WO2015198861A1 - Dispositif compteur - Google Patents

Dispositif compteur Download PDF

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Publication number
WO2015198861A1
WO2015198861A1 PCT/JP2015/066704 JP2015066704W WO2015198861A1 WO 2015198861 A1 WO2015198861 A1 WO 2015198861A1 JP 2015066704 W JP2015066704 W JP 2015066704W WO 2015198861 A1 WO2015198861 A1 WO 2015198861A1
Authority
WO
WIPO (PCT)
Prior art keywords
display
instrument device
translucent
light
case
Prior art date
Application number
PCT/JP2015/066704
Other languages
English (en)
Japanese (ja)
Inventor
青野　賢司
柳瀬　拡
Original Assignee
日本精機株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 日本精機株式会社 filed Critical 日本精機株式会社
Publication of WO2015198861A1 publication Critical patent/WO2015198861A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT 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
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • 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
    • G01D11/24—Housings ; Casings for instruments
    • G01D11/26—Windows; Cover glasses; Sealings therefor

Definitions

  • the present invention relates to an instrument device, and more particularly, to an apparatus provided with an antireflection portion having fine conical protrusions.
  • Patent Document 1 There is a device disclosed in Patent Document 1 as a device provided with fine conical projections in order to prevent external light reflection.
  • the device described in Patent Document 1 is provided with a plurality of cone-shaped convex portions (so-called moth-eye structure) provided on the surface of a touch panel located on a display panel and arranged at a pitch equal to or less than the wavelength of visible light. Thus, an attempt is made to reduce external light reflection.
  • an instrument device mounted on a motorcycle or the like and exposed outdoors tends to cloud the inside of the translucent plate that is visible through the display of the instrument device.
  • an antifogging agent is applied to the inner surface of the translucent plate.
  • an antifogging agent is used in this case, there is a dilemma that the antifogging agent is buried in fine irregularities and the antireflection effect is not exhibited.
  • the present invention has been made in view of the above circumstances, and an object of the present invention is to provide an instrument device that has both antireflection performance and antifogging performance and good visibility.
  • the instrument device includes: An instrument device mounted on a vehicle, A display unit for displaying a predetermined measurement amount related to the vehicle; A translucent part that is located on the front side of the display part and visually recognizes the display part; On the display part side of the translucent part, an antireflection part having a plurality of conical protrusions arranged with a pitch less than the wavelength of visible light and formed of a hydrophilic resin is provided. It is characterized by that.
  • an instrument device that has both antireflection performance and antifogging performance and good visibility.
  • FIG. 1 It is a figure which shows the instrument apparatus which concerns on 1st Embodiment of this invention
  • (a) is a top view
  • (b) is an AA line schematic sectional drawing shown to Fig.1 (a).
  • the instrument device 100 is mounted on a vehicle such as a motorcycle and notifies a user (mainly a driver) of a measurement amount related to the vehicle such as a vehicle speed, an engine speed, and a remaining fuel.
  • the instrument device 100 is disposed, for example, in the vicinity of a handle of a motorcycle and has an outer shape shown in FIG.
  • each part of the instrument device 100 is defined with the upper side in FIG. 1B representing the instrument device 100 in cross section as the “front side” and the lower side as the “back side”. Will be described as appropriate.
  • the instrument device 100 includes a display unit 10, a circuit board 20, a translucent plate 30, a first case 40, a second case 50, and antireflection. Unit 60.
  • the translucent plate 30 and the antireflection unit 60 constitute a translucent unit 90 that is located on the front side of the display unit 10 and allows the display unit 10 to be seen through.
  • the display unit 10 displays a measurement amount such as the vehicle speed described above, and includes a display 11 and a design plate 12.
  • the display 11 is composed of, for example, a liquid crystal display (LCD) and displays a measurement amount such as a vehicle speed under the control of a control unit (not shown) described later.
  • the display 11 includes a liquid crystal panel, a backlight that illuminates the panel from the back, a drive circuit that supplies an electric signal to the liquid crystal panel, and the like.
  • the display 11 may be an organic EL (Electro-Luminescence) display.
  • the display of the measurement amount on the display 11 includes not only a mode in which the measurement value is specifically displayed with numbers and characters but also a mode in which the user reads the measurement amount by displaying a bar graph or a pointer image. .
  • the design board 12 is formed by forming a printing layer on the front surface and / or the back surface of a translucent plate material such as polycarbonate.
  • the design plate 12 is located on the front side of the display 11 and allows the display surface of the display 11 to be viewed from the formed opening 12a, while being a light-shielding print portion formed over substantially the entire area of the plate material. Cover other parts of the screen.
  • a light-transmitting portion is provided in a predetermined portion of the light-shielding printed portion of the design plate 12, for example, in a cutout shape (a letter character shape), and this light-transmitting portion allows the state of the direction indicator, the lighting state of the light, etc.
  • a warning display may be realized by forming symbols (including characters, figures, and icons) representing various warnings.
  • the light-transmitting portion is illuminated from behind by a light source (for example, an LED (Light Emitting Diode)) mounted on the circuit board 20, so that the warning display is turned on.
  • the circuit board 20 includes a printed circuit board on which a control unit (not shown) and a light source for lighting a warning display are mounted.
  • the circuit board 20 is located on the back side of the display 11.
  • the control unit includes a microcomputer or the like, and acquires data indicating various measurement amounts from various sensors such as an ECU (Electronic Control Unit) and a vehicle speed sensor. Based on the data thus obtained, the control unit causes the display 11 to display a measurement amount such as a vehicle speed. Further, for example, the control unit causes the warning light source to emit light according to signals indicating various warnings acquired from the ECU or the like.
  • the translucent plate 30 constitutes the translucent unit 90 that allows the display unit 10 to be seen through.
  • the translucent unit 90 includes an antireflection unit 60 and a double-sided adhesive tape 70, which will be described later, provided on the back surface of the translucent plate 30.
  • the translucent plate 30 is made of a translucent resin such as PMMA (polymethyl methacrylate resin) and is located on the front side of the display unit 10.
  • the translucent plate 30 is formed in a lens shape that is convex toward the front side. Thereby, it is suppressed that external light reflects toward a driver
  • the first case 40 is made of a light-shielding resin or the like, and holds the outer edge of the translucent plate 30 (the translucent portion 90) with an opening 41 formed on the front side.
  • the first case 40 is formed integrally with the translucent plate 30 by insert molding or the like, thereby preventing water and the like from entering from the front side of the instrument device 100.
  • the second case 50 is made of a light shielding resin or the like, and is formed in a box shape opened on the front side.
  • the second case 50 is fitted to the first case 40 at the outer periphery of each other and integrally forms a substantially sealed space inside.
  • the display unit 10 and the circuit board 20 are accommodated in the substantially sealed space.
  • the first case 40 and the second case 50 are coupled through, for example, a sealing material (not shown), and the coupled portion is waterproofed.
  • an insertion hole through which a wire harness connecting the circuit board 20 and the outside of the instrument device 100 passes is provided on the back surface of the second case 50. This insertion hole is also waterproofed by the sealing material.
  • a plurality of vent holes are provided on the back surface of the second case 50. These vent holes are closed with a porous film and are waterproofed while allowing the inside and outside of the instrument device 100 to be vented.
  • the internal units such as the display unit 10 and the circuit board 20 may be fixed to either the first case 40 or the second case 50.
  • the internal unit may have a structure that is sandwiched between both cases.
  • As the fixing / arrangement structure for the case of the internal unit an appropriate one may be adopted in consideration of ease of assembly and vibration resistance.
  • the first case 40 and / or the second case 50 may be configured by combining a plurality of members.
  • the first case 40 and the second case 50 configured as described above prevent water from entering the instrument device 100.
  • the space formed in both cases by the above-mentioned ventilation holes is a substantially sealed space in which a certain degree of ventilation is maintained. Due to such a structure, ventilation between the inside and outside of the instrument device 100 is performed. Since it becomes limited, the inner side of the translucent plate 30 is likely to be cloudy as compared with a display device for indoor use.
  • the instrument device 100 according to the present embodiment ensures anti-fogging performance along with anti-reflection performance of external light by the anti-reflection unit 60 described below.
  • the antireflection part 60 is provided on the back side of the translucent part 90. As shown in FIG. 2, the antireflection portion 60 is a film (sheet) configured by coating a film-like base material 61 with a concavo-convex layer 62 having a moth-eye structure.
  • the base material 61 is made of a resin such as triacetyl cellulose (TAC), polyethylene terephthalate (PET), polycarbonate (PC).
  • TAC triacetyl cellulose
  • PET polyethylene terephthalate
  • PC polycarbonate
  • As the substrate 61 for example, a material having a thickness of about 5 to 300 ⁇ m and excellent in optical characteristics is selected.
  • the concavo-convex layer 62 is formed with a moth-eye structure, and a plurality of conical projections 62a are arranged two-dimensionally (along the back surface of the substrate 61) with a pitch P equal to or less than the wavelength of visible light. It consists of
  • the arrangement pitch P of the conical protrusions 62a is not particularly limited as long as it is equal to or smaller than the wavelength of visible light. However, since it affects the wavelength dependency of the reflectance, the arrangement pitch P should be an appropriate value according to the purpose. Is formed.
  • the arrangement pitch P is set to about 100 nm, for example.
  • the arrangement pitch P can be appropriately changed within a range of several tens of nm to several hundreds of nm.
  • the height H of the conical protrusion 62a also affects the wavelength dependency of the reflectance, it is formed to have an appropriate value according to the purpose. For example, the height H is about several hundred nm.
  • the “conical shape” in the conical protrusion 62 a does not mean only a complete cone or a pyramid, but may be generally a cone shape or a tapered shape (cross-sectional wedge shape). Further, the tip of the conical protrusion 62a may be curved as shown in FIG. 2 or may not be sharp. Moreover, the front-end
  • the conical protrusions 62a need to be tapered in order to realize a moth-eye structure, but may be changed as appropriate according to manufacturing restrictions and purposes.
  • the antireflection part 60 forms a layer made of a resin having photocurability (UV (Ultraviolet), EB (ElectronElectroBeam) curability, etc.)) and hydrophilicity on the substrate 61, and then transfers the moth-eye shape with a stamper.
  • the uneven layer 62 is formed by curing the resin layer by light irradiation.
  • the concavo-convex layer 62 is composed of a material in which a hydrophilic polymer (protein, polyesteramide, etc.) is contained in a UV curable resin, a material using a photocatalyst (titanium oxide) that exhibits hydrophilicity during UV irradiation, or the like. .
  • corrugated layer 62 which consists of hydrophilic resin is formed.
  • a moth-eye shape (wavelength of visible light) is formed on a base material 61 made of a resin (thermoplastic and hydrophilic resin) obtained by imparting hydrophilicity to a thermoplastic resin such as polyethylene or polypropylene by heat cycle molding.
  • the antireflection part 60 may be manufactured by transferring a shape having a plurality of conical protrusions arranged at the following pitch.
  • the antireflection part 60 is closely fixed to the back surface of the translucent plate 30 with a double-sided adhesive tape 70 having high transparency.
  • the antireflection part 60 may be melted and fixed to the light transmitting plate 30 when the light transmitting plate 30 is injection-molded.
  • the moth-eye structure is formed directly on the back surface of the translucent plate 30 made of a hydrophilic resin, not by a method of fixing and fixing the antireflection portion 60 made of a film on the back surface of the translucent plate 30.
  • the translucent part 90 provided with the antireflection part 60 may be realized.
  • the antireflection part 60 is formed directly on the translucent plate 30 without using the base material 61 or the double-sided adhesive tape 70.
  • the instrument device 100 having the above configuration is provided with an antireflection portion 60 using a moth-eye structure on the back side of the light transmitting portion 90.
  • the refractive index for light incident from the outside of the instrument device 100 and transmitted from the light transmitting part 90 to the air layer between the light transmitting part 90 and the display part 10 is applied from the light transmitting part 90 to the air layer. It can be continuously changed (a discontinuous interface in the refractive index can be avoided). For this reason, it is suppressed that incident light is interface-reflected by the back surface of the translucent part 90, the reflection of an external scene, sunlight, and illumination decreases, and the visibility of the display part 10 improves.
  • the transmittance of light emitted from the display unit 10 (light representing the display image of the display 11 and light from the lit warning display) is increased. It is not necessary to increase the luminance of the backlight of the display 11 or the light source for warning more than necessary, and the power consumption of the instrument device 100 can be suppressed. Moreover, generation
  • produced by repeating reflection of light between the display part 10 and the translucent part 90 can also be suppressed.
  • the uneven layer 62 has a back surface of the translucent part 90 that is formed by agglomeration of moisture existing in the instrument device 100 due to a synergistic effect of the wettability due to the hydrophilic resin and the moth-eye structure. Even if it is formed, it is not a fine water droplet with a particle size (several ⁇ m to several tens ⁇ m) that diffusely reflects light, and it is possible to prevent the contact angle from being held in an obtuse state. It can prevent being visually recognized as white. That is, since the uneven layer 62 realizes a superhydrophilic state with an extremely small apparent contact angle, water formed by aggregation is not formed as fine water droplets that cause Mie reflection. The fogging occurring inside 90 is prevented. As a result, it is possible to obtain a dustproof effect to the extent that application of an antifogging agent becomes unnecessary.
  • the instrument device 100 has both good anti-reflection performance and anti-fogging performance and good visibility.
  • the above moth-eye structure can be applied to various instruments.
  • a second embodiment in which a moth-eye structure is applied to an analog instrument will be described with reference to FIGS. 3 and 4.
  • each part having the same function as that described in the first embodiment is denoted by the same reference numeral as in the first embodiment, and is different. The explanation will be focused on.
  • the instrument device 200 As shown in FIGS. 3 and 4, the instrument device 200 according to the second embodiment is decorated in addition to the display unit 210 that displays the measurement amount using the pointer 211, the translucent plate 30, and the antireflection unit 60. A translucent part 290 having a part 80.
  • the instrument device 200 can be applied to various devices such as a speedometer and a tachometer. In the following description, the instrument device 200 is assumed to be a speedometer in order to facilitate understanding of the description.
  • the display unit 210 includes a pointer 211 and a dial plate 212. On the dial 212, an indicator portion (made of scales, numbers, etc.) to be indicated by the pointer 211 is formed.
  • the indicator portion is formed by a light-transmitting portion formed by cutting out the light-shielding print layer, for example, in the same manner as the design plate 12 described above.
  • the pointer 211 rotates on the dial 212 according to the vehicle speed.
  • the display unit 210 informs the user of the vehicle speed by causing the indicated part of the pointer 211 and the indicator part to be compared and read.
  • the pointer 211 is rotated by the power of a stepping motor mounted on a circuit board (not shown) (the same configuration as the circuit board 20 described above). This motor operates under the control of the control unit, and rotates the pointer 211 in accordance with the vehicle speed signal supplied from the vehicle speed sensor.
  • the light transmitting plate 30 is formed in a lens shape (curved surface shape) that is convex on the front surface side, and is configured so that the vicinity of the rotation center of the pointer 211 protrudes most.
  • a lens shape curved surface shape
  • the translucent plate 30 is formed in a lens shape, it is easy to ensure a gap with the pointer 211, so that there is an advantage that the instrument device 200 can be made thin.
  • the decoration part 80 is formed in a part between the translucent plate 30 and the antireflection part 60.
  • the decoration unit 80 is a printed layer formed by pad printing on the back surface of the translucent plate 30, a printed layer formed by screen printing on the front surface of the substrate 61, or a depression (engraved) on the back surface of the translucent plate 30. (In FIG. 4, the example in which the decorating unit 80 is configured by an air layer is shown).
  • the decoration unit 80 represents, for example, a frame or a concentric pattern when the instrument device 200 is viewed from the front side.
  • the design of the decoration part 80 can have various aspects, and is not limited.
  • the decoration part 80 When such a decoration part 80 is provided, the antireflection effect of the antireflection part 60 is eliminated in the formation part, and thus the reflected light in the formation part of the decoration part 80 is emphasized. Thereby, a strong contrast is provided between the light that is incident from the front side of the translucent part 290 and reflected at the part where the decorative part 80 is formed, and the light reflected at the other part, and the decorative part 80 is raised.
  • the decorating unit 80 can also express at least a part of the index unit that is the target of the pointer 211. In this case, the indicator part formed by the decoration part 80 is instructed by the pointer 211 that is visually recognized through the light transmitting part 290.
  • an anti-reflection effect by applying an anti-reflective (AR) coat on the front surface of the light-transmitting plate 30.
  • the AR coat is formed, for example, by a technique of vacuum-depositing magnesium fluoride or the like. It is also possible to provide a moth-eye structure not only on the back side of the translucent plate 30 but also on the front side. Further, the translucent plate 30 does not have to be a convex lens shape, and may be colored and transparent.
  • the decoration unit 80 may be provided in a digital instrument such as the instrument device 100.
  • the vehicle on which the instrument devices 100 and 200 are mounted is not limited to a motorcycle.
  • the present invention is particularly suitable for vehicles on which instrument devices are exposed to the outdoors, such as motorcycles, agricultural machines, ships, snowmobiles, and jet skis. This is because the influence of outside light is great, and airflow is restricted from the viewpoint of waterproofness, and the environmental temperature is greatly changed, so that it is easily cloudy.
  • the present invention relates to an instrument device, and can be applied to, for example, an instrument device mounted on a moving body including an automobile, a motorcycle, an agricultural machine, or a construction machine.

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

Abstract

　L'invention concerne un dispositif compteur qui combine une fonction anti-réflexion et une fonction anti-buée et qui présente une bonne visibilité. Le dispositif compteur (100) selon l'invention est installé dans un véhicule et est doté d'une unité d'affichage (10) destinée à afficher une quantité prédéterminée se rapportant au véhicule et d'une unité de transmission de lumière (90) positionnée sur le côté de surface avant de l'unité d'affichage (10), et à travers laquelle l'unité d'affichage (10) est visible. Une unité anti-réflexion (60) est disposée du côté de l'unité d'affichage (10) de l'unité de transmission de lumière (90). Ladite unité anti-réflexion (60) présente une pluralité de saillies coniques qui sont composées d'une résine hydrophile et agencées selon un pas inférieur ou égal aux longueurs d'onde de la lumière visible.
PCT/JP2015/066704 2014-06-25 2015-06-10 Dispositif compteur WO2015198861A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2014129982A JP6379726B2 (ja) 2014-06-25 2014-06-25 計器装置
JP2014-129982 2014-06-25

Publications (1)

Publication Number Publication Date
WO2015198861A1 true WO2015198861A1 (fr) 2015-12-30

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ID=54937953

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Application Number Title Priority Date Filing Date
PCT/JP2015/066704 WO2015198861A1 (fr) 2014-06-25 2015-06-10 Dispositif compteur

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JP (1) JP6379726B2 (fr)
WO (1) WO2015198861A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019128280A (ja) * 2018-01-25 2019-08-01 株式会社デンソー 車両用表示装置
CN111645869A (zh) * 2020-04-21 2020-09-11 江西冠一通用飞机有限公司 一种通用飞机用防雾化仪表盘
CN113377000A (zh) * 2020-02-25 2021-09-10 卡西欧计算机株式会社 显示装置以及钟表
CN114349359A (zh) * 2021-12-27 2022-04-15 盐城牧东光电科技有限公司 一种低反射高透光性盖板及其制作工艺

Families Citing this family (6)

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Publication number Priority date Publication date Assignee Title
JP6651939B2 (ja) * 2016-03-29 2020-02-19 日本精機株式会社 表示装置
US20200300675A1 (en) * 2016-04-25 2020-09-24 Nippon Seiki Co., Ltd. Gauge
JP6829812B2 (ja) * 2017-02-16 2021-02-17 日本精機株式会社 計器
JP2019188897A (ja) * 2018-04-20 2019-10-31 矢崎総業株式会社 車両表示器用カバーおよび車両表示装置
JP7029636B2 (ja) * 2018-04-24 2022-03-04 日本精機株式会社 表示装置
JP7164380B2 (ja) * 2018-09-27 2022-11-01 矢崎総業株式会社 表示装置

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JP2002013953A (ja) * 2000-06-28 2002-01-18 Nippon Seiki Co Ltd 表示装置
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JP2009271298A (ja) * 2008-05-07 2009-11-19 Mitsubishi Rayon Co Ltd 防曇性透明部材、およびこれを具備した物品
JP2015078924A (ja) * 2013-10-17 2015-04-23 デクセリアルズ株式会社 防曇用フィルム及びそれを用いた計器

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JP3550683B2 (ja) * 2001-04-27 2004-08-04 日本精機株式会社 ケースの通気構造
JP2008158293A (ja) * 2006-12-25 2008-07-10 Nissan Motor Co Ltd 親水性反射防止構造
DE102009052074B3 (de) * 2009-11-05 2011-05-12 Abb Technology Ag Feldgerät
JP5565185B2 (ja) * 2010-08-06 2014-08-06 日本精機株式会社 表示装置

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Publication number Priority date Publication date Assignee Title
JPH10267700A (ja) * 1997-03-28 1998-10-09 Nippon Seiki Co Ltd 計器用前面板とその製造方法
JP2002013953A (ja) * 2000-06-28 2002-01-18 Nippon Seiki Co Ltd 表示装置
JP2003222701A (ja) * 2002-01-29 2003-08-08 Seiko Epson Corp 光学部品及びその製造方法
JP2008275378A (ja) * 2007-04-26 2008-11-13 Nippon Seiki Co Ltd 二重成型品及び二重成型品の防曇剤被膜形成方法
JP2009271298A (ja) * 2008-05-07 2009-11-19 Mitsubishi Rayon Co Ltd 防曇性透明部材、およびこれを具備した物品
JP2015078924A (ja) * 2013-10-17 2015-04-23 デクセリアルズ株式会社 防曇用フィルム及びそれを用いた計器

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019128280A (ja) * 2018-01-25 2019-08-01 株式会社デンソー 車両用表示装置
CN113377000A (zh) * 2020-02-25 2021-09-10 卡西欧计算机株式会社 显示装置以及钟表
CN111645869A (zh) * 2020-04-21 2020-09-11 江西冠一通用飞机有限公司 一种通用飞机用防雾化仪表盘
CN111645869B (zh) * 2020-04-21 2023-07-18 江西冠一通用飞机有限公司 一种通用飞机用防雾化仪表盘
CN114349359A (zh) * 2021-12-27 2022-04-15 盐城牧东光电科技有限公司 一种低反射高透光性盖板及其制作工艺
CN114349359B (zh) * 2021-12-27 2023-06-09 盐城牧东光电科技有限公司 一种低反射高透光性盖板及其制作工艺

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JP6379726B2 (ja) 2018-08-29
JP2016008896A (ja) 2016-01-18

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