CN112572148A - Instrument device - Google Patents

Instrument device Download PDF

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Publication number
CN112572148A
CN112572148A CN202011023135.1A CN202011023135A CN112572148A CN 112572148 A CN112572148 A CN 112572148A CN 202011023135 A CN202011023135 A CN 202011023135A CN 112572148 A CN112572148 A CN 112572148A
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CN
China
Prior art keywords
dial
reflector
top plate
support
light
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202011023135.1A
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Chinese (zh)
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CN112572148B (en
Inventor
石原宏纪
池田亨
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Yazaki Corp
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Yazaki Corp
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Publication date
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Publication of CN112572148A publication Critical patent/CN112572148A/en
Application granted granted Critical
Publication of CN112572148B publication Critical patent/CN112572148B/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D13/00Component parts of indicators for measuring arrangements not specially adapted for a specific variable
    • G01D13/22Pointers, e.g. settable pointer
    • G01D13/26Pointers, e.g. settable pointer adapted to perform a further operation, e.g. making electrical contact
    • G01D13/265Pointers which conduct light
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B60K35/20Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor
    • B60K35/21Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor using visual output, e.g. blinking lights or matrix displays
    • B60K35/215Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor using visual output, e.g. blinking lights or matrix displays characterised by the combination of multiple visual outputs, e.g. combined instruments with analogue meters and additional displays
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B60K35/60Instruments characterised by their location or relative disposition in or on vehicles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60QARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q3/00Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors
    • B60Q3/10Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors for dashboards
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D11/00Component parts of measuring arrangements not specially adapted for a specific variable
    • G01D11/28Structurally-combined illuminating devices
    • GPHYSICS
    • G12INSTRUMENT DETAILS
    • G12BCONSTRUCTIONAL DETAILS OF INSTRUMENTS, OR COMPARABLE DETAILS OF OTHER APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G12B11/00Indicating elements; Illumination thereof
    • G12B11/02Scales; Dials
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/20Optical features of instruments
    • B60K2360/23Optical features of instruments using reflectors
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/20Optical features of instruments
    • B60K2360/33Illumination features
    • B60K2360/332Light emitting diodes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/20Optical features of instruments
    • B60K2360/33Illumination features
    • B60K2360/336Light guides
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/20Optical features of instruments
    • B60K2360/33Illumination features
    • B60K2360/34Backlit symbols
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/20Optical features of instruments
    • B60K2360/33Illumination features
    • B60K2360/345Illumination of controls

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Details Of Measuring Devices (AREA)
  • Instrument Panels (AREA)

Abstract

A meter device comprising: a housing (23), the housing (23) including a reflector portion (41) having a circular-shaped recess; the case (23) has a dial support (51) that supports the dial (24) at the center of the reflector (41), the dial support (51) has a disc-shaped top plate (52) that abuts the dial (24), and a plurality of support ribs (53) that are provided between the top plate (52) and the bottom of the reflector (41) and support the top plate (52), and the plurality of support ribs (53) are radially arranged in the radial direction centered on the base (35) of the pointer (34).

Description

Instrument device
Technical Field
The present invention relates to a meter device.
Background
In instrument devices used as instruments of various vehicles such as automobiles, ships, or airplanes, there is a device in which a light guide plate for guiding light from a light source is provided along the back surface of a dial, and numerals and scales on the dial are illuminated by irradiating the light guide plate (for example, refer to patent document 1 and patent document 2).
Patent document
[ patent document 1] JP-A-2001-
[ patent document 2] JP-A-2006-112984
Meanwhile, in the instruments described in patent document 1 and patent document 2, a light guide plate is required, and a plurality of light sources are also required in order to uniformly illuminate the entire area of the light guide plate with luminance, that is, a range of 360 degrees with respect to the rotation axis of the mechanism. Therefore, the cost may increase due to the increase in the number of parts and the complexity of the structure.
Disclosure of Invention
According to an embodiment of the present invention, a meter apparatus is capable of uniformly illuminating the entire area around a meter over a range of 360 degrees while reducing the complexity of its structure.
A meter device according to an embodiment of the present invention includes:
a housing including a reflector portion having a circular-shaped recess;
a dial mounted on the case to block the reflector portion;
a rotating shaft disposed in the center of the reflector;
a pointer having a light guiding property, configured with a base supported by a rotation shaft, and rotated along a surface of the dial by rotation of the rotation shaft; and
a light source that illuminates the pointer by allowing incidence to a base portion of the pointer, and irradiates light from the base portion to the reflector portion, in the meter device,
the case includes a dial support portion supporting the dial at the center of the reflector portion,
the dial support portion includes: a disc-shaped top plate portion abutting against the dial; and a plurality of support ribs which are provided between the top plate portion and the bottom portion of the reflector portion, and which support the top plate portion, and
the plurality of support ribs are radially arranged in a radial direction with the base of the pointer as a center.
Drawings
Fig. 1 is a front view of the meter device of the present embodiment.
Fig. 2 is a schematic cross-sectional view of a meter portion of the meter device.
Fig. 3 is a schematic cross-sectional view of a rotation shaft and its surroundings in a meter part of the meter device.
Fig. 4 is a front view of a case constituting the meter device.
Fig. 5 is a perspective view of a reflector portion formed on a housing.
Fig. 6 is a sectional view of a reflector portion formed on a housing.
Fig. 7 is a perspective view of a reflector portion according to a reference example.
Detailed Description
Specific embodiments according to the present invention will be described below with reference to the respective drawings.
Fig. 1 is a front view of a meter device 10 according to this embodiment.
As shown in fig. 1, the meter device 10 according to the present embodiment includes two meter parts 11. The meter device 10 is provided in a vehicle such as an automobile, and the meter section 11 on one side is a speedometer indicating a vehicle speed, and the meter section 11 on the other side is a tachometer indicating an engine speed. The meter device 10 further includes a display 13 and a plurality of display portions 15. The display 13 is formed of, for example, a Liquid Crystal Display (LCD), and displays various information such as a travel distance and information of a vehicle. The display unit 15 displays various information and warnings related to the vehicle, and displays the information by emitting light from a light source provided on the rear surface side.
Fig. 2 is a schematic cross-sectional view of the meter portion 11 of the meter device 10.
As shown in fig. 2, the meter device 10 has a back cover 21 on the back surface side, and a substrate 22 and a case 23 are fixed to the back cover 21. A sheet-like dial 24 is laminated on the front surface of the case 23, and the dial 24 is supported by the front surface of the case 23.
The light source 31 and the mechanism 32 are mounted on the substrate 22. The light source 31 mounted on the substrate 22 emits visible light, and for example, a Light Emitting Diode (LED) is used.
The mechanism 32 has a rotary shaft 33, and power of a stepping motor (not shown) provided inside the mechanism 32 is transmitted to the rotary shaft 33 via a reduction gear train (not shown). The rotating shaft 33 is formed of a translucent (or light-guiding) resin material having excellent light-guiding characteristics.
A pointer 34 is fixed to the rotary shaft 33, and when the rotary shaft 33 rotates, the pointer 34 integral with the rotary shaft 33 rotates. The pointer 34 is formed of an appropriate translucent (or light-guiding) resin material having excellent light-guiding characteristics, as in the case of the rotating shaft 33. The pointer 34 includes a base 35 fixed to the rotation shaft 33 and a needle portion 36 extending from the base 35.
Fig. 3 is a schematic cross-sectional view of the rotation shaft 33 and its periphery in the meter portion 11 of the meter device 10.
As shown in fig. 3, in the base portion 35, a fitting recess portion 37 is formed on the rotation shaft 33 side, and the other end portion of the rotation shaft 33 is fitted in the fitting recess portion 37. Therefore, the pointer 34 is fixed on the rotation shaft 33, and the needle portion 36 is rotated by the rotation of the rotation shaft 33. The base 35 of the pointer 34 includes a reflection surface 38 (see fig. 2) at the base of the needle 36. The base 35 of the pointer 34 includes a conical reflecting surface 39 at a position facing the fitting recess 37.
Since the rotary shaft 33 is disposed so that one end surface thereof faces the light source 31, the light L1, L2 from the light source 31 enters the rotary shaft 33. The lights L1, L2 guided from one end surface of the rotating shaft 33 to the rotating shaft 33 are guided from the other end surface of the rotating shaft 33 and the circumferential surface thereof to the pointer 34.
Fig. 4 is a front view of a case 23 constituting the meter apparatus 10.
As shown in fig. 4, the case 23 includes two reflector portions 41 forming the meter portion 11. The housing 23 includes, between the reflector portions 41, a display mounting recess 40 in which the display 13 is mounted, and a mounting hole 43 to which a display lamp such as a light emitting diode forming the plurality of display portions 15 is mounted.
Fig. 5 is a perspective view of the reflector portion 41 formed on the housing 23. Fig. 6 is a sectional view of the reflector portion 41 formed on the housing 23.
As shown in fig. 5 and 6, the reflector portion 41 is formed with a circular-shaped recess recessed rearward from the front plate portion 42 of the housing 23 in front view, and the reflector portion 41 includes a bottom wall portion 44 and a bottom wall portion 45. A circular opening 46 is formed in the center of the bottom wall 44.
The dial support portion 51 is provided at the center of the reflector portion 41. The dial support portion 51 includes a top plate portion 52 and a plurality of support ribs 53 that support the top plate portion 52. The top plate 52 is formed in a disc shape and is disposed at a position facing the opening 46 formed in the bottom wall 44. An insertion hole 55 through which the base 35 of the pointer 34 passes is formed in the center of the top plate portion 52, and a locking claw 56 is formed at an edge portion of the insertion hole 55.
A plurality of support ribs 53 are provided between the bottom wall portion 44 and the top plate portion 52, and the top plate portion 52 is supported on the bottom wall portion 44 by the support ribs 53. The surface of the top plate portion 52 supported by these support ribs 53 on the bottom wall portion 44 is arranged flush with the front plate portion 42 of the housing 23. In this example, five support ribs 53 are provided and arranged at equal intervals in the circumferential direction along the opening 46 of the bottom wall portion 44.
The support ribs 53 are formed in a plate shape and are radially arranged from the center of the reflector portion 41. The support rib 53 is provided upright from the bottom wall portion 44, and its upper portion is connected to the top plate portion 52. The upper portions of the support ribs 53 are continuously provided on the peripheral surface of the top plate portion 52. The width dimension of these support ribs 53 gradually increases from one end connected to the top plate portion 52 toward the other end connected to the bottom wall portion 44 as viewed from the side. Therefore, the cross-sectional area of the support rib 53 gradually increases from one end connected to the top plate portion 52 toward the other end connected to the bottom wall portion 44.
In the dial support portion 51 in which the top plate portion 52 is supported by the support ribs 53, a plurality of light transmission window portions 57 divided in the circumferential direction by the support ribs 53 are provided between the bottom wall portion 44 and the top plate portion 52.
The annular groove portion 61 is formed on the bottom wall portion 44 of the reflector portion 41. The annular groove portion 61 is formed in an annular shape between the peripheral wall portion 45 and the dial support portion 51. The annular groove portion 61 includes: the annular groove 61 has a flat bottom surface 62 and is parallel to the dial 24 mounted on the front plate 42 in the radial direction, and therefore the depth dimension thereof is the same in the radial direction. The peripheral wall 45 of the reflection portion 41 is formed perpendicular to the bottom surface 62 of the annular groove 61 formed in the bottom wall 44.
As shown in fig. 1 and 2, the sheet-like dial 24 is superposed on the front plate portion 42 so as to be mounted on the case 23. Therefore, almost the entire front surface of the case 23 including the reflector portion 41 is covered with the dial 24. The dial 24 is supported by abutting against the top plate 52 of the dial support portion 51 at the center position of the reflector portion 41. A part of the dial 24 abutting on the top plate portion 52 is locked by a locking claw 56 formed on the top plate portion 52.
The dial 24 is provided with a number N and a scale M indicating a vehicle speed and an engine rotation speed at a position covering the reflector portion 41 of the case 23, and light from the rear surface can be transmitted to the number N and the scale M. The scale M is formed in a ring shape connected in the circumferential direction. The dial 24 is obtained by, for example, printing an opaque light shielding layer on the resin sheet having a light guiding property except for the portion where the number N and the scale M are formed.
As shown in fig. 2, in the meter device 10 having the above-described configuration, light L1 guided from the light source 31 to a part of the pointer 34 via the rotary shaft 33 is reflected by the reflection surface 38 of the base portion 35 and then guided to the side of the needle portion 36, whereby the needle portion 36 is illuminated by emitting light accordingly.
The other light L2 introduced into the pointer 34 is reflected by the conical reflecting surface 39 of the base 35 and is radiated radially toward the peripheral edge around the axis of the rotating shaft 33. Light L2 radiated radially toward the peripheral edge is guided from the light transmission window 57 to the reflector 41 of the housing 23. The light L2 guided to the reflector portion 41 is reflected by the bottom surface 62 of the annular groove portion 61 of the reflector portion 41 and the peripheral wall portion 45 of the reflector portion 41, and then irradiated to the dial 24. The light L2 guided to the reflector portion 41 includes light reflected by the bottom surface 62 of the annular groove portion 61 of the reflector portion 41 and irradiated to the dial 24 and light directly irradiated to the dial 24.
Here, a plurality of support ribs 53 are provided around the base 35 of the pointer 34. However, the support ribs 53 are radially arranged in a radial direction centering on the base 35 of the pointer 34. Therefore, the light L2 from the base 35 of the pointer 34 is guided to the reflector portion 41 over the entire circumference without being blocked by the support ribs 53 as much as possible.
As described above, according to the meter apparatus 10 of the present embodiment, since the dial support portion 51 supporting the dial 24 is provided at the center of the reflector portion 41, the dial 24 attached to block the reflector portion 41 formed by the circular-shaped concave portion can be well supported at the center of the reflector portion 41. Therefore, the dial 24 is not recessed in the center of the reflector portion 41, so that the dial 24 can be smoothly mounted on the case 23, and the workability of mounting the dial 24 on the case 23 can be improved.
The dial support portion 51 supports a disc-shaped top plate portion 52 on which the dial 24 abuts, by a plurality of support ribs 53 radially arranged along a radial direction centered on the base portion 35 of the pointer 34. Therefore, the light L2 irradiated from the base 35 of the pointer 34 can be guided to the reflector portion 41 without being blocked by the support ribs 53 as much as possible, and the light L2 reflected by the reflector portion 41 can illuminate the dial 24 while reducing the luminance unevenness. Compared with a structure in which a light guide plate is arranged along the rear surface of the dial and is irradiated by a plurality of light sources to illuminate the dial, the dial can be illuminated without unevenness in brightness over 360 degrees with respect to the rotation shaft 33 of the mechanism 32, while reducing the number of parts and reducing the cost.
Here, although the brightness of the outer peripheral portion can be increased by making the annular groove portion 61 of the reflector portion 41 shallower toward the outer periphery, the shadow of the support rib 53 is more likely to be generated. Conversely, when the groove portion 61 of the reflector portion 41 is deeper toward the outer periphery, the brightness of the outer periphery is reduced.
In the meter apparatus 10 of the present embodiment, an annular groove portion 61 including a bottom surface 62 parallel to the dial 24 is formed around the dial support portion 51 at the bottom of the reflector portion 41. According to the meter apparatus 10, the light L2 irradiated from the base 35 of the pointer 34 is reflected by the bottom surface 62 parallel to the annular groove portion 61 of the dial 24 and the peripheral wall portion 45 perpendicular to the bottom surface 62, so that the dial 24 can be irradiated more favorably by reducing the brightness unevenness in the radial direction.
Since the reflector portion 41 includes the peripheral wall portion 45 perpendicular to the bottom surface 62 of the annular groove portion 61, the shadow formed by the support ribs 53 can be diluted by the light L2 reflected by the peripheral wall portion 45 perpendicular to the bottom surface 62 of the annular groove portion 61 and traveling radially inward.
According to the meter apparatus 10 of the present embodiment, since the width dimension of the support rib 53 in the radial direction centering on the base 35 of the pointer 34 gradually increases from the top plate portion 52 toward the base of the reflector portion 41, it is possible to reliably support the top plate portion 52 by increasing the strength of the support rib 53 while preventing obstruction of the light L2 as much as possible by reducing the thickness of the support rib 53.
The locking claw 56 formed on the top plate portion 52 is locked to the dial 24, so that the dial 24 can be easily held at the center of the reflector portion 41 by the top plate portion 52.
Next, a reference example of the reflector portion will be described.
Fig. 7 is a perspective view of a reflector portion according to a reference example.
As shown in fig. 7, in the reflector portion 71 of the reference example, a pointer portion 73 including a plurality of mounting holes 72 is protruded, and display lamps such as light emitting diodes are mounted on the plurality of mounting holes 72. A lock claw 74 for locking the dial is formed on the pointer section 73. On the reflector portion 71, the bottom surface 75 is gradually inclined toward the driver side in the radial direction toward the outer side.
In the reference example, since the pointer section 73 protrudes in the reflector section 71, it is impossible to irradiate the entire area of the communication direction in the reflector section 71, and thus the illumination range is narrowed and the illumination effect is limited. In this reference example, since the bottom surface 75 of the reflector portion 71 is gradually inclined toward the driver side toward the outside in the radial direction, the light irradiating the dial is not uniform in the radial direction, and thus the luminance is lowered. Non-uniformity occurs.
The present invention is not limited to the above-described embodiments, and modifications and improvements can be appropriately made, and materials, shapes, dimensions, numbers, positions, and the like of the respective members in the above-described embodiments can be freely selected and are not limited as long as the present invention can be achieved.
For example, in the above-described embodiment, although the case where five support ribs 53 are provided has been described, the number of support ribs 53 is not limited to five as long as a plurality of support ribs 53 are provided. The optimum number of the support ribs 53 is five, and by providing five support ribs 53, the top plate portion 52 can be supported well while preventing obstruction of light.
Although the above-described embodiment describes the structure in which the dial 24 is locked by the locking claws 56 provided on the top plate portion 52, the dial 24 may be fixed to the top plate portion 52 by other fixing methods. For example, as another fixing method, a method is proposed in which the dial 24 is bonded and fixed to the top plate portion 52 by an adhesive material.
Although the above-described embodiment describes the structure in which the two meter parts 11 are formed so as to cover the two reflector parts 41 with one dial 24, the two reflector parts 41 may be covered with the two dials 24, respectively. In the case where two reflector portions 41 are covered with one dial 24, the number of dials 24 can be reduced, thereby reducing the cost.
[1] The meter device includes:
a housing (23) including a reflector portion (41) having a circular-shaped recess;
a dial (24) mounted on the case (23) to block the reflector portion (41);
a rotating shaft (33) disposed in the center of the reflector section (41);
a pointer (34) having a light guide property, provided with a base (35) supported by the rotating shaft (33), and rotated along the surface of the dial (24) by the rotation of the rotating shaft (33); and
a light source (31) that causes the pointer (34) to emit light by allowing light to enter a base (35) of the pointer (34), and irradiates the light from the base (35) to the reflector section (41), wherein
The case (23) includes a dial support (51) that supports the dial (24) at the center of the reflector (41),
the dial support (51) comprises: a disc-shaped top plate (52) that abuts the dial (24); and a plurality of support ribs (53) which are provided between the top plate section (52) and the bottom section of the reflector section (41), support the top plate section (52), and
the plurality of support ribs (53) are radially arranged around the base (35) of the pointer (34).
According to the meter apparatus having the above configuration [1], since the dial support portion for supporting the dial is provided at the center of the reflector portion, the dial attached so as to block the reflector portion formed by the circular recess can be supported well at the center of the reflector portion. Therefore, the dial is not recessed in the center of the reflector portion, so that the dial can be smoothly mounted on the case, and the workability of mounting the dial on the case can be improved.
The dial support portion supports a disc-shaped top plate portion on which the dial is abutted by a plurality of support ribs radially arranged along a radial direction centered on a base portion of the pointer. Therefore, the light irradiated from the base of the pointer can be guided to the reflector portion without being blocked by the support ribs as much as possible, and the light reflected by the reflector portion can illuminate the dial while reducing the luminance unevenness. Compared with a structure in which a light guide plate is disposed along the rear surface of the dial and the light guide plate is illuminated by a plurality of light sources to illuminate the dial, the dial can be illuminated without unevenness in brightness, while reducing the number of parts and reducing the cost.
[2] In the case of the instrument set, the instrument set is,
an annular groove portion (61) having a bottom surface (62) parallel to the dial (24) may be formed on the bottom of the reflector portion (41) around the dial support portion (51), and
the reflector portion (41) may include a peripheral wall portion (45) perpendicular to a bottom surface (62) of the annular groove portion (61).
According to the meter apparatus having the above configuration [2], the light irradiated from the base of the pointer is reflected by the bottom surface of the annular groove portion parallel to the dial and the peripheral wall portion perpendicular to the bottom surface. So that the unevenness of brightness in the radial direction can be reduced and the dial can be illuminated well. In particular, the shadow formed by the support rib can be reduced by light that is reflected by the peripheral wall portion perpendicular to the bottom surface of the annular groove portion and moves radially inward.
[3] In the case of the instrument set, the instrument set is,
the width dimension of the support rib (53) in the radial direction may gradually increase from the top plate portion toward the bottom of the reflector portion (41).
According to the meter apparatus having the above structure [3], the width dimension of the support rib in the radial direction gradually increases from the top plate portion toward the bottom of the reflector portion, and therefore, it is possible to reliably support the top plate portion by increasing the strength of the support rib while preventing obstruction of light as much as possible by reducing the thickness of the support rib.
[4] In the case of the instrument set, the instrument set is,
a locking claw (56) for locking the dial (24) may be formed on the top plate (52).
According to the meter apparatus having the above configuration [4], the locking claw formed on the top plate portion is locked to the dial, so that the dial can be easily held at the center of the reflector portion by the top plate portion.
According to the present invention, it is possible to provide a meter apparatus capable of uniformly irradiating the entire area around a meter over a range of 360 degrees without unevenness in brightness while reducing the complexity of the structure thereof.

Claims (4)

1. A meter device comprising:
a housing including a reflector portion having a circular-shaped recess;
a dial mounted on the case to block the reflector portion;
a rotating shaft disposed in the center of the reflector;
a pointer having a light guiding property, configured with a base supported by the rotation shaft, and rotated along a surface of the dial by rotation of the rotation shaft; and
a light source that causes the pointer to emit light by allowing the light to be incident on the base portion of the pointer, and irradiates the light from the base portion to the reflector portion, wherein
The case includes a dial support portion supporting the dial at the center of the reflector portion,
the dial support portion includes: a disc-shaped top plate portion abutting against the dial; and a plurality of support ribs which are provided between the top plate portion and the bottom portion of the reflector portion, support the top plate portion, and
the plurality of support ribs are radially arranged in a radial direction with the base of the pointer as a center.
2. The gauge arrangement of claim 1, wherein
An annular groove portion having a bottom surface parallel to the dial is formed on the bottom of the reflector portion around the dial support portion, and
the reflector portion includes a peripheral wall portion perpendicular to the bottom surface of the annular groove portion.
3. A meter device according to claim 1 or 2, wherein
The width dimension of the support rib in the radial direction gradually increases from the top plate portion toward the bottom of the reflector portion.
4. A meter device according to any one of claims 1 to 3, wherein
A locking claw for locking the dial is formed on the top plate portion.
CN202011023135.1A 2019-09-30 2020-09-25 Meter device Active CN112572148B (en)

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JP2019180156A JP7136758B2 (en) 2019-09-30 2019-09-30 meter device
JP2019-180156 2019-09-30

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JP2018004303A (en) * 2016-06-28 2018-01-11 日本精機株式会社 Instrument device

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JP2006112984A (en) 2004-10-18 2006-04-27 Denso Corp Dial fixing structure of instrument

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Publication number Priority date Publication date Assignee Title
CN102416873A (en) * 2010-09-14 2012-04-18 本田技研工业株式会社 Vehicle meter device
CN103597323A (en) * 2011-06-06 2014-02-19 矢崎总业株式会社 Lighting structure for meter device
JP2013088351A (en) * 2011-10-20 2013-05-13 Yazaki Corp Meter device
JP2014035298A (en) * 2012-08-09 2014-02-24 Yazaki Corp Illumination structure of meter device
CN105093386A (en) * 2014-05-19 2015-11-25 矢崎总业株式会社 Liquid crystal display device and vehicle measuring instrument
WO2017018196A1 (en) * 2015-07-27 2017-02-02 日本精機株式会社 Display device
CN106915256A (en) * 2015-12-28 2017-07-04 马涅蒂-马瑞利公司 It is especially suitable for the indicator device for indicator gauges of vehicle
JP2018004303A (en) * 2016-06-28 2018-01-11 日本精機株式会社 Instrument device

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DE102020123511B4 (en) 2024-03-21
DE102020123511A1 (en) 2021-04-01
JP7136758B2 (en) 2022-09-13
JP2021056121A (en) 2021-04-08
CN112572148B (en) 2024-03-08

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