JP2016003999A - Luminous pointer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a luminous pointer which allows a pointer body to emit light over the entire length of the pointer body.SOLUTION: In the luminous pointer including a translucent pointer body 10 including an indication part 12 indicating a rotation center area R and a measurement value display part and an extension part 18 continuously extending from the rotation center area R in a direction coaxial with the axial direction X of the indication part 12 and a pedestal member 30 including light guide means 62 for guiding illumination light to the pointer body 10, in a non-translucent cover member 20 covering the pointer body 10, the light guide means 62, and a shield member 70, a slit 21a for exposing the front surface of the pointer body 10 is provided. The light guide means 62 includes a light-receiving part 63 receiving the illumination light, a first light guide part 64 for guiding the illumination light to the indication part 12, and a second light guide part 65 for guiding the illumination light to the extension part 18. In the second light guide part 65, a light emission part 65c emitting the illumination light to the extension part 18 is provided. The light emission part 65c is extended along the coaxial direction, so as to face the extension part 18.

Description

  The present invention relates to a light emission indicator mounted on a vehicle meter provided in various vehicles.

  Conventionally, as this kind of light emission guideline, for example, the one described in Patent Document 1 below is known. The light emission pointer described in Patent Document 1 is a light-transmitting pointer main body having a rotation center region and an instruction section for indicating a measurement value display section provided on a display board, and illumination so that the pointer main body emits light. A pedestal member having a light guide means for guiding light to the pointer main body and a non-translucent pedestal portion positioned around the light guide means, the guide member provided in the rotation center region of the pointer main body and the pedestal member; A non-translucent cover member that covers the light means and the pedestal portion is provided with a slit that exposes the front surface of the rotation center region of the front surface of the pointer main body. Further, in this case, the pointer main body is provided with a terminal portion (extension portion) that extends continuously from the rotation center region in the axial direction of the pointing portion.

JP 2002-71396 A

By the way, in the light emission pointer described in Patent Document 1 described above, when the distal end portion (extension portion) of the pointer main body is not exposed from the slit and is covered with a non-translucent cover member, the indication portion In the pointer main body composed of the rotation center region and the end portion, only the indicator portion and the rotation center region excluding the end portion receive illumination light and emit light, and the pointer main body emits light over its entire length. There was no room for further improvement in this regard.
SUMMARY OF THE INVENTION In order to address the above-described problems, an object of the present invention is to provide a light emission pointer capable of causing a pointer main body to emit light over its entire length.

  The present invention is a translucent pointer main body having a rotation center region and an indication portion for indicating a measurement value display portion, and an extension portion extending continuously from the rotation center region in the axial direction and the coaxial direction. A light emitting pointer comprising a pedestal member having a light guiding means for guiding illumination light to the pointer main body so that the pointer main body emits light, wherein the rotation center region, the extension portion, and the light guiding means are at least A non-translucent cover member for covering is provided with a slit for exposing at least the front surface of the rotation center region and the front surface of the extension portion of the front surface of the pointer body, and the light guide means receives illumination light. A light receiving unit, a first light guide unit for guiding illumination light to the instruction unit, and a second light guide unit for guiding illumination light to the extension unit, and the second light guide unit includes: Illumination introduced into the second light guide through the light receiver. Light emitting portion for emitting light to the extension portion is provided, the light emitting unit is characterized in that said extending along the coaxial direction to face the extended portion.

  In the present invention, the second light guide portion may be configured to cause the illumination light introduced into the second light guide portion through the light receiving portion to be reflected and guided toward the outside of the rotation center region. And a second reflecting portion that guides the illumination light reflected and guided by the first reflecting portion to the light emitting portion, and a balancer for maintaining a weight balance when the light emission indicator is rotationally driven. And an auxiliary reflecting portion that is held by a receiving portion provided on the base member and is provided so as to correspond to the second reflecting portion.

  ADVANTAGE OF THE INVENTION According to this invention, the light emission pointer which can achieve an initial objective and can make a pointer main body light-emit over the full length can be provided.

The perspective view which shows each part which comprises the light emission pointer by embodiment of this invention. Sectional drawing of the light emission pointer by the same embodiment. The front view of the base member by the embodiment.

  Hereinafter, an embodiment in which the present invention is applied to a light emission indicator mounted on a vehicle meter will be described with reference to FIGS.

  1 and 2, the light emission pointer according to the present embodiment closes a translucent pointer main body 10, a cover member 20 that covers the front and sides of the pointer main body 10, and a rear side opening of the cover member 20. The pedestal member 30 and the balancer 40 for maintaining the weight balance during the rotation driving of the light emitting pointer are arranged on the rotary shaft 51 provided in the pointer driving means 50 including a movable magnet type instrument or a stepping motor. It is mounted and is rotated about an axis on a display board (not shown) in conjunction with the rotation shaft 51.

  The pointer main body 10 is formed of a translucent synthetic resin material, and is substantially orthogonal to a base 11 having a rotation center region R and an extension portion described later, and a rotation center axis RA that is coaxial with the axis of the rotation shaft 51. The indicator 12 extends in a direction (long line) in the direction, and the indicator 12 indicates a measurement value display unit (not shown) such as a scale provided on the display board.

  In this case, the base 11 is formed with a notch 13 corresponding to a light guide means (described later) provided in the base member 30, and the first light incident part 14 and the first light entrance 14 are formed on the inner surface of the notch 13. 2 light incident portions 15 are formed.

  The first light incident portion 14 is a standing wall surface provided along the rotation center axis RA, and is located at a boundary portion between the base portion 11 and the instruction portion 12. The second light incident portion 15 is a flat surface provided along the axial direction X of the instruction portion 12, and is located on the back surface of the base portion 11.

  In the rotation center region R, a bulging portion 16 corresponding to the shape of the light guide means is provided. The bulging portion 16 includes a substantially circular flange portion extending to the side of the second light incident portion 15 corresponding to the rotation center region R, and includes two positioning pins corresponding to the positioning pins described later provided on the base member 30. It has a hole 17.

  Reference numeral 18 denotes an extension that continuously extends from the rotation center region R in the same direction as the axial direction X of the indicator 12, and the extension 18 provided on the rear end side of the pointer main body 10 includes the rotation center region R. It is located on the opposite side of the instruction unit 12 across

  It should be noted that a hot stamp layer such as white is provided on at least one of the front surface of the pointer main body 10 (the base portion 11 and the instruction portion 12) and the rear surface of the instruction portion 12 and the light incident portions 14 and 15. (Not shown) may be formed.

  The cover member 20 is formed of a non-translucent (for example, black) synthetic resin material, and covers a required portion of the pointer main body 10 and the pedestal member 30 (here, the light guide means and a shielding member described later). And includes a front wall 21 that covers the front of the pointer body 10 and a peripheral wall 22 that covers the side of the pointer body 10, and the bottom side of the peripheral wall 22 that is opposite to the front wall 21 is open. doing.

  The front wall portion 21 provided in the cover member 20 is provided with a slit 21 a for exposing the front surface of the pointer main body 10 (the front surface of the base portion 11 and the front surface of the instruction portion 12), and on the inner wall surface of the peripheral wall portion 22. Is provided with a pair of locking claws 22a which are fitted to a pedestal portion described later provided in the pedestal member 30.

  The pedestal member 30 is provided integrally with the translucent member 60 by two-color molding using a translucent member 60 formed of a translucent resin material and a non-translucent (for example, black) synthetic resin. And a shielding member 70.

  The translucent member 60 has a substantially T-shaped cross section, and is disposed immediately below the base 11 in the pointer main body 10. The translucent member 60 includes a boss portion 61 having a through-hole portion 61a to which the rotation shaft 51 is attached (connected), and a guide extending from the front side of the boss portion 61 in a substantially disc shape with the rotation center axis RA as a center. Light means 62.

  The light guide means 62 has a function of guiding illumination light from a light source (not shown) to the pointer main body 10 so that the pointer main body 10 emits light. The light guide unit 62 includes a light receiving unit 63 provided at the bottom of the light guide unit 62 so as to receive illumination light from the light source, and between the light receiving unit 63 and the second light incident unit 15. A substantially fan-shaped first light guide part 64 and a second light guide part 65 are provided.

  As shown in FIG. 3, the first light guide portion 64 and the second light guide portion 65 pass through the through-hole portion 61a and center on a virtual center line Y that extends in a direction orthogonal to the axial direction X of the indication portion 12. The surface portion of the light guide means 62 that is line-symmetric and located between the first light guide portion 64 and the second light guide portion 65 is formed as a flat plate surface portion 66.

  Further, in this case, the first light guide part 64 for guiding the illumination light to the instruction part 12 side is located on the side close to the instruction part 12 (the tip side from the rotation center axis R), and the illumination light is on the extension part 18 side. The second light guide portion 65 for guiding to the position is located at a position relatively far from the instruction portion 12 (the rear end side with respect to the rotation center axis RA).

  The first light guide unit 64 includes a reflection surface 64a having an inclined surface shape for reflecting and guiding the illumination light introduced into the first light guide unit 64 through the light receiving unit 63 toward the instruction unit 12, and the reflection. There is provided a light exit surface 64b formed of a standing wall surface that radiates illumination light (hereinafter referred to as first illumination light) reflected in the axial direction X of the indicator 12 through the surface 64a.

  The light exit surface 64b corresponds to (facing with) the first light incident portion 14 of the pointer main body 10, and supplies the first illumination light to the instruction portion 12 through the light exit surface 64b. The instruction unit 12 of the pointer main body 10 emits light when the first illumination light is supplied to the instruction unit 12 and mainly illuminates the region of the instruction unit 12 located on the tip side of the notch 13. It has become.

  On the other hand, the second light guide portion 65 has an inclined surface shape for reflecting and guiding the illumination light introduced into the second light guide portion 65 through the light receiving portion 63 toward the outside of the rotation center region R. From the first reflecting portion 65a and the curved shape that guides the illumination light reflected and guided by the first reflecting portion 65a (hereinafter referred to as second illumination light) to the extension portion 18 (light emitting portion described later). The second reflection portion 65b and the light receiving portion 63 are introduced into the second light guide portion 65, and the first and second reflection portions 65a and 65b are reflected and guided to the extension portion 18 side. A light emitting part 65c for emitting two illumination lights to the extension part 18 is provided.

  In other words, the first reflecting portion 65a reflects and guides the illumination light introduced into the second light guiding portion 65 through the light receiving portion 63 toward the second reflecting portion 65b. The reflecting portion 65b is provided in the optical path of the second illumination light from the first reflecting portion 65a to the light emitting portion 65c, faces the first reflecting portion 65a, and is reflected by the first reflecting portion 65a. The reflected second light is reflected and guided to the light emitting part 65c side.

  The light emitting portion 65c extends along the axial direction X so as to correspond (face to) the extending portion 18 of the base portion 11, and extends through the first and second reflecting portions 65a and 65b. The second illumination light reflected and guided to the 18 side is supplied to the extension 18. The extension 18 receives the second illumination light from the light emitting portion 65c facing the extension 18 and emits light.

  The shielding member 70 is formed of a closing member formed of a black synthetic resin material disposed in the bottom side opening so as to close the bottom side opening of the peripheral wall portion 22, and is an elongated thin plate-like shape that holds the indication unit 12. A holding portion 71, a pedestal portion 72 located around the light guide means 62 (periphery of the back side), and a receiving portion 73 for fixing and holding the balancer 40, the receiving portion 73 and the second reflecting portion 65 b. A balancer 40 is disposed in a space formed between the two.

  The holding unit 71 is configured to cover the instruction unit 12 from behind, and functions as a light leakage prevention member that prevents the first illumination light reflected to the instruction unit 12 side from leaking to the rear side of the instruction unit 12. Have.

  The pedestal portion 72 has a substantially annular shape so as to surround the light guide means 62, and the pedestal portion 72 is provided so as to correspond to the hole portion 17 provided in the pointer main body 10 as shown in FIG. 3. A pair of positioning pins 74 and a light amount adjustment unit 75 provided on the plate surface portion 66 of the light guide unit 62 along the virtual center line Y are provided, and each positioning pin 74 is inserted into each hole 17. Thus, the pointer main body 10 and the base member 30 are positioned.

  The light amount adjustment unit 75 is formed of a black synthetic resin material, and includes a light shielding unit provided integrally with the pedestal unit 72 along the virtual center line Y. Specifically, the light amount adjusting portion 75 here is formed at two locations between the through-hole portion 61a and the pair of positioning pins 74 so as to avoid the through-hole portion 61, and the shape thereof is both the through-hole portion 61a. As it goes from the side toward the positioning pin 74 side, it has a divergent shape.

  In the light amount adjusting unit 75, a part of the illumination light supplied into the light guiding unit 62 through the light receiving unit 63 directly passes through the first light incident unit 15 corresponding to the bulging unit 16 (that is, the rotation center region R). This serves to prevent illumination, so that the rotation center region R does not become excessively brighter than the other regions (indicator 12 and extension 18) of the pointer body 10 excluding the rotation center region R. It has become.

  In other words, this means that the light amount adjusting unit 75 illuminates light (hereinafter referred to as third lens) introduced into the rotation center region R so that the illumination balance among the instruction unit 12, the rotation center region R, and the extension unit 18 is maintained. This means that the amount of light (referred to as illumination light) is adjusted. As a result, the rotation center region R positioned immediately above the second light incident portion 15 corresponding to the bulging portion 16 is supplied with the third illumination light to the rotation center region R, so that the indication unit 12 and the extension portion 12 are extended. Light is emitted so as not to be brighter than the portion 18, the illumination balance of the entire length of the pointer main body 10 is kept uniform, and light emission unevenness of the pointer main body 10 can be suppressed.

  In the case of this example, the light source is composed of white LEDs respectively disposed immediately below the two light amount adjustment units 75, and the front surface of the pointer body 10 exposed from the slit 21a emits white light when the light sources emit light. .

  The balancer 40 is obtained by processing a plate material having a metallic luster such as brass or aluminum, and a back surface portion thereof is held by a receiving portion 73 provided on the pedestal member 30.

  Reference numeral 41 denotes an auxiliary reflection surface (auxiliary reflection portion) having a curved surface provided so as to correspond to the second reflection portion 65b. The auxiliary reflection surface 41 provided in the balancer 40 is the second reflection portion. A part of the second illumination light that has been transmitted through the second reflecting portion 65b without being reflected by 65b is reflected. This assists in the reflection of light at the second reflecting portion 65b and increases the amount of the second illumination light emitted from the light emitting portion 65c, so that the decrease in the light emission luminance at the extension portion 18 can be suppressed as much as possible. it can.

  Next, an example of assembling the light emission pointer in this embodiment will be described. First, the cover member 20 in which the top and bottom are inverted (that is, the cover member 20 in which the slit 21a is located on the lower end side) and the pointer main body 10 that is similarly vertically inverted (that is, the indication unit). 12 and the pointer main body 10 with the back surface positioned on the upper side, and the pointer main body 10 with the cover member so that the front surface of the pointer main body 10 (the instruction portion 12, the rotation center region R, and the extension portion 18) faces the slit 21a. Set within 20.

  Subsequently, a pedestal member 30 (the pedestal member 30 with the boss portion 61 positioned on the upper side) in which the balancer 40 is attached to the space and is vertically inverted is prepared. The pedestal member 30 and the pointer main body 10 accommodated in the cover member 20 are aligned so that the holding portion 71 and the instruction portion 12 and the positioning pin 74 and the hole portion 17 face each other.

  Finally, the pedestal member 30 is pressed against the pointer main body 10 so as to close the bottom side opening of the peripheral wall portion 22. Then, the positioning pin 74 of the shielding member 70 is fitted into the hole portion 17 of the pointer main body 10, and the outer peripheral portion of the pedestal portion 72 is connected to the pair of locking claws 22 a provided on the inner wall surface of the second cover portion 22. As a result, the assembling of the light emitting pointer composed of the pointer main body 10, the cover member 20, the base member 30, and the balancer 40 is completed.

  As described above, in the present embodiment, the rotation center region R, the instruction unit 12 that indicates the measurement value display unit, and the extension unit 18 that extends continuously from the rotation center region R in the axial direction X and the axial direction X of the instruction unit 12. A light-emitting pointer comprising a light-transmitting pointer main body 10 having a light guide and a pedestal member 30 having a light guide means 62 for guiding illumination light to the pointer main body 10 so that the pointer main body 10 emits light. 10, the light guide means 62, and the shielding member 70 are provided with a slit 21 a that exposes the front surface of the pointer body 10, and the light guide means 62 receives the illumination light. Part 63, a first light guide part 64 for guiding the illumination light to the instruction part 12, and a second light guide part 65 for guiding the illumination light to the extension part 18. Was introduced into the second light guide unit 65 through the light receiving unit 63. Light emitting portion 65c for emitting the extension 18 is provided with a bright light, the light emitting unit 65c is for the extending along the coaxial direction so as to face the extending portion 18.

  Therefore, the indicator 12 of the pointer body 10 emits light when the first illumination light is supplied to the indicator 12, and the rotation center region R of the pointer body 10 is supplied with the third illumination light to the rotation center region R. The extension portion 18 of the pointer main body 10 that emits light at a position opposite to the indication portion 12 with the rotation center region R interposed therebetween is the second illumination from the light emitting portion 65c facing the extension portion 18. Since it emits light upon receiving light, it is possible to provide a light emission pointer capable of emitting light over the entire length of the pointer main body 10 constituted by the indication portion 12, the rotation center region R, and the extension portion 18.

  Further, in the present embodiment, the first light guide 65 causes the second light guide 65 to reflect and guide the illumination light introduced into the second light guide 65 through the light receiver 63 toward the outside of the rotation center region R. Part 65a and a second reflecting part 65b for guiding the illumination light reflected and guided by the first reflecting part 65a (second illumination light) to the light emitting part 65c are provided, and the light emission indicator is driven to rotate. The balancer 40 for maintaining the weight balance is provided with an auxiliary reflecting surface (auxiliary reflecting portion) 41 that is held by a receiving portion 73 provided on the pedestal member 30 and is provided so as to correspond to the second reflecting portion 65b. As a result, the reflection of light at the second reflecting portion 65b is assisted and the amount of the second illumination light emitted from the light emitting portion 65c is increased, so that the decrease in the emission luminance at the extending portion 18 is suppressed as much as possible. be able to.

  In the present embodiment, the cover member 20 covers the pointer main body 10 (the base portion 11 and the instruction portion 12), the light guide unit 62, and the shielding member 70, but the peripheral wall that covers the instruction portion 12 as the cover member 20. A cover member in which 22 portions are eliminated is employed, and the cover member covers the base 11, the light guide means 62, the pedestal portion 72, and the receiving portion 73 (at least the rotation center region R, the extension portion 18, and the light guide means 62). May be configured to cover the

  In this case, the cover member is provided with a slit that exposes the front surface of the base portion 11 (ie, the front surface of the rotation center region R and the front surface of the extension portion 18) among the front surfaces of the pointer main body 10, and the indication portion 12. The holding part 71 will also be abolished in connection with the abolition of the 22 surrounding wall parts which cover the.

DESCRIPTION OF SYMBOLS 10 Pointer main body 11 Base part 12 Instruction part 18 Extension part 20 Cover member 21a Slit 30 Base member 40 Balancer 41 Auxiliary reflective surface (auxiliary reflective part)
60 light transmissive member 62 light guide portion 63 light receiving portion 64 first light guide portion 65 second light guide portion 65a first reflection portion 65b second reflection portion 65c light emitting portion 70 shielding member R rotation center region RA rotation center axis X axis direction Y virtual center line

Claims (2)

A light-transmitting pointer main body having a rotation center region and an indication unit for indicating a measurement value display unit, and an extension portion extending continuously from the rotation center region in the axial direction and the coaxial direction;
In a light emitting pointer comprising a pedestal member having a light guiding means for guiding illumination light to the pointer main body so that the pointer main body emits light,
A non-translucent cover member that covers at least the rotation center region, the extension, and the light guide means exposes at least the front surface of the rotation center region and the front surface of the extension portion of the front surface of the pointer body. A slit is provided,
The light guide means includes a light receiving unit that receives illumination light, a first light guide unit that guides illumination light to the instruction unit, and a second light guide unit that guides illumination light to the extension unit. And
The second light guide part is provided with a light emitting part that emits illumination light introduced into the second light guide part through the light receiving part to the extension part,
The light emitting pointer, wherein the light emitting portion extends along the coaxial direction so as to face the extension portion. The second light guide unit includes a first reflection unit that reflects and guides illumination light introduced into the second light guide unit through the light receiving unit toward the outside of the rotation center region, and the first light guide unit. A second reflecting portion that guides the illumination light reflected and guided by the reflecting portion to the light emitting portion, and
A balancer for maintaining a weight balance during rotation of the light emitting pointer is supported by a receiving portion provided on the pedestal member, and includes an auxiliary reflecting portion provided to correspond to the second reflecting portion. The light emission guide according to claim 1.

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