JP3504890B2 - Dial structure - Google Patents
Dial structureInfo
- Publication number
- JP3504890B2 JP3504890B2 JP21745299A JP21745299A JP3504890B2 JP 3504890 B2 JP3504890 B2 JP 3504890B2 JP 21745299 A JP21745299 A JP 21745299A JP 21745299 A JP21745299 A JP 21745299A JP 3504890 B2 JP3504890 B2 JP 3504890B2
- Authority
- JP
- Japan
- Prior art keywords
- dial
- light source
- fixing boss
- support piece
- case
- 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
Links
- 238000000465 moulding Methods 0.000 description 3
- 125000006850 spacer group Chemical group 0.000 description 2
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
Landscapes
- Instrument Panels (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
Description
【発明の詳細な説明】
【０００１】
【発明の属する技術分野】本発明は、自動車用のコンビ
ネーションメータ等の文字板構造に関する。
【０００２】
【従来の技術】従来のこの種の文字板構造としては、例
えば図６に示すようなものがある。即ち、図６（ａ）は
コンビネーションメータの一部断面図を示したもので、
ケース１上に文字板固定用ボス３が一体に突設され、図
６（ａ）、図６（ｂ）のように該文字板固定用ボス３に
は、頂部に文字板５の受け面７が設けられ、受け面７に
位置決め用突起９が一体に突設されている。
【０００３】前記文字板５には、位置決め穴１１が設け
られ、該位置決め穴１１が前記位置決め用突起９に嵌合
し、裏面５ａが前記受け面７で支えられている。
【０００４】一方、前記ケース１上には、光源１３が取
付けられている。前記文字板５の裏面５ａ側には、図示
はしないがメータ駆動用のムーブメント等が設けられて
おり、前記光源１３は文字板５からオフセットした位置
に配置されている。
【０００５】そして、前記光源１３から前記文字板５の
裏面５ａ側に光を照射して、文字板５の表面５ｂ側を明
るくし、夜間等の視認性を向上させるようにしている。
【０００６】
【発明が解決しようとする課題】しかしながら、上記の
ように、光源１３が文字板５からオフセットして配置さ
れているため、光源１３からの光が図６（ａ）の矢印Ａ
などのように、文字板固定用ボス３で反射し、文字板５
の裏面５ａに届かない部分を生じ、しかもこの部分は文
字板固定用ボス３が図６（ｂ）のように太い円柱形状を
呈しているため、文字板５の裏面５ａに光の届かない部
分が図６（ｃ）の領域Ｂのように広い範囲に及び、文字
板５の表面５ｂ側の全体の明るさに大きなムラを生じる
原因となっていた。
【０００７】かかる問題に対し、文字板固定用ボス３の
位置と、光源１３の位置との配置を変更したり、光源１
３の数を増やすことなどが考えられるが、文字板固定用
ボス３と光源１３との配置の変更にはスペース的に大き
な制約を伴い、その配置の変更が難しいものとなってい
た。
【０００８】また、光源１３の数を増やすと、部品点数
が増大するばかりでなく、やはりスペース的にも困難を
伴い、大きな制約を招くものとなっていた。
【０００９】本発明は、配置の変更、部品点数の増大を
伴わず、文字板の明るさのムラを抑制することのできる
文字板構造の提供を課題とする。
【００１０】
【課題を解決するための手段】請求項１の発明は、ケー
ス上に突設された文字板固定用ボスに、透光性のある文
字板を取りつけ、前記ケース上に取り付けた光源から前
記文字板の裏面側に光を照射して該文字板の表面側を明
るくする文字板構造において、前記文字板固定用ボス
は、前記ケース上に一体に立設され前記光源の照射方向
に沿って薄肉状に形成される支持片と、該支持片の頂部
に一体に設けられ前記文字板を前記支持片の断面積より
も大きい受け面で支える文字板受け部と、該文字板受け
部の受け面上に一体に突設され前記文字板の位置決め穴
に嵌合する位置決め用突起とよりなることを特徴とす
る。
【００１１】
【００１２】
【００１３】
【発明の実施の形態】図１，図２は、本発明の一実施形
態を示している。図１（ａ）は、本発明の一実施形態を
適用した要部断面図であり、図２は光源との関係で示す
要部の拡大断面図である。尚、図６で説明した構成と対
応する構成部分には同符号を付して説明し、また重複し
た説明は省略する。
【００１４】本発明の実施形態において特徴的な部分
は、文字板固定用ボス３にあるが、まず周辺を概略的に
説明すると、文字板固定用ボス３によって透光性のある
文字板５が取り付けられている。文字板５には透光性の
あるスペーサ１５を介し、指針駆動用のムーブメント１
７がビス１９によって固定されている。
【００１５】尚、上記のように、本発明の一実施形態の
特徴的な部分は、文字板固定用ボス３にあり、前記図１
（ａ）のスペーサ１５は、図１（ｂ）のように、文字板
５の裏面５ａ略全体に渡り、導光板を兼ねたスペーサ２
１に代えることもできる。
【００１６】そして、図２のように、前記文字板５に対
し光源１３がオフセットして配置され、ケース１上に取
り付けられている。
【００１７】前記文字板固定用ボス３は、図２，図３
（ａ）のように、薄肉状の支持片３ａと文字板受け部３
ｂとを備え、文字板受け部３ｂの受け面７上に位置決め
用突起９が一体に突設されたものである。
【００１８】 前記薄肉状の支持片３ａは、ケース１上
に一体に立設され、図３（ａ）のように円板状の文字板
受け部３ｂの周辺部に沿って薄肉状に形成され、該薄肉
状の支持片３ａは、図２の光源１３の照射方向に沿って
薄肉状を呈している。
【００１９】 前記文字板受け部３ｂは、前記支持片３
ａの頂部に一体に設けられている。前記ケース１には、
前記文字板受け部３ｂに対向して型抜き用の穴１ａが設
けられている。文字板受け部３ｂは、文字板５を支持片
３ａの断面積よりも大きい受け面７で支える。
【００２０】尚、前記支持片３ａは光源１３方向に沿っ
た薄肉状を呈していればよいもので、例えば図３（ｂ）
のように、文字板受け部３ｂの中央に沿って薄肉状に形
成することもできる。かかる場合、型抜き用の穴１ａ
は、前記文字板受け部３ｂに対向して支持片３ａの両側
に半円状に形成されるものである。
【００２１】ここで、文字板固定用ボス３の部分の成形
を説明すると、図４のように上型２３と下型２５との間
に、文字板固定用ボス３のための型空間２７が形成さ
れ、文字板固定用ボス３を前記形状に容易に成形するこ
とができる。下型２５の突部２５ａが型抜きされると、
図３（ａ）の前記穴１ａが残存するものである。
【００２２】そして、かかる構成によれば、図２のよう
に、光源１３からの光Ａは文字板固定用ボス３に遮られ
ることなく、その薄肉状の支持片３ａに沿って文字板５
の裏面５ａ側に届くことができ、前記図６（ｃ）のＢの
領域と比較すると明らかなように、図５のＣの部分が影
になることはなく、文字板５の表面５ｂを略ムラなく明
るくすることができる。従って、コンビネーションメー
タの視認性を著しく向上させることができる。
【００２３】
【発明の効果】請求項１の発明では、光源からの光が文
字板固定用ボスに遮られることなく、その薄肉状の支持
片に沿って光が進み、文字板の裏面側に照射することが
できる。従って、文字板の表面側を略ムラなく明るくす
ることができ、文字板の視認性を著しく向上させること
ができる。又、文字板固定用ボスと光源との配置関係を
変更する必要がなく、スペース的に有利であり、また光
源の数を増大する必要がなく、部品点数増大を抑制する
ことができる。
【００２４】
【００２５】Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dial structure such as a combination meter for an automobile. 2. Description of the Related Art As a conventional dial structure of this type, for example, there is one shown in FIG. That is, FIG. 6A shows a partial cross-sectional view of the combination meter.
The dial fixing boss 3 is integrally formed on the case 1 and protrudes therefrom. As shown in FIGS. 6 (a) and 6 (b), the dial fixing boss 3 has a receiving surface 7 of the dial 5 on the top. Are provided, and a positioning projection 9 is integrally provided on the receiving surface 7. The dial 5 is provided with a positioning hole 11, which is fitted in the positioning projection 9, and a back surface 5 a is supported by the receiving surface 7. On the other hand, a light source 13 is mounted on the case 1. Although not shown, a movement for driving a meter or the like is provided on the back surface 5 a side of the dial 5, and the light source 13 is arranged at a position offset from the dial 5. Light is emitted from the light source 13 to the back surface 5a side of the dial 5 to brighten the front surface 5b side of the dial 5 to improve visibility at night and the like. [0006] However, as described above, since the light source 13 is arranged offset from the dial 5, light from the light source 13 is reflected by an arrow A in FIG.
As shown in FIG.
6B, a portion that does not reach the back surface 5a of the dial 5 because the dial fixing boss 3 has a thick cylindrical shape as shown in FIG. 6B. However, this spreads over a wide range as shown in a region B of FIG. 6C, which causes a large unevenness in the overall brightness on the surface 5b side of the dial 5. To solve this problem, the position of the dial fixing boss 3 and the position of the light source 13 are changed,
Although it is conceivable to increase the number of the three, the change of the arrangement of the dial fixing boss 3 and the light source 13 is accompanied by a large space limitation, and it is difficult to change the arrangement. Further, when the number of light sources 13 is increased, not only the number of components is increased, but also the space is difficult, and a great restriction is caused. SUMMARY OF THE INVENTION It is an object of the present invention to provide a dial structure capable of suppressing unevenness in dial brightness without changing the arrangement or increasing the number of parts. According to a first aspect of the present invention, a translucent dial is mounted on a dial fixing boss protruding from a case, and the light source is mounted on the case. In the dial structure in which light is emitted to the back side of the dial to brighten the front side of the dial, the dial fixing boss is integrally erected on the case and extends in the direction of irradiation of the light source. A support piece formed in a thin shape along the support piece, and the dial provided integrally with the top of the support piece,
A dial receiving portion supported by a large receiving surface, and a positioning projection which is integrally provided on the receiving surface of the dial receiving portion and which is fitted into a positioning hole of the dial plate. FIGS. 1 and 2 show an embodiment of the present invention. FIG. 1A is a cross-sectional view of a main part to which an embodiment of the present invention is applied, and FIG. 2 is an enlarged cross-sectional view of a main part in relation to a light source. The components corresponding to the components described with reference to FIG. 6 are denoted by the same reference numerals, and the description thereof will not be repeated. A characteristic part of the embodiment of the present invention is the boss 3 for fixing the dial. First, when the periphery is schematically described, the dial 5 having translucency is formed by the boss 3 for fixing the dial. Installed. A movement 1 for driving the hands is provided on the dial 5 via a translucent spacer 15.
7 is fixed by screws 19. As described above, a characteristic part of the embodiment of the present invention is the boss 3 for fixing the dial, as shown in FIG.
As shown in FIG. 1B, the spacer 15 shown in FIG. 1A extends over substantially the entire back surface 5a of the dial 5 and serves as a light guide plate.
It can be replaced with 1. Then, as shown in FIG. 2, the light source 13 is arranged offset from the dial 5 and mounted on the case 1. The dial fixing boss 3 is shown in FIGS.
As shown in (a), the thin supporting piece 3a and the dial receiving portion 3
The positioning projection 9 is integrally provided on the receiving surface 7 of the dial receiving portion 3b. The thin supporting piece 3a is integrally erected on the case 1, and is formed in a thin shape along the periphery of the disk-shaped dial receiving portion 3b as shown in FIG. , said thin-shaped support piece 3a has the shape of a <br/> thin shape along the irradiation direction of the light source 13 of FIG. The dial receiving portion 3b is provided with the support piece 3
a is provided integrally at the top of the a. In case 1,
A punching hole 1a is provided opposite the dial receiving portion 3b. The dial receiving portion 3b supports the dial 5 with a support piece.
It is supported by a receiving surface 7 larger than the sectional area of 3a. Note that the support piece 3a only needs to have a thin shape along the direction of the light source 13, for example, as shown in FIG.
As shown in the above, it can be formed in a thin shape along the center of the dial receiving portion 3b. In such a case, the hole 1a for die cutting
Are formed in a semicircular shape on both sides of the support piece 3a facing the dial receiving portion 3b. The molding of the dial fixing boss 3 will now be described. As shown in FIG. 4, a mold space 27 for the dial fixing boss 3 is provided between the upper die 23 and the lower die 25. Thus, the dial fixing boss 3 can be easily formed into the above-mentioned shape. When the projection 25a of the lower mold 25 is cut out,
The hole 1a shown in FIG. 3A remains. According to this configuration, as shown in FIG. 2, the light A from the light source 13 is not interrupted by the dial fixing boss 3 but along the thin supporting piece 3a.
6C, the portion of C in FIG. 5 does not become a shadow, and the front surface 5b of the dial 5 is substantially Brightness can be made evenly. Therefore, the visibility of the combination meter can be significantly improved. According to the first aspect of the invention, the light from the light source travels along the thin supporting piece without being blocked by the dial fixing boss, and the light is directed to the back side of the dial. Can be irradiated. Therefore, the front side of the dial can be made bright without substantially unevenness, and the visibility of the dial can be significantly improved. Also, there is no need to change the positional relationship between the dial fixing boss and the light source, which is advantageous in terms of space, and it is not necessary to increase the number of light sources, and it is possible to suppress an increase in the number of parts. [0024]
【図面の簡単な説明】
【図１】（ａ）は、本発明の一実施形態を適用したコン
ビネーションメータの断面図、（ｂ）は、同他の例の断
面図である。
【図２】一実施形態に係り、光源と文字板固定用ボスと
の関係を示す要部拡大断面図である。
【図３】（ａ）は一実施形態に係る文字板固定用ボスの
斜視図、（ｂ）は変形例に係る文字板固定用ボスの斜視
図である。
【図４】文字板固定用ボスの成形を示す成形型の要部断
面図である。
【図５】一実施例に係る作用説明図である。
【図６】従来例に係り、（ａ）は文字板固定用ボスと光
源との関係を示す要部断面図、（ｂ）は文字板固定用ボ
スの斜視図、（ｃ）は作用説明図である。
【符号の説明】
１ ケース
３ 文字板固定用ボス
３ａ 支持片
３ｂ 文字板受け部
５ 文字板
５ａ 裏面
５ｂ 表面
７ 受け面
９ 位置決め用突起BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1A is a cross-sectional view of a combination meter to which an embodiment of the present invention is applied, and FIG. 1B is a cross-sectional view of another example. FIG. 2 is an enlarged cross-sectional view of a main part showing a relationship between a light source and a dial fixing boss according to one embodiment. FIG. 3A is a perspective view of a dial fixing boss according to one embodiment, and FIG. 3B is a perspective view of a dial fixing boss according to a modification. FIG. 4 is a sectional view of a main part of a molding die showing molding of a dial fixing boss. FIG. 5 is an operation explanatory view according to an embodiment. 6 (a) is a sectional view of a main part showing a relationship between a dial fixing boss and a light source, FIG. 6 (b) is a perspective view of the dial fixing boss, and FIG. It is. [Description of Signs] 1 Case 3 Dial plate fixing boss 3a Support piece 3b Dial receiving portion 5 Dial 5a Back surface 5b Front surface 7 Receiving surface 9 Positioning protrusion
Claims (1)
に、透光性のある文字板を取りつけ、前記ケース上に取
り付けた光源から前記文字板の裏面側に光を照射して該
文字板の表面側を明るくする文字板構造において、 前記文字板固定用ボスは、前記ケース上に一体に立設さ
れ前記光源の照射方向に沿って薄肉状に形成される支持
片と、該支持片の頂部に一体に設けられ前記文字板を前
記支持片の断面積よりも大きい受け面で支える文字板受
け部と、該文字板受け部の受け面上に一体に突設され前
記文字板の位置決め穴に嵌合する位置決め用突起とより
なることを特徴とする文字板構造。(57) [Claims 1] A translucent dial is attached to a dial fixing boss protruding from a case, and a light source mounted on the case is used to mount the dial on the dial. In a dial structure for illuminating the back side with light to brighten the front side of the dial, the dial fixing boss is integrally formed on the case and is formed in a thin shape along the irradiation direction of the light source. a support piece to be formed, before the dial is provided integrally with the top of the support piece
A dial receiving portion supported by a receiving surface larger than the cross-sectional area of the support piece ; and a positioning projection integrally projecting from the receiving surface of the dial receiving portion and fitting into a positioning hole of the dial. A dial structure characterized by that.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21745299A JP3504890B2 (en) | 1999-07-30 | 1999-07-30 | Dial structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21745299A JP3504890B2 (en) | 1999-07-30 | 1999-07-30 | Dial structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001042799A JP2001042799A (en) | 2001-02-16 |
| JP3504890B2 true JP3504890B2 (en) | 2004-03-08 |
Family
ID=16704465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21745299A Expired - Fee Related JP3504890B2 (en) | 1999-07-30 | 1999-07-30 | Dial structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3504890B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020083796A (en) * | 2001-04-30 | 2002-11-04 | 현대자동차주식회사 | Mounting structure of cluster for vehicle |
-
1999
- 1999-07-30 JP JP21745299A patent/JP3504890B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2001042799A (en) | 2001-02-16 |
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