meter 5 are visually recognized, the aluminum plate 25, the adhesive layer 27, and the resin film 26 are opened together.

  Next, the manufacturing process of the dial 2 is demonstrated based on FIG. 5 and FIG.

  FIG. 6 is an explanatory diagram for explaining the manufacturing process of the dial 2 in an enlarged cross-sectional view corresponding to the vicinity of the scale 22 and the vicinity of the opening 51 in FIG.

  In step S1, an aluminum plate member having a thickness dimension T1 of 0.25 mm is cut into a size of 400 × 400 mm, which is nine dial plates 2. Next, a resin sheet material in which a pressure-sensitive adhesive is applied in advance on the entire surface of one side of a polyethylene terephthalate (PET) sheet having a thickness dimension T3 of 0.075 mm is prepared.

  In step S2, this resin sheet material is pasted on the entire surface of one side of the aluminum plate material cut in step S1 by thermocompression bonding to form a dial base material 20 shown in FIG. In the dial base material 20, the aluminum plate material corresponds to the aluminum plate 25, the PET sheet corresponds to the resin film 26, and the pressure sensitive adhesive corresponds to the adhesive layer 27.

  In step S3, the hairline 24 shown in FIG. 3 is applied to the upper surface of the dial base material 20 (the upper surface indicated by the arrow in FIG. 6A), that is, the upper surface of the aluminum plate 25. It is formed by a rotating grindstone. The hairline 24 is a decorative pattern that is formed substantially concentrically with the through hole 31 and gives the dial 2 a high-class feeling, a sporty feeling, and the like.

  In step S4, the dial base material 20 that has been subjected to the hairline processing is subjected to a direct current under a predetermined condition using, for example, the aluminum plate 25 of the dial base material 20 as an anode in a sulfuric acid electrolyte solution having a predetermined concentration at a predetermined temperature. Energize. As a result, an oxide film having a thickness of about 10 microns is formed on the entire upper surface of the aluminum plate 25 (anodic oxidation). The colorless oxide film is dyed, for example, in gray, and the oxide film is sealed.

  In step S5, a predetermined masking ink is formed on the oxide film of the aluminum plate 25 of the dial base material 20 by screen printing or the like. In FIG. 3, the masking is performed in a shape in which the regions surrounded by the broken lines are extracted (exposed) in the openings 41 and 51 and each shape of the character 21 and the scale 22 is extracted (exposed).

  The dial base material 20 on which the masking ink is formed is etched with an etchant. The etching solution is, for example, a main material of a caustic soda aqueous solution having a predetermined concentration heated to a predetermined temperature, a room temperature iron chloride aqueous solution adjusted to a predetermined state, etc., and using this, by means such as immersion, The aluminum plate 25 of the dial base material 20 is etched.

  After completion of this etching treatment, the masking ink is removed by immersion or the like with a solvent that dissolves the masking ink. As a result, as shown in FIG. 6B, the aluminum plate 25 is opened until reaching the adhesive layer 27 on the back surface thereof, and the etching hole 22a (same as 21a) and the etching opening 51a (which is the first opening) ( 41a is the same).

  In step S6, a colored film 22b for coloring and observing the scale 22 and a light-shielding film 51b having a low reflectance such as black to be described later (same for 41b) are placed on the back surface of the resin film 26 (in FIG. 6C). On the lower surface indicated by the arrow) by screen printing.

  In step S7, the dial base material 20 having a size of 400 × 400 mm is divided into nine dial base materials 20, and the aluminum plate 25, the adhesive layer 27, and the resin at the portion indicated by the broken line in FIG. 6C. The film 26 and the light shielding film 51b (the same applies to 41b) are punched out simultaneously. As a result, an opening 51 (same as 41) as the second opening shown in FIG. 6D is formed, and a light shielding film 51b (same as 41b) is formed on the outer periphery thereof.

  Here, the width dimension L1 of the aluminum plate 25 to be punched and cut is about 0.5 to 2.0 mm, and the width dimension L2 of the light shielding films 41b and 51b formed on the outer peripheries of the openings 41 and 51. Is approximately 1 mm.

  The light shielding film 51b (the same applies to 41b) is for blocking the light of the arrow P so that the end face 26a of the resin film 26 does not shine as shown in FIG. 6D.

  In step S7, the V-groove shown in FIG. 3 is formed to complete the dial 2 (step S8).

  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 electric power from the battery 15, and the ignition switch 14 is connected so as to detect its operation position (off position, on position), and detects the vehicle speed of the vehicle. The vehicle speed sensor 16 and sensors and switches (not shown) are connected so as to be able to input those signals.

  Further, the distance meter 5, the changeover switch 61 operated by the changeover knob 6, the movement 7 driven by the control device 13 according to the detection signal from the vehicle speed sensor 16, and the light emitting diodes 81, 82, 83 are also included in the control device 13. Connected to.

(Operation)
When the ignition switch 14 is turned on, in FIG. 7, the control device 13 detects this and starts operation, and drives the movement 7 based on the output signal from the vehicle speed sensor 16. At this time, the control device 13 operates the distance meter 5 based on the operation state of the changeover switch 61 operated by the changeover knob 6 to light the light emitting diodes 81 and 83.

  In FIG. 2, the white light of the light emitting diode 81 that has been lit passes through the resin film 26 and the adhesive layer 27 (FIG. 4), and this white transmitted light forms the characters 21 and scales 22 from the etching holes 21 a and 22 a. Visible. On the scale 22 corresponding to “100” to “160” of the characters 21, the white light from the light emitting diode 81 passes through the colored film 22 b and is colored red, and this red colored light is connected to the resin film 26. The red transmitted light passes through the adhesive layer 27 (FIG. 4) and is visually recognized as the scale 22.

  The indicator / warning 4 turns on the indicator / warning 4 corresponding to the operation state of the equipment provided in the automobile or when warning the abnormality of the automobile.

  For example, when the voltage of the battery 15 detected by a voltage sensor (not shown) becomes lower than a predetermined value, the light emitting diode 82 of the battery voltage warning 4a is turned on. The red light of the light-emitting diode 82 that has been turned on is guided to the light guide 43 in FIG. 2, and illuminates the battery voltage warning 4a. Thereby, in the battery voltage warning 4a, the black battery mark is visually recognized against the red emission.

  In addition, the distance meter 5 receives the white light transmitted illumination of the light-emitting diode 83 that is turned on, and performs a predetermined display based on the operation state of the changeover switch 61.

  The indicator / warning 4 and the distance meter 5 are visible through the openings 41 and 51 formed by further punching the outer peripheries of the etching openings 41a and 51a formed by etching. Thereby, generation | occurrence | production of the curve and burr | flash which generate | occur | produced if the opening parts 41 and 51 were formed only by stamping can be reduced.

  That is, the present invention focuses on the etching technique. The press area is reduced as much as possible by opening a slightly smaller area by etching with respect to the area to be punched by the press. Thereby, the stress applied to the aluminum plate 25 due to punching is reduced, and as a result, the occurrence of bending and burrs in the vicinity of the openings 41 and 51 can be reduced. For this reason, it can suppress that the appearance of the display through the opening parts 41 and 51 falls.

  The character 21 and the scale 22 are formed of etching holes 21 a and 22 a formed in the aluminum plate 25 and having respective shapes, an adhesive layer 27 and a resin film 26 behind the etching holes 21 a and 22 a. 4B is fixed to the resin film 26 by the adhesive layer 27, and thus is not separated from the dial 2. As a result, not only the character 21 and the scale 22 but also a design having a complicated shape can be formed, and the appearance of the dial 2 can be further improved.

  Further, since the etching holes 21a and 22a are formed not by punching but by etching, no curvature and burrs are generated in these, so that the appearance of these displays does not deteriorate.

  Furthermore, since the dial 2 is formed from the aluminum plate 25 and the hairline 24 is formed on the upper surface thereof, the dial 2 can be given a sense of quality, sportiness, or the like.

  The dial 2 which is the instrument display board according to the embodiment of the present invention described above is formed from the aluminum plate 25 which is a metal plate, and the aluminum plate 25 is an etching which is the first opening formed by etching. The outer peripheries of the openings 41a and 51a are further punched to have openings 41 and 51 which are second openings formed thereby. Thereby, the dial 2 which reduced the generation | occurrence | production of a curve and a burr | flash, the manufacturing method, and the combination meter 1 which is a measuring instrument provided with the same can be provided in the vicinity of the opening parts 41 and 51.

  In addition, it is good also as a stainless steel board etc. instead of the aluminum plate 25, and you may form the resin film 26 from the resin material which has another translucency instead of a polyethylene terephthalate (PET).

  The instrument display board according to the present invention is formed of a metal plate, and the outer periphery of the first opening formed by etching on the metal plate is further punched to thereby form the second opening. For this reason, the resin film 26 may not be provided. In this case, the character 21 and the scale 22 are formed, for example, on the upper surface of the metal plate by printing or the like, and the light shielding films 41b and 51b may be formed on the back surface of the metal plate and on the outer periphery of the second opening.

  Further, although a speedometer is formed as a meter, it is not necessary to be limited to these, and another meter such as a tachometer, a fuel meter, or the like may be replaced or added.

  Further, the instrument is not limited to the pointer instrument.

FIG. 1 is a front view of a combination meter 1 which is a meter provided with a dial 2 which is a display panel for a meter according to an embodiment of the present invention. 2 is a cross-sectional view taken along line II-II in FIG. FIG. 3 is a front view of the dial 2 shown in FIG. 4A is an enlarged sectional view taken along line IVA-IVA in FIG. 3, and FIG. 4B is an enlarged sectional view taken along line IVB-IVB in FIG. FIG. 5 is a manufacturing process diagram of the dial 2 shown in FIG. 6A is an explanatory diagram of step S2 in FIG. 5, FIG. 6B is an explanatory diagram of step S5 in FIG. 5, and FIG. 6C is a step in FIG. It is explanatory drawing of S6, S7, FIG.6 (d) is explanatory drawing of process S7 in FIG. FIG. 7 is a circuit configuration diagram illustrating an electrical circuit configuration of the combination meter 1 shown in FIG.

Explanation of symbols

1 Combination meter
2 Dial (instrument display board, pointer instrument dial)
20 Dial base material 21 characters (display design)
21a, 22a Etching hole 21b Separation part 22 Scale (display design)
22b Colored film 23 V groove 24 Hairline 25 Aluminum plate (metal plate)
26 Resin film (support sheet)
26a Film end face 27 Adhesive layer 3 Pointer 31, 61 Through hole 4 Indicator / warning (display section)
4a Battery voltage warning (display section)
41, 51 opening (second opening)
41a, 51a Etching opening (first opening)
41b, 51b Light-shielding film 42 Display layer 43 Light guide part 5 Distance meter (display part)
6 switching knob 61 switching switch 7 movement 71 shaft 81, 82, 83 light emitting diode 9 printed circuit board 10 transparent front cover 11 design board 12 case 13 control device 14 ignition switch 15 battery 16 vehicle speed sensor T1, T2, T3 thickness dimension L1, L2 width dimension

Claims (15)

An instrument display board formed from a metal plate,
The metal plate further has a second opening formed by punching the outer periphery of the first opening formed by etching,
An instrument display board comprising a low-reflectance light-shielding film formed on the back surface of the metal plate and on the outer periphery of the second opening . An instrument display board formed from a metal plate,
The metal plate further has a second opening formed by punching the outer periphery of the first opening formed by etching,
The metal plate includes a support sheet adhered to the back surface thereof,
The metal plate includes a display design formed by opening by the etching when forming the first opening,
When forming the second opening, the support sheet is punched and opened together with the outer periphery of the first opening,
The support sheet has translucency,
Total dexterity panel you characterized in that a rear surface provided with a light shielding film formed on the outer periphery of the second opening of the support sheet. The metal plate is at least on its upper surface, instrument panel of claim 1 or claim 2 characterized in that it has an oxide film formed before the etching. The metal plate is made of aluminum;
The instrument display board according to claim 3 , wherein the oxide film is formed by anodizing the metal plate. The width of the metal plate is cut by punching in forming the second opening, according to any one of claims 1 to 4, characterized in that from 0.5mm is 2.0mm Instrument display board. An instrument display board according to any one of claims 1 to 5 ,
A display unit for displaying information behind the instrument display board,
The display unit causes the information to be visually recognized through the second opening. An instrument used in a vehicle,
The instrument according to claim 6 , wherein the display unit is at least one of an indicator for notifying an operating state of a device provided in the host vehicle and a warning for warning an abnormality of the host vehicle. An instrument display board according to any one of claims 1 to 5 , comprising:
The instrument display board is a dial for a pointer instrument. A display unit for displaying information behind the instrument display board;
The instrument according to claim 8 , wherein the display unit makes the information visible through the second opening. An instrument used in a vehicle,
The instrument according to claim 9 , wherein the display unit is at least one of an indicator for notifying an operating state of a device provided in the host vehicle and a warning for warning an abnormality of the host vehicle. A method of manufacturing an instrument display board formed from a metal plate,
An etching step of forming the first opening by etching the metal plate;
A method for producing an instrument display board, comprising: a punching step of punching and enlarging an outer periphery of the first opening to thereby form a second opening. A sticking step of sticking a support sheet to the back surface of the metal plate is provided before the etching step,
In the etching step, the display design is opened together with the first opening by etching the metal plate,
12. The method for producing an instrument display board according to claim 11 , wherein in the punching step, the support sheet is punched and opened together with the metal plate. The oxide film forming step of forming an oxide film on the metal plate, preparation of instrument panel of claim 11 or claim 12, characterized in that it comprises prior to the etching process. The metal plate is made of aluminum;
14. The method of manufacturing an instrument display board according to claim 13 , wherein in the oxide film forming step, the oxide film is formed by anodizing the metal plate. 12. The etching process according to claim 11 , wherein masking printing is partially performed on the upper surface of the metal plate with masking ink, and an unmasked exposed portion is carved out until reaching the back surface of the metal plate. Item 15. A method for producing an instrument display panel according to any one of Items 14 to 14 .

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