JP2004144547A - Measuring instrument having multicolor emission illuminator and its light source brightness control method - Google Patents

Measuring instrument having multicolor emission illuminator and its light source brightness control method Download PDF

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Publication number
JP2004144547A
JP2004144547A JP2002308120A JP2002308120A JP2004144547A JP 2004144547 A JP2004144547 A JP 2004144547A JP 2002308120 A JP2002308120 A JP 2002308120A JP 2002308120 A JP2002308120 A JP 2002308120A JP 2004144547 A JP2004144547 A JP 2004144547A
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JP
Japan
Prior art keywords
light
light source
color
instrument
lighting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2002308120A
Other languages
Japanese (ja)
Inventor
Yoshiaki Yamauchi
山内 義昭
Original Assignee
Oomori Meter Seisakusho:Kk
株式会社大森メーター製作所
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 Oomori Meter Seisakusho:Kk, 株式会社大森メーター製作所 filed Critical Oomori Meter Seisakusho:Kk
Priority to JP2002308120A priority Critical patent/JP2004144547A/en
Publication of JP2004144547A publication Critical patent/JP2004144547A/en
Pending legal-status Critical Current

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Abstract

An instrument with a multi-color light-emitting lighting device and a light source luminance control method capable of freely and easily changing the color and the luminance of the instrument according to environmental conditions and the sensitivity of a driver.
A light source having a plurality of light bulbs or light-emitting diodes of different colors is disposed in a concave portion of a light guide plate disposed on the back of a scale plate in an instrument. The color light source 3 is connected to a controller 4 outside the instrument 23 via the lead wire 5 and the connector 7 and the like. By manually operating an operation shaft 16 of the controller 4 corresponding to each color light source 3, 3 is capable of freely adjusting the output and obtaining illumination of a desired color on the instrument panel.
[Selection diagram] Fig. 1

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a lighting device for a measuring instrument such as a speedometer mounted on a general vehicle, a thermometer, a pressure gauge, a tachometer, and the like, and particularly to a lighting device for a multicolor light emitting device capable of freely emitting multicolor light. Related to instruments.
[0002]
[Prior art]
Instruments such as thermometers, pressure gauges, tachometers, etc. placed in places such as the vehicle's meter panel must be clearly visible throughout the day and night. There were various lighting structures. For example, Japanese Patent No. 3084710, Japanese Patent Application Laid-Open No. 8-233613, Japanese Patent Application Laid-Open No. 2000-18976, Japanese Patent Application Laid-Open No. 2000-234943, Japanese Patent Application Laid-Open No. 2001-74511, Japanese Patent Application Laid-Open No. 2001-41779, JP-A-2001-227992, JP-A-2002-71392, JP-A-2002-62165 and the like.
[0003]
In the invention described in Japanese Patent No. 3084710, a light guide plate for guiding light is arranged on a pointer of a scale plate, a light source including a plurality of light emitting diodes is arranged behind the light guide plate, and the display plate and the pointer have different colors. Or both are illuminated by light sources of similar colors.Each light source produces a single color light, and each light source flashes, and the display board or It illuminates the pointer.
[0004]
Japanese Patent Application Laid-Open No. 2000-18976 discloses an "illumination structure of an instrument" in which a light-emitting diode is arranged on a light guide plate arranged below a dial to illuminate the dial, and the overall thickness is made as flat as possible. The light emitting diode is characterized by its structure, and the light emitting diode is also of a single color. Japanese Patent Application Laid-Open No. 2002-62165 discloses an “instrument device” that includes an LED, a control circuit thereof, and the like on a flexible circuit board (FPC) disposed below a reflector that holds an instrument panel including a display panel and a light guide plate. Is flexibly arranged, and a connector from a power supply is detachably connected to a concave portion provided in the holding portion on which the FPC is mounted. However, the LED is made of a single color, and the LED is mounted on the FPC as described above. It is just an array.
[0005]
Japanese Patent Application Laid-Open No. 2000-23494 discloses a "vehicle pointer instrument" having a semiconductor element and a lamp as a light source, which are also made of a single color, and their arrangement is not specially devised. . Japanese Patent Application Laid-Open No. H8-23363 discloses an "illumination device" which includes a first light source and a second light source having a different emission color as light sources, and these light sources are arranged at different positions. , Consisting of individually controlled structures. Japanese Patent Application Laid-Open No. 2001-74511 also has a "pointer meter" having two light sources, but is arranged at different places, and the arrangement structure is not specially devised. The "instrument" of JP-A-2001-41779 merely uses one illumination lamp as a light source, and includes two light sources of JP-A-2001-227992, but is of a single color. Further, the "instrument" in JP-A-2002-71392 is merely an arrangement in which a monochromatic light source is disposed on a base plate of a pointer shaft.
[0006]
[Problems to be solved by the invention]
As described above, there are various types of instrument lighting structures, but as described above, the light source is almost monochromatic, and even if the light source is multicolored, each light source is arranged in another place. Not just. On the other hand, it is desired that the instrument be capable of changing to a multicolor rather than a single color in view of the peripheral brightness, the brightness in the vehicle, the driver's visual sensitivity at that time, and the like. It is also desirable that the security is high and that the illumination of the instrument can be changed in multiple colors. It is also desirable that the adjustment of this change be made freely and easily by the front and back of the driver.
[0007]
The present invention has been made in view of the above circumstances, and a lighting device such as an instrument can be changed to a multicolor, and adjustment control for the change can be easily performed. It is an object of the present invention to provide a multicolor light-emitting lighting device and a light source luminance control method thereof.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a meter with a multicolor illuminating device according to claim 1, wherein a display unit is provided on the front surface, and a scale plate on which a pointer for indicating a scale is arranged; A light guide plate disposed on the back side of the instrument, and a light source for an instrument including a light source for illuminating the scale plate through the light guide plate, wherein the light source of the lighting device emits light of a different color or It consists of a color light source having a plurality of light emitting diodes, and these color light sources can freely adjust the brightness of the color light source of each light bulb or light emitting diode by the operation of an operation shaft provided on a controller arranged outside the lighting device. By adjusting the luminance of the color light sources, the illumination color of the scale plate can be varied. The above object can be achieved by a configuration in which an operation axis for manually adjusting the luminance of each color light source is provided in the controller.
[0009]
Further, the object of the present invention is to provide a scale plate in which a display unit is provided on the front surface and a pointer for indicating a scale is arranged, a light guide plate disposed on the back side of the scale plate, and the light guide plate. A light source luminance control method for controlling the luminance of the light source in a lighting device for an instrument, comprising: a light source for illuminating the scale plate; and control means arranged to adjust the luminance of the light source. A plurality of color light sources, such as light bulbs or light-emitting diodes, that emit light of different colors are arranged as light sources for illuminating the plate, and the brightness of the color light sources is selectively operated by manually operating the operation axes of the respective color light sources provided in the control means. Thus, the present invention can be achieved by a light source luminance control method for an instrument with a multicolor illuminating device that freely adjusts the luminance of the color of the color light source.
[0010]
The object of the present invention is to use a light source that includes at least three color light sources that emit blue, green, and red light and is provided in a single sphere as one light source disposed on the back side of the scale plate. Can be achieved by:
[0011]
The instrument with the multicolor light-emitting lighting device of the present invention controls the luminance of the color light source of a light bulb or a light-emitting diode, instead of turning on a single color light as a light source for illuminating the scale plate of the instrument panel, Since a light source that generates a plurality of types of color light is used by the combination, the brightness of each color light source of the controller operates the operation axis, and the combination makes it possible to enjoy an instrument with the desired color light each time.
[0012]
Further, since the present invention has the above configuration, the illumination of the scale plate can be changed to multicolor by operating the operation axis of each color light source of the controller, and the brightness can be freely adjusted. As a result, the brightness can be adjusted according to the environmental conditions and the driver's visual sensitivity, and safety can be improved. In addition, since the color light sources of light bulbs or light emitting diodes of different colors have an integral structure, the device structure can be compactly assembled.
In particular, it can be formed by removing the illumination light bulb on the wiring board of a conventional automobile instrument and mounting a light source having a built-in color light source instead.
[0013]
Also, the light source luminance control method of the instrument with a multicolor light-emitting illumination device of the present invention includes a scale plate provided with a display unit on an upper surface, a light guide plate provided on the back side of the scale plate, and the light guide plate. A light source that illuminates the scale plate, and a light source luminance control method for controlling the luminance of the light source in a lighting device including a controller disposed outside the device to adjust the luminance of the light source, The control method is characterized in that the operation axis provided in the controller is selectively operated manually to freely adjust the brightness of each color. By the manual adjustment of the operation axis, the brightness and color of the scale plate of the lighting device can be easily adjusted to the desired brightness by the driver's will.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of a meter with a multicolor light-emitting lighting device and a method of controlling a light source luminance thereof according to the present invention will be described in detail with reference to the drawings.
FIG. 1 is a perspective view showing an embodiment of a single light source having a built-in color light source for generating color light of the present invention and a controller connected thereto, and FIG. 2 is a view showing an integrated light source and its holding structure. FIG. 3 is a perspective view showing an outline of the embodiment, FIG. 3 is a partial cross-sectional view showing an embodiment of a lighting unit in which a light source in FIG. 2 is arranged, FIG. 4 is a block diagram showing a control circuit of an embodiment in a controller, and FIG. FIG. 6 is a cross-sectional view showing the internal structure of another embodiment of the instrument with the multicolor light emitting lighting device of the present invention, FIG. 6 is a plan view showing one example of the instrument with the multicolor light emitting lighting device of the present invention, and FIG. It is a rear view.
[0015]
The overall structure of the instrument 23 to which the instrument with the multicolor light-emitting lighting device of the present invention is applied will be briefly described based on the embodiment shown in FIG.
A scale plate 24 as a display unit is provided on the front surface, and a light guide plate 25 for illuminating the scale plate 24 is provided on the back surface side. The light guide plate 25 is made of a transparent synthetic resin material such as an acrylic resin. A hole 28 is provided at the center of the light guide plate 25 through a shaft 27 of the movement 26, and a concave portion 29 is formed on the back side of the light guide plate 25. A light-shielding plate 30 is provided on the back surface of the light guide plate 25, and the lighting device 1 described later is mounted on the light-shielding plate 30 and the main substrate 31. In addition, a pointer 32 is connected to the shaft 27 to issue a scale instruction. The above components are housed in the main body case 33. The main body case 33 is formed of a closed box, a glass 34 is provided on an upper surface, and a rear surface is fixed by a wiring board 35 of an instrument (not shown). The light guide plate 25 is coated with a light-shielding paint except for the concave portion 29 and the scale plate 24 to prevent diffusion of light. The scale plate 24 side of the concave portion 29 is a semi-transparent mirror 25b. The side surface of the concave portion 29 is coated with a white paint 25a.
[0016]
FIG. 6 shows a general instrument 23. The instrument 23 includes a speedometer 23a, a tachometer 23b, a temperature and fuel gauge 23c, and is mounted on a meter panel 36. FIG. 7 does not show a wiring diagram for the wiring substrate 35 on the rear surface of FIG. In the drawing in which the insertion portion 10 of the lighting device 1 provided with the light source 2 for illuminating the scale plate 24 is detachably fitted, four lighting devices 1 are arranged. An example of the lighting device 1 will be described. A connector 7 is connected to a tip of a lead wire 5 of a plug-in portion 10 of the lighting device 1. The insertion part 10 of the other light source 2 is omitted. Reference numeral 37 denotes a wiring connector such as a power supply connected to the meter 23.
[0017]
FIG. 1 schematically shows a lighting device 1 of the present invention.
The lighting device 1 includes a light source 2 containing a plurality of color light sources 3 of light bulbs or light-emitting diodes of different colors, a controller 4, and lead wires 5, 6 laid between the light source 2 and the controller 4. And a connector 7, 8, 9 and the like. It should be noted that an insertion portion 10 for holding the light source 2, a connector 7 connected to the rear end of the lead wire 5 connected to the insertion portion 10, and a connector 8 (8a, 8b, 8c), a connector 9 connected to the rear end of the lead wire 6 connected to the connector 8, and the like. The connector 9 is inserted into the controller 4.
[0018]
FIG. 5 shows an internal structure of another embodiment, and shows a plurality of mounting states of the insertion section 10 of the lighting device 1 to the instrument 23 (other insertion sections are omitted). The insertion part 10 can be easily attached to the fitting hole of the wiring board 35 by removing the bulb of the conventional illumination light source. That is, the light source 2 of the insertion portion 10 is disposed in the concave portion 29 of the light guide plate 25 of the instrument. Further, as shown, the controller 4 is disposed outside the meter 23, and is disposed, for example, in a driver's seat that can be operated by a driver.
[0019]
FIG. 2 shows the light source 2 and an insertion portion 10 thereof, and an engagement portion 10a protrudes from the insertion portion 10. The engagement portion 10a is adapted to engage with the wiring board 35 by rotating the insertion portion 10. Therefore, the light source 2 can be easily attached and detached.
[0020]
FIG. 3 shows a detailed structure of the light source 2. The light source 2 is a color light source 3 composed of four light bulbs or light-emitting diodes having different emission colors, specifically, light-emitting diodes 3a, 3b, 3c, and 3d composed of LEDs that emit blue, green, red, and white light. A lead wire 5 composed of four wires is connected to the color light source 3 including the light emitting diodes 3a and the like. As shown in FIG. 1, the lead wire 5 is connected to the controller 4 via the connectors 7, 8, the lead wire 6, and the connector 9 to control the brightness. In addition, as shown in FIG. 5, a single light source 2 is provided in a concave portion 29 of the light guide plate 25, and is connected to the controller 4 via lead wires 11, 12, and the like.
[0021]
As shown in FIGS. 1 and 5, the controller 4 includes a box main body 15 and operation shafts 16 for controlling the luminance of each color light source 3, and is arranged at a place separated from the meter 23 as described above. In the present invention, the operation shaft 16 includes three operation shafts 16a, 16b, and 16c, and has a structure that is easily operated manually. The box body 15 has a mounting portion 17 to which the connector 9 is connected.
[0022]
FIG. 4 shows an embodiment of the control circuit 18 provided in the box body 15 of the controller 4. The control circuit 18 comprises four control circuits 18a, 18b and 18c corresponding to the three light emitting diodes 3a, 3b and 3c. The control circuits 18a and the like each include a drive circuit 19 using a bipolar transistor or the like. 19a, 19b, 19c, a PWM control adjustment circuit 20 for controlling the current, specifically 20a, 20b, 20c, and a variable resistance controller 21 for controlling the current, specifically 21a, 21b, 21c. The operation shafts 16a, 16b, 16c are connected to the controllers 21a, 21b, 21c. The controllers 21a, 21b, and 21c are connected to the plus side of the vehicle wiring via a terminal P, and the cathode side of the light emitting diodes 3a, 3b, and 3c, which are the color light sources 3, passes through a diode 22 for preventing reverse connection. The terminal P is connected to the minus side of the vehicle wiring.
[0023]
The control circuits 18 (18a, 18b, 18c) configured as described above are individually controlled by manual operation of the operation shafts 16a, 16b, 16c of the controllers 21a, 21b, 21c of variable resistances, respectively. That is, if a blue display is desired, the controller 21a is operated to increase its output, the outputs of the other controllers 21b and 21c are set to zero, and only the control circuit 18a is operated to turn on only the light emitting diode 3a. When other colors of green and red are required, the control circuits 18b and 18c may be controlled respectively. When a mixed color is desired, the light emitting diode 3a, which is the color light source 3 having a desired color, may be turned on. As described above, illumination of a desired color can be obtained.
[0024]
[0025]
【The invention's effect】
As described above, the instrument with the multicolor light-emitting lighting device of the present invention can easily mount the light source insertion portion incorporating the color light source by removing the bulb from the back of the conventional instrument panel. In particular, by manually operating the operation axis of the controller installed in the driver's seat, etc., illumination of a desired color can be easily obtained, and the illumination and brightness of the instrument can be freely controlled according to environmental conditions. it can. As a result, safety can be improved and riding comfort during driving can be improved.
[Brief description of the drawings]
1 is a perspective view illustrating an embodiment of a single light source having a built-in color light source for generating color light and a controller connected thereto according to the present invention;
FIG. 2 is a perspective view showing an outline of an embodiment of a light source having an integral structure of an instrument with a multicolor light-emitting lighting device of the present invention and a holding structure thereof.
FIG. 3 is a partial cross-sectional view illustrating an embodiment of a lighting unit in which a light source in FIG. 2 is arranged.
FIG. 4 is a block diagram showing a control circuit of an embodiment in a controller used in the present invention.
FIG. 5 is a cross-sectional view showing the internal structure of another embodiment of the instrument with a multicolor light-emitting lighting device of the present invention.
FIG. 6 is a plan view showing one embodiment of the instrument with a multicolor light-emitting lighting device of the present invention.
FIG. 7 is a rear view of FIG. 6;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Illumination device 2 Light source 3 Color light source 4 Controller 5 Lead wire 6 Lead wire 7 Connector 8 Connector 9 Connector 10 Insertion part 11 Lead wire 12 Lead wire 13 Connector 14 Connector 15 Box body 16 Operation axis 17 Mounting part 18 Control circuit 19 Drive circuit 20 Adjustment circuit 21 Controller 22 Diode 23 Meter 24 Scale plate 25 Light guide plate 26 Movement 27 Shaft 28 Hole 29 Depression 30 Light shield plate 31 Main board 32 Hand 33 Body case 34 Glass 35 Wiring board 36 Meter panel

Claims (4)

  1. A display unit is provided on the front surface, a scale plate on which a pointer for indicating a scale is arranged, a light guide plate disposed on the back side of the scale plate, and a light source for illuminating the scale plate via the light guide plate. A lighting device for the instrument comprising:
    The light source of the lighting device is a color light source having a plurality of light bulbs or light-emitting diodes that emit light of different colors, and these color light sources are operated by an operation shaft provided on a controller disposed outside the lighting device. A multicolor light-emission lighting instrument characterized in that the luminance of each color light source disposed in the light source is freely adjusted, and the illumination color of the scale plate is variously changed by a change in the luminance of these color light sources.
  2. The instrument with a multicolor illuminating lighting device according to claim 1, wherein the controller is provided with an operation axis for manually adjusting brightness.
  3. A display unit is provided on the front surface, a scale plate on which a pointer for indicating a scale is arranged, a light guide plate disposed on the back side of the scale plate, and a light source for illuminating the scale plate via the light guide plate, A light source luminance control method for controlling the luminance of the light source in a lighting device for an instrument, comprising: a control unit arranged to adjust the luminance of the light source,
    As a light source for illuminating the scale plate, a plurality of color light sources such as a light bulb or a light emitting diode which emits light of different colors is provided therein, and the brightness of the color light sources is manually selected by manually operating axes of the respective color light sources provided in the control means. Wherein the brightness of the color of the color light source is freely adjusted.
  4. 2. A light source which includes at least three color light sources that emit blue, green and red light and is provided in a single sphere as one light source disposed on the back side of the scale plate. The instrument with the multicolor light-emitting lighting device according to claim 3.
JP2002308120A 2002-10-23 2002-10-23 Measuring instrument having multicolor emission illuminator and its light source brightness control method Pending JP2004144547A (en)

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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002308120A JP2004144547A (en) 2002-10-23 2002-10-23 Measuring instrument having multicolor emission illuminator and its light source brightness control method

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007091013A (en) * 2005-09-28 2007-04-12 Denso Corp Display device and program
US7966123B2 (en) 2005-09-28 2011-06-21 Denso Corporation Display device and method for vehicle
JP2011226881A (en) * 2010-04-19 2011-11-10 Nippon Seiki Co Ltd Instrument for vehicle

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007091013A (en) * 2005-09-28 2007-04-12 Denso Corp Display device and program
US7966123B2 (en) 2005-09-28 2011-06-21 Denso Corporation Display device and method for vehicle
JP2011226881A (en) * 2010-04-19 2011-11-10 Nippon Seiki Co Ltd Instrument for vehicle

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