JP6544051B2 - Lighting device - Google Patents

Lighting device Download PDF

Info

Publication number
JP6544051B2
JP6544051B2 JP2015111128A JP2015111128A JP6544051B2 JP 6544051 B2 JP6544051 B2 JP 6544051B2 JP 2015111128 A JP2015111128 A JP 2015111128A JP 2015111128 A JP2015111128 A JP 2015111128A JP 6544051 B2 JP6544051 B2 JP 6544051B2
Authority
JP
Japan
Prior art keywords
light
display
light source
entrance
incident
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.)
Expired - Fee Related
Application number
JP2015111128A
Other languages
Japanese (ja)
Other versions
JP2016223927A (en
Inventor
正臣 上野
正臣 上野
濃 渡部
濃 渡部
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Seiki Co Ltd
Original Assignee
Nippon Seiki Co Ltd
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 Nippon Seiki Co Ltd filed Critical Nippon Seiki Co Ltd
Priority to JP2015111128A priority Critical patent/JP6544051B2/en
Publication of JP2016223927A publication Critical patent/JP2016223927A/en
Application granted granted Critical
Publication of JP6544051B2 publication Critical patent/JP6544051B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Details Of Measuring Devices (AREA)
  • Instrument Panels (AREA)

Description

本発明は、光源から発せられた照明光にて表示部を照明する照明装置に関するものである。   The present invention relates to an illumination device that illuminates a display unit with illumination light emitted from a light source.

従来より、例えば指針や複数の表示部のように異なる照明対象をそれぞれ照明するために、複数の同心円状の導光体を備え、この導光体を一体成形する照明装置が知られている。この照明装置は、指針を照明する光源と、指標部を照明する光源と、それぞれの光源に対応した導光体とを有した照明装置であって、複数の導光体を連結部で連結することでコストを削減することができるというものである。   2. Description of the Related Art Conventionally, there have been known lighting devices provided with a plurality of concentric light guides and integrally molding the light guides so as to respectively illuminate different illumination targets such as a pointer and a plurality of display units. This illumination apparatus is an illumination apparatus having a light source for illuminating a pointer, a light source for illuminating the index part, and a light guide corresponding to each light source, and a plurality of light guides are connected by a connecting part Cost can be reduced.

特開２００２−２９６０８０号公報Unexamined-Japanese-Patent No. 2002-296080 特開２００４−２１２１２６号公報JP 2004-212126 A

しかしながら、このような照明装置は、導光体が連結部によって連結されているため、それぞれの照明対象を単独で照明すると、照明対象ではない箇所に光漏れが生じ商品性が低下するという問題を有している。   However, in such an illumination device, since the light guides are connected by the connecting portion, when the respective illumination objects are illuminated alone, light leakage occurs in a portion which is not the illumination object, and there is a problem that the productability is reduced. Have.

また、異なる発光色の光源で照明する場合、少ない光漏れであっても色が混ざってしまい、混色した光が露光した場合、見た目の品質が劣ってしまうという問題点があった。   In addition, in the case of illumination with light sources of different luminescent colors, colors may be mixed even if there is little light leakage, and when mixed light is exposed, the quality of appearance may be degraded.

そこで、本発明は、この問題に鑑みなされたものであり、異なる発光色の光源を用いても、混色した光が表示領域に達することを抑制する照明装置を提供するものである。   Therefore, the present invention has been made in view of this problem, and provides an illumination device that prevents mixed light from reaching a display area even if light sources of different emission colors are used.

本発明は、第１の光源によって照明される第１の表示部と、前記第１の光源とは異なる照明色の第２の光源によって照明される第２の表示部と、を有した表示板と、
前記第１の光源の光が入光する第１の入光部と、前記第１の表示部の背後に位置し前記第１の入光部から入光した前記第１の光源の光を前記第１の表示部に導光する第１の導光部と、を有した第１の導光体と、
前記第２の光源の光が入光する第２の入光部と、前記第２の表示部の背後に位置し前記第２の入光部から入光した前記第２の光源の光を前記第２の表示部に導光する第２の導光部と、を有した第２の導光体と、
前記第１の入光部と前記第２の入光部とを連結する連結部と、
を備えた照明装置において、
前記連結部は、前記第１の入光部に入光した光と、前記第２の入光部に入光した光とを前記表示板の方向へ進行させるための突出部を有し、
前記突出部は、前記表示板のうち前記第１の表示部と前記第２の表示部とが表示されない遮光部の背面側に形成されているものである。
According to the present invention, there is provided a display board comprising: a first display unit illuminated by a first light source; and a second display unit illuminated by a second light source of an illumination color different from the first light source. When,
A first light entrance to which the light of the first light source is incident, and a light of the first light source which is located behind the first display section and is incident from the first light entrance. A first light guide having a first light guide for guiding light to the first display unit;
A second light entrance to which the light of the second light source enters, and a light of the second light source which is located behind the second display section and which is incident from the second light entrance. A second light guide having a second light guide for guiding light to a second display unit;
A connecting portion connecting the first light incident portion and the second light incident portion;
In a lighting device provided with
The connecting portion has a protrusion for advancing the light entering the first light entrance and the light entering the second light entrance toward the display plate .
The projecting portion is formed on the back side of the light shielding portion where the first display portion and the second display portion are not displayed in the display plate .

異なる発光色の光源を用いても、混色した光が表示領域に達することを抑制する照明装置を提供することができる。   Even when light sources of different emission colors are used, it is possible to provide a lighting device that suppresses mixed light from reaching the display area.

本発明の実施形態を示す正面図。FIG. 1 is a front view showing an embodiment of the present invention. 図１のＡ−Ａ断面図。AA sectional drawing of FIG. 同実施形態の導光体の正面図。The front view of the light guide of the embodiment. 図３のＢ−Ｂ断面図。BB sectional drawing of FIG.

以下、添付図面に基づいて、本発明の実施形態を説明する。照明装置は、表示板２と、第１，第２の光源３，４と、第１，第２の導光体５，６とを備える。   Hereinafter, an embodiment of the present invention will be described based on the attached drawings. The illumination device includes a display plate 2, first and second light sources 3 and 4, and first and second light guides 5 and 6.

表示板２は、透明樹脂に数字及び目盛りを印刷したものであり、第１の指標部２ａと、第２の指標部２ｂと、遮光部２ｃとを有している。表示板２の第１の指標部２ａは、第１の導光体５の前面に配置され、第１の導光体５より照射される光によって透過照明される。表示板２の第２の指標部２ｂは、第２の導光体６の前面に配置され、第２の導光体６より照射される光によって透過照明される。表示板２の遮光部２ｃは、第１の指標部２ａ及び第２の指標部２ｂの背景となる遮光部２ｃを有している。   The display plate 2 is a transparent resin printed with numbers and graduations, and has a first indicator 2a, a second indicator 2b, and a light shield 2c. The first index portion 2 a of the display plate 2 is disposed on the front surface of the first light guide 5 and is transmitted and illuminated by the light emitted from the first light guide 5. The second index portion 2 b of the display plate 2 is disposed on the front surface of the second light guide 6, and is transmitted and illuminated by the light emitted from the second light guide 6. The light blocking portion 2c of the display plate 2 has a light blocking portion 2c which is a background of the first index portion 2a and the second index portion 2b.

第１の光源３は、例えば白色のチップ型発光ダイオードからなり、第１の導光体５の第１の入光部５ａから第１の導光体５の内部に光を供給できるように配設される（図３参照）。第１の光源３は回路基板１０から供給される電力によって発光し、第１の導光体５を介して第１の指標部２ａを透過照明する。   The first light source 3 is made of, for example, a white chip type light emitting diode, and is disposed so that light can be supplied from the first light incident portion 5 a of the first light guide 5 to the inside of the first light guide 5. Provided (see FIG. 3). The first light source 3 emits light by the power supplied from the circuit board 10, and transmits and illuminates the first indicator 2 a via the first light guide 5.

第２の光源４は、例えば赤色のチップ型発光ダイオードからなり、第２の導光体６の第２の入光部６ａから第２の導光体６の内部に光を供給できるように配設される（図３参照）。第２の光源４は回路基板１０から供給される電力によって発光し、第２の導光体６を介して、第２の指標部２ｂを透過照明する。   The second light source 4 is made of, for example, a red chip type light emitting diode, and is arranged such that light can be supplied from the second light entrance portion 6 a of the second light guide 6 to the inside of the second light guide 6. Provided (see FIG. 3). The second light source 4 emits light by the power supplied from the circuit board 10, and transmits and illuminates the second indicator 2 b via the second light guide 6.

第１の導光体５は、第１の光源３の光が入光する第１の入光部５ａと、第１の指標部２ａへ光を導光する第１の導光部５ｂと、を備えている。   The first light guide 5 includes a first light incident portion 5a to which the light of the first light source 3 enters and a first light guide portion 5b to guide the light to the first index portion 2a. Is equipped.

第２の導光体６は、第２の光源４の光が入光する第２の入光部６ａと、第２の指標部２ｂへ光を導光する第２の導光部６ｂと、を備えている。   The second light guide 6 includes a second light entrance portion 6a to which the light of the second light source 4 enters and a second light guide portion 6b to guide light to the second index portion 2b. Is equipped.

第１の入光部５ａは、第１の指標部２ａに面した第１の導光部５ｂの端部から、第１の光源３へ延びる垂れ下がり形状となっている。   The first light incident portion 5a has a hanging shape extending to the first light source 3 from an end portion of the first light guide portion 5b facing the first index portion 2a.

第２の入光部６ａは、第２の指標部２ｂに面した第２の導光部６ｂの端部から、第２の光源４へ延びる垂れ下がり形状となっている。   The second light entrance portion 6a has a hanging shape extending to the second light source 4 from the end of the second light guide portion 6b facing the second index portion 2b.

第１の入光部５ａと第２の入光部６ａとの間には、連結部８が形成されている。連結部８には、第１の光源３の光と第２の光源４の光とが混色する箇所に、表示板２に向かって混色した光が進行するように表示板２方向へ回路基板１０の板面に対して垂直に突出した突出部８１が形成されている。突出部８１は、表示板２の第１の指標部２ａと第２の指標部２ｂ以外の遮光部２ｃの背面側に位置するように、第１の入光部５ａと第２の入光部６ａとの間であって、第１の導光部５ｂと第２の導光部６ｂよりも表示板２方向へ突出しない形状となっている。また、突出部８１は、光が出射される面Ｐが 曲面からなることで、光が集光されて放射される。   A connecting portion 8 is formed between the first light incident portion 5a and the second light incident portion 6a. In the connecting portion 8, the circuit board 10 is directed toward the display plate 2 so that the mixed light toward the display plate 2 travels to a place where the light of the first light source 3 and the light of the second light source 4 mix. A projecting portion 81 is formed to project perpendicularly to the plate surface of the plate. The first light entrance portion 5a and the second light entrance portion 81 are positioned on the back side of the light shielding portion 2c other than the first index portion 2a and the second index portion 2b of the display plate 2 It has a shape that does not protrude in the direction of the display plate 2 more than the first light guide 5b and the second light guide 6b. Further, in the projecting portion 81, the light is collected and emitted because the surface P from which the light is emitted is a curved surface.

ケース体９は、白色樹脂からなるものであり、第１，第２の導光体５，６，回路基板１０等を保持するものである。ケース体９は、第１，第２の導光体５，６の背後に配設され、第１，第２の導光体５，６からの漏光を反射させることにより、効率よく表示板２を照明することができる。   The case body 9 is made of a white resin, and holds the first and second light guides 5 and 6, the circuit board 10 and the like. The case body 9 is disposed behind the first and second light guides 5 and 6, and efficiently reflects the leaked light from the first and second light guides 5 and 6 to display the case 2. Can be illuminated.

回路基板１０は、ガラスエポキシ樹脂等の高熱伝導率の材質からなり、第１，第２の光源３，４と電気的に接続され、第１，第２の光源３，４に電力を供給するものである。   The circuit board 10 is made of a material with high thermal conductivity such as glass epoxy resin, is electrically connected to the first and second light sources 3 and 4, and supplies power to the first and second light sources 3 and 4. It is a thing.

本実施形態のように、第１の光源３によって照明される第１の指標部２ａと、第１の光源３とは異なる照明色の第２の光源４によって照明される第２の指標部２ｂと、を有した表示板２と、第１の光源３の光が入光する第１の入光部５ａと、第１の指標部２ａの背後に位置し第１の入光部５ａから入光した第１の光源３の光を第１の指標部２ａに導光する第１の導光体５と、第２の光源４の光が入光する第２の入光部６ａと、第２の指標部２ｂの背後に位置し第２の入光部６ａから入光した第２の光源４の光を第２の指標部２ｂに導光する第２の導光体６と、第１の入光部５ａと第２の入光部６ａとを連結する連結部８と、を備えた照明装置において、連結部８は、第１の入光部５ａに入光した光と、第２の入光部６ａに入光した光とを表示板２の方向へ進行させるための突出部８１を有していることによって、混色した光を表示板方向へ逃がすことで、光源の光が表示領域に達することを抑制できる。   As in the present embodiment, the first indicator 2 a illuminated by the first light source 3 and the second indicator 2 b illuminated by the second light source 4 of an illumination color different from the first light source 3 , And the first light incident portion 5a to which the light of the first light source 3 enters, and the light incident from the first light incident portion 5a located behind the first index portion 2a. The first light guide 5 for guiding the light of the first light source 3 to the first index portion 2a, the second light entrance portion 6a for the light of the second light source 4 to enter, and A second light guide 6 positioned behind the second index portion 2b and guiding the light of the second light source 4 incident from the second light entrance portion 6a to the second index portion 2b; In the illumination device including the connecting portion 8 that connects the light receiving portion 5a of the second light receiving portion 6a, the connecting portion 8 includes the light having entered the first light receiving portion 5a, and the second light receiving portion 5a. Display the light that entered the light entrance 6a of By having a protrusion 81 for advancing the second direction, by releasing the light mixing to the display panel direction, it can suppress the light source reaches the display region.

また、突出部８１、表示板２のうち第１の指標部２ａと第２の指標部２ｂとが表示されない遮光部２ｃの背面側に形成されていることによって、表示領域ではない遮光部２ｃの背面であって混色しやすい箇所でもある入光部に、表示板方向に突出した突出部８１を設けて、混色した光を表示板方向へ逃がすことで、光源の光が表示領域に達することを抑制できる。   Further, by forming the protrusion 81 and the second index portion 2b of the display plate 2 on the back side of the light shield 2c where the first index portion 2a and the second index portion 2b are not displayed, the light shield 2c is not a display area. A projection 81 projecting in the direction of the display plate is provided at the light entrance portion which is also a back face and a place where color mixing is likely to occur, and the light of the light source reaches the display area by releasing mixed light toward the display plate. It can be suppressed.

２ 表示板
２ａ 第１の指標部（第１の表示部）
２ｂ 第２の指標部（第２の表示部）
３ 第１の光源
４ 第２の光源
５ 第１の導光体
５ａ 第１の入光部
５ｂ 第１の導光部
６ 第２の導光体
６ａ 第２の入光部
６ｂ 第２の導光部
８ 連結部
９ ケース体
１０ 回路基板
２１ 遮光部
８１ 突出部
2 Display board 2a 1st indicator part (1st display part)
2b Second indicator (second display)
DESCRIPTION OF SYMBOLS 3 1st light source 4 2nd light source 5 1st light guide 5a 1st light incident part 5b 1st light guide part 6 2nd light guide 6a 2nd light incident part 6b 2nd light guide Light part 8 Connection part 9 Case body 10 Circuit board 21 Light shielding part 81 Projection part

Claims (1)

第１の光源によって照明される第１の表示部と、前記第１の光源とは異なる照明色の第２の光源によって照明される第２の表示部と、を有した表示板と、
前記第１の光源の光が入光する第１の入光部と、前記第１の表示部の背後に位置し前記第１の入光部から入光した前記第１の光源の光を前記第１の表示部に導光する第１の導光部と、を有した第１の導光体と、
前記第２の光源の光が入光する第２の入光部と、前記第２の表示部の背後に位置し前記第２の入光部から入光した前記第２の光源の光を前記第２の表示部に導光する第２の導光部と、を有した第２の導光体と、
前記第１の入光部と前記第２の入光部とを連結する連結部と、
を備えた照明装置において、
前記連結部は、前記第１の入光部に入光した光と、前記第２の入光部に入光した光とを前記表示板の方向へ進行させるための突出部を有し、
前記突出部は、前記表示板のうち前記第１の表示部と前記第２の表示部とが表示されない遮光部の背面側に形成されていることを特徴とする照明装置。
A display panel comprising: a first display illuminated by a first light source; and a second display illuminated by a second light source of an illumination color different from the first light source;
A first light entrance to which the light of the first light source is incident, and a light of the first light source which is located behind the first display section and is incident from the first light entrance. A first light guide having a first light guide for guiding light to the first display unit;
A second light entrance to which the light of the second light source enters, and a light of the second light source which is located behind the second display section and which is incident from the second light entrance. A second light guide having a second light guide for guiding light to a second display unit;
A connecting portion connecting the first light incident portion and the second light incident portion;
In a lighting device provided with
The connecting portion has a protrusion for advancing the light entering the first light entrance and the light entering the second light entrance toward the display plate .
The said protrusion part is formed in the back side of the light-shielding part by which the said 1st display part and the said 2nd display part are not displayed among the said display panels, The illuminating device characterized by the above-mentioned.
JP2015111128A 2015-06-01 2015-06-01 Lighting device Expired - Fee Related JP6544051B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2015111128A JP6544051B2 (en) 2015-06-01 2015-06-01 Lighting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2015111128A JP6544051B2 (en) 2015-06-01 2015-06-01 Lighting device

Publications (2)

Publication Number Publication Date
JP2016223927A JP2016223927A (en) 2016-12-28
JP6544051B2 true JP6544051B2 (en) 2019-07-17

Family

ID=57747865

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2015111128A Expired - Fee Related JP6544051B2 (en) 2015-06-01 2015-06-01 Lighting device

Country Status (1)

Country Link
JP (1) JP6544051B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6663885B2 (en) * 2017-06-29 2020-03-13 矢崎総業株式会社 Vehicle display device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6195106B2 (en) * 2013-05-30 2017-09-13 日本精機株式会社 Lighting device

Also Published As

Publication number Publication date
JP2016223927A (en) 2016-12-28

Similar Documents

Publication Publication Date Title
US20180107067A1 (en) Backlight device and liquid-crystal display device
US20180107068A1 (en) Backlight device and liquid crystal display device
JP5642631B2 (en) Instrument lighting device
US7793448B1 (en) Display module and illumination sign device using the same
US7789519B2 (en) Illuminated display window for LED and/or LC displays
KR101620149B1 (en) Lighting apparatus of clock for vehicle
JP6220765B2 (en) Surface lighting device
JP6544051B2 (en) Lighting device
JP5337219B2 (en) Illuminated license plate license plate
TWI580893B (en) Light emitting module and display device
JP6150607B2 (en) Light emitting device
US11150395B2 (en) Light guide and light emitting device
JP2012173231A (en) Annular light guide device
JP6195106B2 (en) Lighting device
JP6645218B2 (en) Display device
TWM484897U (en) Light-guiding device for light-emitting diode (LED)
JP2014121240A (en) Light emitting display part
JP6634756B2 (en) Display device
JP5822740B2 (en) Surface light source device
JP2020021541A (en) Illuminating device
JP2015105862A (en) Display device
JP2005043833A (en) Liquid crystal display device
JP2014108715A (en) Shift position luminaire
JP7050555B2 (en) Touch panel lighting structure and in-vehicle equipment
JP2009156730A (en) Measuring instrument device

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20180413

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20190226

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20190228

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20190416

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20190521

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20190603

R150 Certificate of patent or registration of utility model

Ref document number: 6544051

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

LAPS Cancellation because of no payment of annual fees