WO2016152521A1 - Luminous pointer and pointer-type measuring device provided with luminous pointer - Google Patents
Luminous pointer and pointer-type measuring device provided with luminous pointer Download PDFInfo
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- WO2016152521A1 WO2016152521A1 PCT/JP2016/057343 JP2016057343W WO2016152521A1 WO 2016152521 A1 WO2016152521 A1 WO 2016152521A1 JP 2016057343 W JP2016057343 W JP 2016057343W WO 2016152521 A1 WO2016152521 A1 WO 2016152521A1
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- light
- pointer
- illumination light
- light guide
- light receiving
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING 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
- G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
- G01D11/28—Structurally-combined illuminating devices
Definitions
- the present invention relates to a light emitting type pointer in which a pointer shines and a pointer type instrument device provided with the light emitting type pointer.
- Patent Literature 1 discloses the device. As shown in FIG. 5, such a pointer-type instrument device receives illumination light from the light guide by the light guide member 23 of the pointer 20 and shines the indicating member 21 of the pointer 20.
- the light guide member 23 of the pointer 20 has a boss portion 23 into which the rotation shaft of the pointer drive portion is press-fitted.
- the illumination light L incident from the boss portion 23a is sequentially reflected by the reflecting surface 23c, the reflecting surface 23d, and the reflecting surface 23e, and is irradiated onto the light receiving surface 21d of the pointing member 21.
- the illumination light L3 emitted from the reflecting surface 23c without being reflected by the reflecting surface 23c passes through the light receiving surface 21d and passes from the lower surface to the upper surface of the indicating member 21, so that part of the indicating member 21 ( There is a problem that the portion directly above the boss portion 23a becomes particularly bright and uneven brightness occurs.
- the present invention has been made in view of this problem, and provides a light-emitting pointer and a pointer-type instrument device with less luminance unevenness of an indicating member.
- the present invention includes a light guide member 23 having a light receiving portion 23a for receiving illumination light, an indicator member 21 having a light receiving surface 21d for receiving the illumination light from the light guide member 23 and shining with the illumination light,
- the light guide 20 is rotated by the pointer drive unit 30, and the light guide member 23 reflects the illumination light received by the light receiving unit 23 a toward the rear end of the indicating member 21.
- the member 21 includes an indicator main body 21a made of a translucent material, a transflective layer 21b formed on a lower surface of the indicator main body 21a and reflecting the illumination light incident from the light receiving surface 21d, and the transflective layer 21b Underside of A shielding layer 23c that blocks part of the illumination light emitted without being reflected by the is formed in part the first reflecting surface 23c, and has a.
- the present invention also includes a light emitting pointer 20, a light emitting element 80a that emits illumination light for illuminating the light emitting pointer 20, a light guide 50 that guides the illumination light to the light emitting pointer 20, and rotation.
- a pointer-type instrument device that includes a pointer driving unit 30 that rotates the light-emitting pointer 20 via an axis S, and the light-emitting pointer 20 receives the illumination light from the light guide 50.
- a light guide member 23 having a light receiving portion 23a, and an instruction member 21 having a light receiving surface 21d for receiving the illumination light from the light guide member 23 and shining by the illumination light.
- the indicating member 21 includes an indicating body 21a made of a translucent material, a transflective layer 21b that is formed on a lower surface of the indicating body 21a and reflects the illumination light incident from the light receiving surface 21d, and the transflective reflection A light shielding layer 21c that is formed on a part of the lower surface of the layer 21b and blocks a part of the illumination light emitted without being reflected by the first reflecting surface 23c.
- the light shielding layer formed on a part of the lower surface of the semi-transmissive reflective layer blocks a part of the illumination light emitted without being reflected by the first reflective surface, it is possible to reduce luminance unevenness.
- BB sectional drawing which shows embodiment of this invention.
- AA sectional drawing which shows embodiment same as the above.
- the principal part expanded sectional view which shows embodiment same as the above.
- the principal part enlarged view which shows embodiment same as the above.
- the principal part enlarged view which shows a prior art example.
- the pointer-type instrument device includes a display board 10, a pointer 20, a stepping motor 30, a circuit board 40, a light guide 50, a case body 60, and the like.
- the display board 10 has an indicator portion formed by printing a translucent colored layer, a light shielding layer, a light diffusion layer, etc. on a base material made of a translucent resin such as polycarbonate (PC).
- the indicator portion of the display board 10 is indicated by the indication member 21 of the pointer 20.
- the display panel 10 is formed with a circular opening 11 through which a boss 23a described later passes.
- the pointer 20 includes an instruction member 21, a pointer cap 22, a light guide member 23, and a light shielding member 27, and is rotated by a stepping motor 30 via a rotation axis S.
- the light shielding member 27 of the pointer 20 is made of an opaque resin and is integrally formed with the light guide member 23.
- the light shielding member 27 of the pointer 20 has a flange portion 27a, and the locking claw 22a of the pointer cap 22 is locked to the flange portion 27a.
- the stepping motor 30 has a bearing portion 31 that supports the rotation shaft S.
- the stepping motor 30 is mounted on the rear surface of the circuit board 40.
- the circuit board 40 is composed of a hard printed board in which a wiring pattern is formed on a flat glass epoxy base material.
- the bearing 31 of the stepping motor 30 is inserted through an opening 41 formed in the circuit board 40.
- Light emitting diodes 80a and 80c are mounted on the front surface of the circuit board 40.
- the light emitting diode 80a is a top-view type LED (Light Emitting Diode), and emits white illumination light.
- the light emitting diode 80c is a top-view type LED (Light-Emitting-Diode), emits white illumination light, and illuminates and transmits the indicator portion of the display panel 10.
- the light guide 50 is made of a translucent resin such as acrylic (PMMA) and has a shape that covers the bearing 31 of the stepping motor 30.
- the light guide 50 guides the illumination light emitted from the light emitting diode 80 a to the boss portion 23 of the pointer 20.
- the light guide 50 includes a light receiving part 51 and a support part 52.
- the support portion 52 of the light guide 50 has a protrusion 52 a that protrudes downward, and the light guide 50 is positioned on the circuit board 40 by inserting the protrusion 52 a into the circuit board 40. Yes.
- the light guide 50 has a through hole 55 through which the rotation shaft S of the stepping motor 30 passes.
- the light receiving portion 51 of the light guide 50 has a light incident surface 51a, an outer reflective surface 51b, and an inner reflective surface 51c.
- the upper end surface of the light guide 50 is a donut-shaped light exit surface 50d.
- the light exit surface 50 d of the light guide 50 is flat and faces the light receiving surface 23 g of the light guide member 23.
- the light exit surface 50d of the light guide 50 and the light receiving surface 23g of the pointer 20 are parallel to each other.
- the illumination light incident from the light incident surface 51a of the light guide 50 is reflected by the outer reflective surface 51b and the inner reflective surface 51c, and is irradiated from the light exit surface 50d to the light receiving surface 23g of the light guide member 23.
- a cylindrical light shielding portion 90 is integrally formed with the light guide 50.
- the cylindrical light shielding portion 90 has a cylindrical shape having the same central axis as the rotation axis S.
- the case body 60 is made of a white resin and includes a light shielding portion 61 and reflection portions 62 and 63.
- the light shielding portion 61 of the case body 60 prevents the illumination light emitted from the light emitting diode 80a from being applied to the indicator portion of the display panel 10, and prevents the illumination light emitted from the light emitting diode 80c from entering the pointer 20. It is a shading wall to prevent.
- the reflection part 62 of the case body 60 reflects the illumination light emitted from the light emitting diode 80 c to the reflection part 63.
- the reflection part 63 of the case body 60 further reflects the illumination light reflected by the reflection part 62 and irradiates the indicator part of the display panel 10.
- the indicating member 21 of the pointer 20 includes an indicating body 21a, a white layer 21b formed on the lower surface of the indicating body 21a, and a light shielding layer 21c formed on a part of the lower surface of the white layer 21b. .
- the indicator main body 21a of the indicator member 21 has a light receiving surface 21d on which illumination light from the light guide member 23 is incident.
- the indication member 21 of the pointer 20 rotates together with the rotation axis S to indicate the indicator portion of the display board 10.
- the pointer cap 22 is made of an opaque resin and is locked to the light shielding member 27 by a locking claw 22a.
- the light guide member 23 of the pointer 20 is made of a translucent resin such as polycarbonate (PC) and has a boss portion 23a and a reflection portion 23b.
- the boss portion 23a of the light guide member 23 has a substantially cylindrical shape, and the outer peripheral surface 23h of the boss portion 23a has a cylindrical surface.
- a hole 23k is formed in the boss portion 23a of the light guide member 23, and the rotation shaft S of the stepping motor 30 is press-fitted into the hole 23k.
- the lower end surface of the boss portion 23 a is a light receiving surface 23 g that receives illumination light from the light guide 50.
- the light receiving surface 23g of the boss portion 23a is a donut-shaped plane.
- the reflecting portion 23b of the pointer 20 has reflecting surfaces 23c, 23d, and 23e and is covered with the pointer cap 22.
- the illumination light L incident from the light receiving surface 23g of the boss portion 23a is sequentially reflected by the reflecting surface 23c, the reflecting surface 23d, and the reflecting surface 23e, and is irradiated onto the light receiving surface 21d of the pointing member 21. That is, the illumination light L incident from the boss portion 23a is reflected toward the rear end direction of the indicating member 21 by the reflecting surface 23c, reflected upward by the reflecting surface 23d, and received by the reflecting surface 23e. Reflected towards.
- the illumination light L incident on the pointing body 21a from the light receiving surface 21d is reflected by the white layer 21b, and the pointing body 21a shines.
- a part L1 of the illumination light emitted from the reflection surface 23c without being reflected by the reflection surface 23c is blocked by the light shielding layer 21c, and the other part L2 is transmitted through the white layer 21b and becomes bright of the indication member 21.
- the light shielding layer 21c formed on a part of the lower surface of the white layer 21b blocks a part L1 of the illumination light emitted without being reflected by the reflecting surface 23c. Unevenness can be reduced.
- the present invention is not limited to this embodiment, and various modifications are possible.
- a boss portion into which the rotation shaft S is press-fitted may be provided in the light shielding member 27.
- the present invention can be applied to a vehicle instrument device.
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- Details Of Measuring Devices (AREA)
Abstract
Provided are a luminous pointer and a pointer-type measuring device with reduced unevenness in the luminance of an indicator member. A light guide member 23 thereof has a light receiving portion 23a for receiving illuminating light. An indicator member 21 thereof has a light receiving surface 21d for receiving the illuminating light from the light guide member 23 and is illuminated by the illuminating light. The luminous pointer 20 is rotated by a pointer driving unit 30. The light guide member 23 has a first reflective surface 23c for causing the illuminating light received by the light receiving portion 23a to reflect and travel in a direction towards the rear-end of the indicator member 21, and second reflective surfaces 23d and 23e for guiding the illuminating light reflected by the first reflective surface 23c to the light receiving surface 21d of the indicator member 21. The indicator member 21 has: an indicator body 21a made of a translucent material; a semi-transmissive reflective layer 21b that is formed on the lower surface of the indicator body 21a and reflects the illuminating light that has entered through the light receiving surface 21d; and a light-blocking layer 21c that is formed on a portion of the lower surface of the semi-transmissive reflective layer 21b and blocks a portion of the illuminating light that has been emitted through the first reflective surface 23c without being reflected thereby.
Description
本発明は、指針が光輝する発光型指針及びその発光型指針を備えた指針式計器装置に関するものである。
The present invention relates to a light emitting type pointer in which a pointer shines and a pointer type instrument device provided with the light emitting type pointer.
従来より、導光体からの照明光を受光して、指針の指示部材が光輝する指針式計器装置が種々提案されており、例えば特許文献1に開示されている。斯かる指針式計器装置は、図5に示すように、導光体からの照明光を指針20の導光部材23で受光し、指針20の指示部材21を光輝させるものである。指針20の導光部材23は、指針駆動部の回動軸が圧入されるボス部23を有している。ボス部23aから入射した照明光Lは、順次、反射面23c,反射面23d,反射面23eによって反射され、指示部材21の受光面21dに照射される。
Conventionally, various pointer-type instrument devices in which illumination light from a light guide is received and a pointer indicating member shines have been proposed. For example, Patent Literature 1 discloses the device. As shown in FIG. 5, such a pointer-type instrument device receives illumination light from the light guide by the light guide member 23 of the pointer 20 and shines the indicating member 21 of the pointer 20. The light guide member 23 of the pointer 20 has a boss portion 23 into which the rotation shaft of the pointer drive portion is press-fitted. The illumination light L incident from the boss portion 23a is sequentially reflected by the reflecting surface 23c, the reflecting surface 23d, and the reflecting surface 23e, and is irradiated onto the light receiving surface 21d of the pointing member 21.
しかしながら、反射面23cによって反射されずに、反射面23cから出射した照明光L3は、受光面21dを経ることなく、指示部材21の下面から上面に抜けてしまうため、指示部材21の一部(ボス部23aの直上部)が特に明るくなり、輝度ムラが生じてしまうという問題を有していた。
本発明は、この問題に鑑みなされたものであり、指示部材の輝度ムラが少ない発光型指針及び指針式計器装置を提供するものである。 However, the illumination light L3 emitted from the reflectingsurface 23c without being reflected by the reflecting surface 23c passes through the light receiving surface 21d and passes from the lower surface to the upper surface of the indicating member 21, so that part of the indicating member 21 ( There is a problem that the portion directly above the boss portion 23a becomes particularly bright and uneven brightness occurs.
The present invention has been made in view of this problem, and provides a light-emitting pointer and a pointer-type instrument device with less luminance unevenness of an indicating member.
本発明は、この問題に鑑みなされたものであり、指示部材の輝度ムラが少ない発光型指針及び指針式計器装置を提供するものである。 However, the illumination light L3 emitted from the reflecting
The present invention has been made in view of this problem, and provides a light-emitting pointer and a pointer-type instrument device with less luminance unevenness of an indicating member.
本発明は、照明光を受光する受光部23aを有する導光部材23と、前記導光部材23からの前記照明光を受光する受光面21dを有し前記照明光によって光輝する指示部材21と、を備え、指針駆動部30によって回動される発光型指針20であって、前記導光部材23は、前記受光部23aにて受光した前記照明光を前記指示部材21の後端方向に反射させる第一の反射面23cと、前記第一の反射面23cで反射された前記照明光を前記指示部材21の前記受光面21dに導く第二の反射面23d,23eと、を有し、前記指示部材21は、透光性材料からなる指示本体21aと、前記指示本体21aの下面に形成され前記受光面21dから入射した前記照明光を反射させる半透過反射層21bと、前記半透過反射層21bの下面の一部に形成され前記第一の反射面23cで反射されずに出射した前記照明光の一部を遮る遮光層23cと、を有するものである。
The present invention includes a light guide member 23 having a light receiving portion 23a for receiving illumination light, an indicator member 21 having a light receiving surface 21d for receiving the illumination light from the light guide member 23 and shining with the illumination light, The light guide 20 is rotated by the pointer drive unit 30, and the light guide member 23 reflects the illumination light received by the light receiving unit 23 a toward the rear end of the indicating member 21. A first reflecting surface 23c; and second reflecting surfaces 23d and 23e for guiding the illumination light reflected by the first reflecting surface 23c to the light receiving surface 21d of the indicating member 21; The member 21 includes an indicator main body 21a made of a translucent material, a transflective layer 21b formed on a lower surface of the indicator main body 21a and reflecting the illumination light incident from the light receiving surface 21d, and the transflective layer 21b Underside of A shielding layer 23c that blocks part of the illumination light emitted without being reflected by the is formed in part the first reflecting surface 23c, and has a.
また、本発明は、発光型指針20と、前記発光型指針20を光輝させるための照明光を発する発光素子80aと、前記照明光を前記発光型指針20に導く導光体50と、回動軸Sを介して前記発光型指針20を回動させる指針駆動部30と、を備えた指針式計器装置であって、前記発光型指針20は、前記導光体50から前記照明光を受光する受光部23aを有する導光部材23と、前記導光部材23からの前記照明光を受光する受光面21dを有し前記照明光によって光輝する指示部材21と、を有し、前記導光部材23は、前記受光部23aにて受光した前記照明光を前記指示部材21の後端方向に反射させる第一の反射面23cと、前記第一の反射面23cで反射された前記照明光を前記指示部材21の前記受光面21dに導く第二の反射面23d,23eと、を有し、
前記指示部材21は、透光性材料からなる指示本体21aと、前記指示本体21aの下面に形成され前記受光面21dから入射した前記照明光を反射させる半透過反射層21bと、前記半透過反射層21bの下面の一部に形成され前記第一の反射面23cで反射されずに出射した前記照明光の一部を遮る遮光層21cと、を有するものである。 The present invention also includes alight emitting pointer 20, a light emitting element 80a that emits illumination light for illuminating the light emitting pointer 20, a light guide 50 that guides the illumination light to the light emitting pointer 20, and rotation. A pointer-type instrument device that includes a pointer driving unit 30 that rotates the light-emitting pointer 20 via an axis S, and the light-emitting pointer 20 receives the illumination light from the light guide 50. A light guide member 23 having a light receiving portion 23a, and an instruction member 21 having a light receiving surface 21d for receiving the illumination light from the light guide member 23 and shining by the illumination light. Includes a first reflecting surface 23c that reflects the illumination light received by the light receiving unit 23a toward the rear end of the indicating member 21, and the illumination light that is reflected by the first reflecting surface 23c. A second lead to the light receiving surface 21d of the member 21; A reflecting surface 23d, and 23e, the,
The indicatingmember 21 includes an indicating body 21a made of a translucent material, a transflective layer 21b that is formed on a lower surface of the indicating body 21a and reflects the illumination light incident from the light receiving surface 21d, and the transflective reflection A light shielding layer 21c that is formed on a part of the lower surface of the layer 21b and blocks a part of the illumination light emitted without being reflected by the first reflecting surface 23c.
前記指示部材21は、透光性材料からなる指示本体21aと、前記指示本体21aの下面に形成され前記受光面21dから入射した前記照明光を反射させる半透過反射層21bと、前記半透過反射層21bの下面の一部に形成され前記第一の反射面23cで反射されずに出射した前記照明光の一部を遮る遮光層21cと、を有するものである。 The present invention also includes a
The indicating
半透過反射層の下面の一部に形成された遮光層によって、第一の反射面で反射されずに出射した照明光の一部を遮るため、輝度ムラを少なくすることができる。
Since the light shielding layer formed on a part of the lower surface of the semi-transmissive reflective layer blocks a part of the illumination light emitted without being reflected by the first reflective surface, it is possible to reduce luminance unevenness.
以下、添付図面に基づいて、本発明の一実施形態を説明する。指針式計器装置は、表示板10,指針20,ステッピングモータ30,回路基板40,導光体50,ケース体60等を備えている。
Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. The pointer-type instrument device includes a display board 10, a pointer 20, a stepping motor 30, a circuit board 40, a light guide 50, a case body 60, and the like.
表示板10は、ポリカーボネート(PC)等の透光性樹脂からなる基材に透光性着色層,遮光層,光拡散層等を印刷することによって指標部を形成したものである。表示板10の指標部は、指針20の指示部材21によって指示される。表示板10には、後述するボス部23aが貫通する円形の開口部11が形成されている。
The display board 10 has an indicator portion formed by printing a translucent colored layer, a light shielding layer, a light diffusion layer, etc. on a base material made of a translucent resin such as polycarbonate (PC). The indicator portion of the display board 10 is indicated by the indication member 21 of the pointer 20. The display panel 10 is formed with a circular opening 11 through which a boss 23a described later passes.
指針20は、指示部材21,指針キャップ22,導光部材23,遮光部材27を有しており、回動軸Sを介して、ステッピングモータ30によって回動される。指針20の遮光部材27は、不透明な樹脂からなり、導光部材23と一体成型されている。指針20の遮光部材27はフランジ部27aを有しており、このフランジ部27aに指針キャップ22の係止爪22aが係止されている。
The pointer 20 includes an instruction member 21, a pointer cap 22, a light guide member 23, and a light shielding member 27, and is rotated by a stepping motor 30 via a rotation axis S. The light shielding member 27 of the pointer 20 is made of an opaque resin and is integrally formed with the light guide member 23. The light shielding member 27 of the pointer 20 has a flange portion 27a, and the locking claw 22a of the pointer cap 22 is locked to the flange portion 27a.
ステッピングモータ30は、回動軸Sを軸支する軸受部31を有している。ステッピングモータ30は、回路基板40の後面に搭載されている。回路基板40は、平板状のガラスエポキシ系基材に配線パターンを形成した硬質プリント基板からなる。ステッピングモータ30の軸受部31は、回路基板40に形成された開口部41に挿通されている。
The stepping motor 30 has a bearing portion 31 that supports the rotation shaft S. The stepping motor 30 is mounted on the rear surface of the circuit board 40. The circuit board 40 is composed of a hard printed board in which a wiring pattern is formed on a flat glass epoxy base material. The bearing 31 of the stepping motor 30 is inserted through an opening 41 formed in the circuit board 40.
回路基板40の前面には、発光ダイオード80a,80cが搭載されている。発光ダイオード80aは、トップビュー型のLED(Light Emitting Diode)からなるものであり、白色の照明光を発する。発光ダイオード80cは、トップビュー型のLED(Light Emitting Diode)からなるものであり、白色の照明光を発して、表示板10の指標部を透過照明する。
Light emitting diodes 80a and 80c are mounted on the front surface of the circuit board 40. The light emitting diode 80a is a top-view type LED (Light Emitting Diode), and emits white illumination light. The light emitting diode 80c is a top-view type LED (Light-Emitting-Diode), emits white illumination light, and illuminates and transmits the indicator portion of the display panel 10.
導光体50は、アクリル(PMMA)等の透光性樹脂からなるものであり、ステッピングモータ30の軸受部31を覆うような形状になっている。導光体50は、発光ダイオード80aが発した照明光を、指針20のボス部23に導くものである。導光体50は、受光部51及び支持部52を有している。導光体50の支持部52は、下方に突出する突出部52aを有しており、この突出部52aが回路基板40に挿入されることによって、導光体50が回路基板40に位置決めされている。導光体50は、ステッピングモータ30の回動軸Sが貫通する貫通孔55を有している。
The light guide 50 is made of a translucent resin such as acrylic (PMMA) and has a shape that covers the bearing 31 of the stepping motor 30. The light guide 50 guides the illumination light emitted from the light emitting diode 80 a to the boss portion 23 of the pointer 20. The light guide 50 includes a light receiving part 51 and a support part 52. The support portion 52 of the light guide 50 has a protrusion 52 a that protrudes downward, and the light guide 50 is positioned on the circuit board 40 by inserting the protrusion 52 a into the circuit board 40. Yes. The light guide 50 has a through hole 55 through which the rotation shaft S of the stepping motor 30 passes.
導光体50の受光部51は、入光面51a,外側反射面51b,内側反射面51cを有している。導光体50の上端面はドーナツ形状の出光面50dになっている。導光体50の出光面50dは、平面になっており、導光部材23の受光面23gに対向している。導光体50の出光面50dと指針20の受光面23gは平行になっている。導光体50の入光面51aから入射した照明光は、外側反射面51b,内側反射面51cによって反射され、出光面50dから導光部材23の受光面23gに照射される。
The light receiving portion 51 of the light guide 50 has a light incident surface 51a, an outer reflective surface 51b, and an inner reflective surface 51c. The upper end surface of the light guide 50 is a donut-shaped light exit surface 50d. The light exit surface 50 d of the light guide 50 is flat and faces the light receiving surface 23 g of the light guide member 23. The light exit surface 50d of the light guide 50 and the light receiving surface 23g of the pointer 20 are parallel to each other. The illumination light incident from the light incident surface 51a of the light guide 50 is reflected by the outer reflective surface 51b and the inner reflective surface 51c, and is irradiated from the light exit surface 50d to the light receiving surface 23g of the light guide member 23.
導光体50には、筒状遮光部90が一体成型されている。筒状遮光部90は、回動軸Sと同じ中心軸を有する円筒形状になっている。ケース体60は、白色の樹脂からなるものであり、遮光部61,反射部62,63を有している。ケース体60の遮光部61は、発光ダイオード80aが発した照明光が表示板10の指標部に照射されることを防止すると共に、発光ダイオード80cが発した照明光が指針20に入射することを防止する遮光壁である。ケース体60の反射部62は、発光ダイオード80cが発した照明光を反射部63に反射させる。ケース体60の反射部63は、反射部62で反射された照明光を更に反射させて、表示板10の指標部に照射する。
A cylindrical light shielding portion 90 is integrally formed with the light guide 50. The cylindrical light shielding portion 90 has a cylindrical shape having the same central axis as the rotation axis S. The case body 60 is made of a white resin and includes a light shielding portion 61 and reflection portions 62 and 63. The light shielding portion 61 of the case body 60 prevents the illumination light emitted from the light emitting diode 80a from being applied to the indicator portion of the display panel 10, and prevents the illumination light emitted from the light emitting diode 80c from entering the pointer 20. It is a shading wall to prevent. The reflection part 62 of the case body 60 reflects the illumination light emitted from the light emitting diode 80 c to the reflection part 63. The reflection part 63 of the case body 60 further reflects the illumination light reflected by the reflection part 62 and irradiates the indicator part of the display panel 10.
次に、図4に基づいて、指針20について更に詳述する。指針20の指示部材21は、指示本体21aと、この指示本体21aの下面に形成された白色層21bと、この白色層21bの下面の一部に形成された遮光層21cとを有している。
Next, the pointer 20 will be described in more detail based on FIG. The indicating member 21 of the pointer 20 includes an indicating body 21a, a white layer 21b formed on the lower surface of the indicating body 21a, and a light shielding layer 21c formed on a part of the lower surface of the white layer 21b. .
指示部材21の指示本体21aは、導光部材23からの照明光が入射する受光面21dを有している。指針20の指示部材21は、回動軸Sと共に回動して、表示板10の指標部を指示する。指針キャップ22は、不透明な樹脂からなるものであり、係止爪22aによって遮光部材27に係止されている。
The indicator main body 21a of the indicator member 21 has a light receiving surface 21d on which illumination light from the light guide member 23 is incident. The indication member 21 of the pointer 20 rotates together with the rotation axis S to indicate the indicator portion of the display board 10. The pointer cap 22 is made of an opaque resin and is locked to the light shielding member 27 by a locking claw 22a.
指針20の導光部材23は、ポリカーボネート(PC)等の透光性樹脂からなるものであり、ボス部23a及び反射部23bを有している。導光部材23のボス部23aは略円筒形状になっており、ボス部23aの外周面23hは円筒面になっている。導光部材23のボス部23aには孔部23kが形成されており、この孔部23kにステッピングモータ30の回動軸Sが圧入されている。ボス部23aの下端面は、導光体50からの照明光を受光する受光面23gになっている。ボス部23aの受光面23gは、ドーナツ形状の平面になっている。
The light guide member 23 of the pointer 20 is made of a translucent resin such as polycarbonate (PC) and has a boss portion 23a and a reflection portion 23b. The boss portion 23a of the light guide member 23 has a substantially cylindrical shape, and the outer peripheral surface 23h of the boss portion 23a has a cylindrical surface. A hole 23k is formed in the boss portion 23a of the light guide member 23, and the rotation shaft S of the stepping motor 30 is press-fitted into the hole 23k. The lower end surface of the boss portion 23 a is a light receiving surface 23 g that receives illumination light from the light guide 50. The light receiving surface 23g of the boss portion 23a is a donut-shaped plane.
指針20の反射部23bは、反射面23c,23d,23eを有しており、指針キャップ22に覆われている。ボス部23aの受光面23gから入射した照明光Lは、順次、反射面23c,反射面23d,反射面23eによって反射され、指示部材21の受光面21dに照射される。つまり、ボス部23aから入射した照明光Lは、反射面23cによって指示部材21の後端方向に向けて反射され、反射面23dによって上向きに反射され、反射面23eによって指示部材21の受光面21dに向けて反射される。
The reflecting portion 23b of the pointer 20 has reflecting surfaces 23c, 23d, and 23e and is covered with the pointer cap 22. The illumination light L incident from the light receiving surface 23g of the boss portion 23a is sequentially reflected by the reflecting surface 23c, the reflecting surface 23d, and the reflecting surface 23e, and is irradiated onto the light receiving surface 21d of the pointing member 21. That is, the illumination light L incident from the boss portion 23a is reflected toward the rear end direction of the indicating member 21 by the reflecting surface 23c, reflected upward by the reflecting surface 23d, and received by the reflecting surface 23e. Reflected towards.
受光面21dから指示本体21aに入射した照明光Lは、白色層21bによって反射され、指示本体21aが光輝する。反射面23cによって反射されずに、反射面23cから出射した照明光の一部L1は、遮光層21cによって遮られ、他の一部L2は、白色層21bを透過し、指示部材21の光輝に寄与する。
The illumination light L incident on the pointing body 21a from the light receiving surface 21d is reflected by the white layer 21b, and the pointing body 21a shines. A part L1 of the illumination light emitted from the reflection surface 23c without being reflected by the reflection surface 23c is blocked by the light shielding layer 21c, and the other part L2 is transmitted through the white layer 21b and becomes bright of the indication member 21. Contribute.
本実施形態によれば、白色層21bの下面の一部に形成された遮光層21cによって、反射面23cで反射されずに出射した照明光の一部L1が遮られるため、指示部材21の輝度ムラを少なくすることができる。なお、本発明は、本実施形態に限定されるものではなく、種々の変形が可能であり、例えば、回動軸Sが圧入されるボス部を遮光部材27に設けても良い。
According to the present embodiment, the light shielding layer 21c formed on a part of the lower surface of the white layer 21b blocks a part L1 of the illumination light emitted without being reflected by the reflecting surface 23c. Unevenness can be reduced. The present invention is not limited to this embodiment, and various modifications are possible. For example, a boss portion into which the rotation shaft S is press-fitted may be provided in the light shielding member 27.
本発明は、車両用計器装置に適用することができる。
The present invention can be applied to a vehicle instrument device.
20 指針(発光型指針)
21 指示部材
21a 指示本体
21b 白色層(半透過反射層)
21d 受光面
23 導光部材
23a ボス部(受光部)
23c 反射面(第一の反射面)
23d 反射面(第二の反射面)
23e 反射面(第二の反射面)
30 ステッピングモータ(指針駆動部)
50 導光体
50d 出光面
51a 入光面
55 貫通孔
80a 発光ダイオード(発光素子)
S 回動軸 20 pointer (light emitting pointer)
21 indicatingmember 21a indicating body 21b white layer (transflective layer)
21d Light-receivingsurface 23 Light guide member 23a Boss part (light-receiving part)
23c Reflective surface (first reflective surface)
23d Reflective surface (second reflective surface)
23e Reflective surface (second reflective surface)
30 Stepping motor (pointer drive unit)
50Light guide 50d Light exit surface 51a Light entrance surface 55 Through hole 80a Light emitting diode (light emitting element)
S rotation axis
21 指示部材
21a 指示本体
21b 白色層(半透過反射層)
21d 受光面
23 導光部材
23a ボス部(受光部)
23c 反射面(第一の反射面)
23d 反射面(第二の反射面)
23e 反射面(第二の反射面)
30 ステッピングモータ(指針駆動部)
50 導光体
50d 出光面
51a 入光面
55 貫通孔
80a 発光ダイオード(発光素子)
S 回動軸 20 pointer (light emitting pointer)
21 indicating
21d Light-receiving
23c Reflective surface (first reflective surface)
23d Reflective surface (second reflective surface)
23e Reflective surface (second reflective surface)
30 Stepping motor (pointer drive unit)
50
S rotation axis
Claims (2)
- 照明光を受光する受光部を有する導光部材と、前記導光部材からの前記照明光を受光する受光面を有し前記照明光によって光輝する指示部材と、を備え、指針駆動部によって回動される発光型指針であって、
前記導光部材は、前記受光部にて受光した前記照明光を前記指示部材の後端方向に反射させる第一の反射面と、前記第一の反射面で反射された前記照明光を前記指示部材の前記受光面に導く第二の反射面と、を有し、
前記指示部材は、透光性材料からなる指示本体と、前記指示本体の下面に形成され前記受光面から入射した前記照明光を反射させる半透過反射層と、前記半透過反射層の下面の一部に形成され前記第一の反射面で反射されずに出射した前記照明光の一部を遮る遮光層と、を有することを特徴とする発光型指針。 A light guide member having a light receiving portion that receives illumination light; and a pointing member that has a light receiving surface that receives the illumination light from the light guide member and shines by the illumination light, and is rotated by a pointer driving portion. A luminous pointer to be used,
The light guide member reflects the illumination light received by the light receiving unit in a direction toward the rear end of the indicating member, and the indication of the illumination light reflected by the first reflecting surface. A second reflective surface leading to the light receiving surface of the member,
The indicating member includes an indicating body made of a translucent material, a transflective layer that is formed on a lower surface of the indicating body and reflects the illumination light incident from the light receiving surface, and a lower surface of the transflective layer. And a light-shielding layer that blocks a part of the illumination light emitted without being reflected by the first reflecting surface. - 発光型指針と、前記発光型指針を光輝させるための照明光を発する発光素子と、前記照明光を前記発光型指針に導く導光体と、回動軸を介して前記発光型指針を回動させる指針駆動部と、を備えた指針式計器装置であって、
前記発光型指針は、前記導光体から前記照明光を受光する受光部を有する導光部材と、前記導光部材からの前記照明光を受光する受光面を有し前記照明光によって光輝する指示部材と、を有し、
前記導光部材は、前記受光部にて受光した前記照明光を前記指示部材の後端方向に反射させる第一の反射面と、前記第一の反射面で反射された前記照明光を前記指示部材の前記受光面に導く第二の反射面と、を有し、
前記指示部材は、透光性材料からなる指示本体と、前記指示本体の下面に形成され前記受光面から入射した前記照明光を反射させる半透過反射層と、前記半透過反射層の下面の一部に形成され前記第一の反射面で反射されずに出射した前記照明光の一部を遮る遮光層と、を有することを特徴とする指針式計器装置。 A light emitting type pointer, a light emitting element that emits illumination light for illuminating the light emitting type pointer, a light guide that guides the illumination light to the light emitting type pointer, and rotating the light emitting type pointer via a rotating shaft A pointer-type instrument device comprising:
The light emitting type indicator has a light guide member having a light receiving portion that receives the illumination light from the light guide, and a light receiving surface that receives the illumination light from the light guide member, and an instruction to shine by the illumination light A member, and
The light guide member reflects the illumination light received by the light receiving unit in a direction toward the rear end of the indicating member, and the indication of the illumination light reflected by the first reflecting surface. A second reflective surface leading to the light receiving surface of the member,
The indicating member includes an indicating body made of a translucent material, a transflective layer that is formed on a lower surface of the indicating body and reflects the illumination light incident from the light receiving surface, and a lower surface of the transflective layer. And a light shielding layer that blocks a part of the illumination light emitted without being reflected by the first reflecting surface.
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH0541373Y2 (en) * | 1988-03-10 | 1993-10-20 | ||
JPH10142011A (en) * | 1996-11-06 | 1998-05-29 | Nippon Seiki Co Ltd | Device for illuminating pointer |
JP2001027553A (en) * | 1999-07-14 | 2001-01-30 | Denso Corp | Luminous pointer for measuring instrument |
JP2014009958A (en) * | 2012-06-27 | 2014-01-20 | Nippon Seiki Co Ltd | Pointer type instrument device |
-
2015
- 2015-03-23 JP JP2015059068A patent/JP6459683B2/en active Active
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2016
- 2016-03-09 WO PCT/JP2016/057343 patent/WO2016152521A1/en active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH0541373Y2 (en) * | 1988-03-10 | 1993-10-20 | ||
JPH10142011A (en) * | 1996-11-06 | 1998-05-29 | Nippon Seiki Co Ltd | Device for illuminating pointer |
JP2001027553A (en) * | 1999-07-14 | 2001-01-30 | Denso Corp | Luminous pointer for measuring instrument |
JP2014009958A (en) * | 2012-06-27 | 2014-01-20 | Nippon Seiki Co Ltd | Pointer type instrument device |
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