JP5362289B2 - Display device - Google Patents

Description

  The present invention relates to a display device, and more particularly, to a display device that includes a light guide member that guides light from a light source to a display panel, a pointer, and the like and functions as, for example, a vehicle meter.

In a vehicle, a display device that functions as a speed meter or an engine rotation speed meter is generally known, and various techniques have been introduced in order to improve display (lighting) quality. FIG. 9 is a diagram showing a cross-sectional shape of such a display device (see, for example, Patent Document 1). In addition, a display device in which the light source is offset laterally has been proposed in order to reduce luminance unevenness of the illumination light source (see, for example, Patent Document 2).
JP 2005-156503 A JP 2006-113004 A

  Incidentally, there are severe demands for improvement of display devices used for vehicles and the like, and a simple structure capable of reducing costs while always achieving a desired quality is always required. For example, in the technique disclosed in Patent Document 1, a desired display quality is realized by providing a plurality of light sources, but there is room for improvement in terms of cost. Further, in the technique disclosed in Patent Document 2, there is no room for improvement as in Patent Document 1 because no consideration is given to the efficient use of light from the light source.

  This invention is made | formed in view of such a condition, and it aims at providing the technique which can solve the said subject.

One embodiment of the present invention relates to a display device. The display device includes a display panel having a design portion including a plurality of designs having translucency and serving as an index; a light source that irradiates light to the back surface of the display panel; A display device comprising: a pointer that emits light by causing the light of the light source to enter inside; and a light guide means that guides the light of the light source with respect to the design portion of the display panel and the pointer when the light of the light source is irradiated The plurality of indicators of the design portion of the display panel are unevenly distributed with respect to the axis of the pointer, and the light source is offset toward the uneven distribution of the plurality of indicators, The light guide means has a substantially oval shape in which the minor axis direction of the oval coincides with the offset direction, and a part of the light emitted from the light source is incident on the pointer portion from the first light incident surface. A part of the light emitted from the light source is different from the first light incident surface. It is incident on the design part from the second light incident surface.
Further, the light source is composed of two light sources arranged equidistant from the axis of the pointer, and a straight line connecting the two light sources is offset in the uneven distribution direction of the design, A light receiving portion that is disposed opposite to the light emission positions of the two light sources and that allows light emitted from the light sources to enter, and a shaft tube portion that includes a shaft hole through which the shaft of the pointer is inserted. May be.
Further, the light source is constituted by one, the light source is offset in the direction of uneven distribution of the design from the axis of the pointer, the light guide means is disposed to face the light emission position of the light source, and You may provide the light-receiving part which injects the light emitted from the said light source, and the axial cylinder part provided with the axial hole which penetrates the axis | shaft of the said pointer.
Moreover, in the said axial cylinder part, the surface facing the said light source of the said axial cylinder part may function as the said light-receiving part.
In addition, in the space formed on the back side of the display panel, the light emitted from the light guide means is reflected in the direction of the design portion in order to irradiate the light of the light source to the back surface of the display panel. Reflecting means may be provided.
Another embodiment of the present invention also relates to a display device. The display device includes a display panel having a design portion that includes a plurality of designs that are translucent and include an index, a light source that irradiates light to the back surface of the display panel, a rotating light around an axis, A display device comprising: a pointer that emits light by causing light to enter inside; and a light guide means that guides the light of the light source relative to the design portion of the display panel and the pointer when the light of the light source is irradiated. The light source is offset from the axis of the pointer toward the outside in the center direction of the deflection angle around the axis of the pointer, and the light guide means includes a minor axis direction of an ellipse and the offset direction. Are substantially oval shapes, a part of the light emitted from the light source is incident on the pointer part from the first light incident surface, and a part of the light emitted from the light source is The light is incident on the design portion from a second light incident surface different from the first light incident surface.

  ADVANTAGE OF THE INVENTION According to this invention, the display apparatus which can utilize the light of a light source efficiently can be provided.

  The best mode for carrying out the invention (hereinafter referred to as “embodiment”) will be described below with reference to the drawings.

<First Embodiment>
In the present embodiment, in the display device functioning as a speed meter, the light source is arranged offset upward from the axis center of the pointer portion. This realizes a structure that efficiently illuminates the design portions (numerals and figures) of the dial plate in the speedometer and the like even when many design portions (numbers and figures) are provided on the upper side.

  Fig.1 (a) has shown the external appearance (plan view) of the display apparatus 1 which concerns on this embodiment, for example, functions as a speedometer of a vehicle. FIG. 1B shows the light guide member 20 disposed inside the display device 1 by dotted lines, and also shows the movable range R1 (swing angle) and non-movable range R2 of the pointer portion 50. . In appearance, the display device 1 has a substantially circular outer shape, and a part of the lower side is removed in the drawing. FIG. 2A is a cross-sectional view taken along the line AA of the display device 1 of FIG. Further, FIG. 2B is a cross-sectional view taken along the line AA of the display device 1 and shows a path of light output from the light source 41 described later, and is a part not related to the description of the light path. The reference numerals of the configuration are omitted.

  As illustrated, the display device 1 includes a light guide member 20 that functions as a prism, a dial plate 30, a wiring board 40, and a pointer portion 50. In appearance, the display device 1 (dial plate 30) has a substantially circular outer shape, and a part of the lower side is removed.

  As shown mainly in FIG. 2A, the case 10 is made of a synthetic resin or the like and is formed in a substantially cylindrical shape in accordance with the outer shape of the dial plate 30, and a member constituting the display device 1 therein. Are housed in order to protect them from impact and dust. The case 10 includes a bracket or the like (not shown) and is attached to an instrument panel or the like of the vehicle. The case 10 has a light reflecting surface 11 and a light guide member mounting portion 12.

  The light reflecting surface 11 has a mortar shape (conical shape) that is inclined so as to gradually approach the wiring board 40 side from the periphery of the one end portion 10 a of the case 10 toward the axis C of the case 10. The light reflecting surface 11 is subjected to a light reflecting process such as mirror finishing or aluminum vapor deposition. An elliptical through hole 11c is provided in a substantially central portion of the light reflecting surface 11, and a light guide member fixing portion 12 is provided in the through hole 11c. In the present embodiment, the through hole 11c is formed slightly offset upward with respect to the axial center C.

  The light guide member fixing portion 12 forms a cylindrical protrusion that protrudes from the light reflecting surface 11 along the periphery of the through hole 11 c of the light reflecting surface 11. And the light guide member fixing | fixed part 12 provided in the through-hole 11c, and also the light guide member 20 fixed to the light guide member fixing | fixed part 12 are distribute | arranged slightly offset with respect to the axial center C upwards. The The light guide member fixing portion 12 is provided with a pair of positioning holes (not shown) formed in a rectangular shape at positions facing each other along the major axis direction (lateral direction), and pins 20d of the light guide member 20 described later. (For example, see FIG. 3B) is inserted. In addition, the light guide member fixing portion 12 is formed such that outer peripheral edges of positions facing each other along the minor axis direction (longitudinal direction) are recessed inward, and a pair of fixing claws 13 are formed at these positions. Is provided. The light guide member 20 is attached to the light guide member attachment portion 12 in a superimposed manner.

  The pair of fixing claws 13 are provided so as to extend in the opposite directions from the inside of the light guide member mounting portion 12 toward the outside thereof, and the tip portions thereof engage with the locking end portions 20a of the light guide member 20 described later. The light guide member 20 is fixed to the light guide member mounting portion 12. The pair of fixed claws 13 are formed integrally with the case 10.

  In the non-movable region R2, for example, when a display device is configured as a composite meter including a sub meter such as a fuel meter in addition to a speed meter, a dial plate including an index for the sub meter and the indicator are indicated. A pointer or the like is sequentially stacked on the front surface, and a movement or the like for driving the pointer of the submeter is disposed on the back surface side. In addition, this embodiment is not provided with a submeter, and the member which comprises it is not arrange | positioned.

  3A and 3B are views showing the shape of the light guide member 20, FIG. 3A is a plan view, FIG. 3B is a front view, FIG. 3C is a side view, and FIG. A bottom view (rear view) and FIG. 3 (e) are perspective views. The light guide member 20 shown here is an example, and as will be described later, the light guide member 20 has a shape that can supply light emitted from the light source 41 to the design of the pointer 52 and the dial 30 with a desired light amount. Good. As shown in FIG. 1B and FIG. 3A, the light guide member 20 has a shape in which a part of the first and second circular shapes 20e1, 20e2 that are symmetric in plan view (top view) are overlapped. The centers C11 and C12 of the first and second circular shapes 20e1 and 20e2 are arranged on a long axis X1 extending in the horizontal direction in the drawing. The light guide member 20 is made of, for example, a transparent synthetic resin such as an acrylic resin, and functions as a prism that guides incident light directly or indirectly to the light reflecting surface 11. The function of the light guide member 20 will be described in detail later. As shown in FIG. 2, the light guide member 20 is attached to the light guide member fixing portion 12 in a space between the wiring board 40 and the dial 30. At this time, as shown in FIG. 1 (b), FIG. 2 (b), and FIG. 3 (a), the shaft center C (the center of the pointer shaft 51) is slightly offset upward. .

  As shown in FIGS. 1 to 3, the light guide member 20 includes first and second locking end portions 20 a 1 and 20 a 2 (which are simply referred to as “locking end portion 20 a” when they are not distinguished from each other) and light incident. A surface 20b, a cylindrical portion 20c, a pair of left and right pins 20d, and a light guide portion 20e are provided.

  As described above, the light guide unit 20e has a substantially oval shape in plan view, and is a shape in which a part of the first and second circular shapes 20e1 and 20e2 are overlapped, and is in the short side direction (axis Y1 direction). The central portions of the opposing outer peripheral edges are formed so as to be squeezed inward.

  The upper surface side of the light guide portion 20e, that is, the surface side located opposite to the surface overlapped with the light guide member mounting portion 12, is centered from the outer peripheral edges of the first and second circular shapes 20e1 and 20e2 to the centers 20e3 and 20e4. The conical surface 27 has a mortar shape so that it gradually approaches the lower surface side of the light guide portion 20e, that is, the surface side overlapped with the light guide member mounting portion 12 (see FIG. 2A and FIG. 3A). Is formed. The lower surface side of the light guide portion 20e is formed so as to protrude into a substantially truncated cone shape so as to be fitted to the light guide member mounting portion 12 and the inner through hole 11c.

  A cylindrical portion 20c penetrating the light guide portion 20e is provided at the center of the light guide portion 20e. Further, as shown in FIG. 2A and FIG. 3D, a light incident surface 20b (20b1, 20b2) for introducing light output from a light source 41 described later is provided on the lower surface side of the light guide 20e. It is configured. Specifically, the annular end portion of the cylindrical portion 20c is the first light incident surface 20b1, and the surface opposite to the conical surface 27 located outside the light incident surface 20b1 is the second light incident surface 20b2. It is. In addition, a pair of pins 20d protruding in a columnar shape are provided in the vicinity of the outer peripheral edge facing the longitudinal direction on the lower surface side of the light guide portion 20e.

  In the vicinity of the outer peripheral edge facing the short direction on the lower surface side of the light guide portion 20e, the tip is formed in a substantially L-shaped cross section so that the tip protrudes outward, that is, in a direction facing the locking projection 13b. A pair of locking end portions 20a1 and 20a2 are provided.

  The dial plate 30 is formed of a light-transmitting synthetic resin in a flat plate shape. Characters (for example, numbers from “0” to “180”) for displaying the current speed measurement amount on the surface or linear shapes are displayed. A plurality of indicators 31 such as graphics are provided. Further, as shown in FIG. 1, the dial 30 has a back surface opposed to the light reflecting surface 11 and a locking structure (not shown) on the one end 10 a side of the case 10 (for example, a plurality of attachments that lock each other). Nail etc.). A through hole through which the pointer shaft 51 is inserted is provided at the center of the dial 30.

  A translucent colorant is printed on the front surface side of the dial 30 except for a portion where the plurality of indicators 31 of the dial 30 are provided, and a translucent colorant is printed on the back side of the dial 30. Yes. Therefore, when light is irradiated from the back surface side of the dial 30 by the light guide member 20 and the light reflecting surface 11, the light passes through the plurality of indexes 31 and emits them.

  The wiring board 40 is a well-known printed circuit board provided with a wiring pattern made of a thin-film conductor, and a light source 41 that emits light that enters the light guide member 20 is provided on one surface thereof. On this surface, a movement 42 for driving the pointer 52 in accordance with the speed measurement amount is provided. In addition to these, an electronic component (not shown) for realizing the function of the display device 1 is provided on the wiring board 40. The wiring board 40 has a surface on which the two light sources 41 (first and second light sources 41a and 41b) are provided facing the inside of the case 10 and a locking structure (not shown) on the other end portion 10b of the case 10 (for example, Are fixed by a plurality of attachment claws or the like that are locked together.

  The light source 41 is, for example, a well-known light-emitting diode (LED) of surface mount type, on one surface of the wiring board 40 located inside the case 10 and the first light incident surface of the light guide member 20. It is arrange | positioned in the position facing 20b1. FIG. 4 is a diagram schematically illustrating the bottom view of the light guide member 20 of FIG. 3D with the first and second light sources 41a and 41b overlapped. More specifically, the first and second light sources 41a and 41b are arranged at positions opposed to the respective centers 20e3 and 20e4 of the first and second circular shapes 20e1 and 20e2. That is, the centers 20e3 and 20e4 (axis D in FIG. 2A) of the first and second circular shapes 20e1 and 20e2 are offset ΔT with respect to the pointer shaft 51 (axis C in FIG. 2A). Accordingly, the straight line (axis β) connecting the first and second light sources 41a and 41b is offset upward in the drawing with respect to the pointer shaft 51. This offset amount ΔT is about several mm. The light source 41 emits light toward the first and second light incident surfaces 20b1 and 20b2 when power is supplied.

  The movement 42 is a well-known stepping motor, and is fixed to the other surface of the wiring board 40 located outside the case 10 by screws or the like (not shown). The rotation shaft 42 a of the movement 42 passes through a through hole (not shown) provided in the wiring board 40, and the tip thereof is positioned inside the case 10. The movement 42 rotates the rotating shaft 42a in the forward and reverse directions based on a control signal corresponding to a speed measurement amount sent from a control device (not shown).

  The pointer part 50 is positioned on the surface of the dial 30 and indicates a plurality of indicators 52 provided on the dial 30 according to the speed measurement amount. The guide shaft 51 is fixed to the rotating shaft 42 a of the move meft 42 and transmits the rotation of the rotating shaft 42 a to the pointer 52. The pointer portion 50 is formed of a synthetic resin such as a transparent acrylic resin. From the first light incident surface 20b1 of the light guide member 20 provided in the vicinity of the other end portion of the pointer shaft 51, the light from the light source 41 is emitted. The pointer 52 emits light by making the light incident. Therefore, the vicinity of the pointer shaft 51 of the pointer 52 forms an inclined surface 55 in a cross-sectional view, and the inclined surface 55 reflects light from the first light incident surface 20b1 and guides it toward the distal end of the pointer 52.

  Next, a path of light output from the light source 41, that is, a path of light in the light guide member 20, will be described collectively based mainly on FIG.

  As described above, the light source 41 is disposed so as to be offset upward with respect to the axis C of the pointer portion 50. A part of the light emitted from the light source 41 enters the light guide member 20 from the first light incident surface 20b1, passes through the cylindrical portion 20c, and enters the pointer portion 50. The light incident on the pointer unit 50 is reflected by the reflecting surface 53 of the pointer unit 50 toward the tip of the pointer 52. As a result, the pointer 52 emits light with a desired brightness. Further, part of the light emitted from the light source 41 enters the light guide member 20 from the second light incident surface 20 b 2, is refracted and reflected by the inner surface of the conical surface 27, and is emitted from the outer peripheral surface 28 which is an output surface. Then, it goes to the light reflecting plate 11 on the outer peripheral side. Then, the light is reflected by the light reflecting plate 11 toward the dial plate 30, and the design (index) of the dial plate 30 is irradiated with a desired brightness.

  As described above, the pointer 52 has a lower 90-degree range around the pointer shaft 51 (axis C) as the non-movable range R2, and this range is not used for speed display of the speedometer. That is, in the dial 30, the light with respect to the upper movable range R <b> 1 is important. According to the above configuration, light can be efficiently introduced into the design arranged in the upper region of the dial 30 that is important for display. In other words, by arranging the light source 41 in the dial plate 30 on the region side where many design parts (indexes) indicated by the pointers 52 are arranged, it is possible to realize a structure that efficiently illuminates the design part. As a result, a desired display quality can be realized without providing a large number of light sources, and the degree of freedom in selecting the light source 41 at the time of design is improved. Moreover, it is a simple structure and does not lead to an increase in cost.

<Second Embodiment>
In the first embodiment, the first and second light sources 41 are arranged symmetrically offset on the upper side where the design is concentrated. However, in this embodiment, one light source 141 is used, They are offset by a predetermined amount (ΔT1). In accordance with this, the light guide member 120 is configured by one circular shape 120e. Hereinafter, although it demonstrates with reference to drawings, the same code | symbol is attached | subjected about the same structure as 1st Embodiment, description is abbreviate | omitted, and the light guide member 120 is mainly demonstrated.

  FIG. 5A shows the appearance of the display device 101 according to the present embodiment, and FIG. 5B shows the light guide member 120 arranged inside the display device 101 with a dotted line and a pointer portion. It is the figure which showed 150 movable range R11 (deflection angle) and non-movable range R12. 6A is a cross-sectional view taken along the line AA in FIG. 5A, and FIG. 6B is a cross-sectional view taken along the line BB in FIG. 5B.

  As shown in the figure, the display device 101 includes a light guide member 120 that functions as a prism, a dial plate 30, a wiring board 40, and a pointer portion 150. In appearance, the display device 101 (the dial plate 30) has a substantially circular outer shape. In addition, the shape from which a part of lower part was removed may be sufficient like 1st Embodiment.

  The case 10 has a light reflecting surface 111 and a light guide member mounting portion 112. The light reflecting surface 111 is a mortar-shaped (conical) outer peripheral light reflecting surface inclined so as to gradually approach the wiring board 40 side from the periphery of the one end portion 10a of the case 10 toward the axis C of the case 10. 111a and an inner peripheral light reflecting surface 111b formed in parallel with the dial 30 on the ring inside. As shown in FIGS. 5 and 6, a through hole 111c is formed in the inner peripheral light reflecting surface 111b at a center position in the left-right direction and a position slightly offset upward in the vertical direction. A light guide member fixing portion 112 for attaching the light guide member 120 is provided.

  7A and 7B are diagrams illustrating the shape of the light guide member 120, in which FIG. 7A is a plan view, FIG. 7B is a front view, and FIG. 7C is a bottom view (rear view). Yes. As shown in FIGS. 5B and 7A, the light guide member 120 has a light guide portion 120e having a substantially circular shape in plan view (top view), and is formed in a mortar shape. Yes. As shown in FIG. 6, the light guide member 120 is attached to the light guide member fixing portion 112 in the space between the wiring board 40 and the dial plate 30 as in the first embodiment.

  The upper surface side of the light guide portion 120e, that is, the surface side opposite to the surface overlapped with the light guide member mounting portion 112 is gradually from the outer peripheral edge toward the center 120e3, that is, on the wiring board 40 side of the light guide portion 120e. The conical surface 127 is formed in a mortar shape so as to approach the side of the surface overlapped with the light guide member mounting portion 112. The lower surface side of the light guide portion 120e is formed so as to protrude into a substantially truncated cone shape so as to be fitted to the light guide member mounting portion 112 and the inner through hole 111c.

  A cylindrical portion 120c penetrating the light guide portion 120e is provided in a portion located slightly downward from the center in plan view of the light guide portion 120e. A surface on the lower surface side of the light guide portion 120e, more specifically, an annular surface on the wiring board 40 side of the cylindrical portion 120c functions as a light incident surface 120b for introducing light emitted from the light source 141 described later.

  On the lower surface side of the light guide part 120e, a pair of locking end parts 120a formed in a substantially L-shaped cross section are provided in the vicinity of the outer peripheral edge opposite to the vertical direction so that the tip protrudes outward. ing. That is, in the first embodiment, the locking end portions 20a (20a1, 20a2) are provided symmetrically in the left-right direction, but in the present embodiment, the locking end portions 120a are provided symmetrically in the vertical direction.

  Next, the path of light output from the light source 141 will be described mainly with reference to FIG. FIG. 8 is an enlarged view of the light guide member 20 of FIG. 6A and an additional optical path.

  As shown in FIG. 6, the light source 141 is arranged offset by an offset amount ΔT1 upward to the position indicated by the axis D with respect to the axis C of the pointer part 150. The light emitted from the light source 141 enters the light guide member 120 from the light incident surface 120b. A part of the incident light passes through the cylindrical portion 120 c and enters the pointer portion 150. The light incident on the pointer unit 150 is reflected by the reflecting surface 153 of the pointer unit 150 toward the tip of the pointer 152. As a result, the pointer 152 emits light with a desired brightness. Further, a part of the light incident on the light guide member 120 is refracted and reflected by the inner surface of the conical surface 127 and travels toward the outer peripheral light reflecting surface 111a. Then, the light is reflected toward the dial 30 by the outer peripheral light reflecting surface 111a, and the design (index 31) of the dial 30 is irradiated with a desired brightness.

  According to the display device 101 having such a configuration, the same effect as that of the first embodiment can be realized.

  The present invention has been described based on the embodiments. This embodiment is an exemplification, and it is understood by those skilled in the art that various modifications can be made to each of those components and combinations thereof, and such modifications are also within the scope of the present invention.

It is the figure which showed the external appearance of the display apparatus based on 1st Embodiment. It is sectional drawing of the display apparatus based on 1st Embodiment. It is the figure which showed the shape of the light guide member based on 1st Embodiment. It is the figure which overlapped and showed typically the 1st and 2nd light source about the bottom view of the light guide member of FIG.3 (d) based on 1st Embodiment. It is the figure which showed the external appearance of the display apparatus based on 2nd Embodiment. It is sectional drawing of the display apparatus based on 2nd Embodiment. It is the figure which showed the shape of the light guide member based on 2nd Embodiment. It is the figure which expanded the light guide member of Fig.6 (a) based on 2nd Embodiment, and added the optical path. It is sectional drawing of the display apparatus based on a prior art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,101 Display apparatus 10 Case 11 Light reflection surface 11c Through-hole 12 Light guide member fixing | fixed part 20, 120 Light guide member 20b Light incident surface 20c Cylindrical part 20d Pin 20e Light guide part 27 Conical surface 30 Dial 41 Light source 50 Pointer part 51 Pointer shaft 52 Pointer 111a Outer peripheral light reflecting surface 111b Inner peripheral light reflecting surface

Claims (6)

A display panel having a design portion including a plurality of designs that have translucency and include an index, a light source that irradiates light to the back surface of the display panel, and a light that rotates about an axis to make the light of the light source inside A display device comprising: a pointer that emits light by being incident; and a light guide unit that guides the light of the light source relative to the design portion of the display panel and the pointer when the light of the light source is irradiated;
The plurality of indicators of the design portion of the display panel are unevenly distributed with respect to the axis of the pointer,
The light source is offset in a direction in which the plurality of indicators are unevenly distributed;
The light guide means has a substantially oval shape in which the minor axis direction of an oval coincides with the offset direction, and a part of light emitted from the light source is incident on the pointer portion from a first light incident surface. Then, a part of the light emitted from the light source is incident on the design portion from a second light incident surface different from the first light incident surface. The light source is composed of two light sources arranged at an equal distance from the axis of the pointer, and a straight line connecting the two light sources is offset in the uneven distribution direction of the design,
The light guide means includes a light receiving portion that is disposed to face the light emission positions of the two light sources and that allows light emitted from the light sources to enter, and a shaft hole that passes through the shaft of the pointer. The display device according to claim 1, further comprising: a shaft tube portion. The light source is composed of one, the light source is offset from the axis of the pointer in the direction of uneven distribution of the design,
The light guide means is disposed opposite to the light emission position of the light source and receives a light emitted from the light source, and a shaft tube portion including a shaft hole through which the shaft of the pointer is inserted, The display device according to claim 1, comprising:   The display device according to claim 2, wherein a surface of the shaft tube portion that faces the light source of the shaft tube portion functions as the light receiving unit.   In the space formed on the back side of the display panel, in order to irradiate the light of the light source to the back surface of the display panel, the light reflected from the light guide means is reflected in the direction of the design portion. The display device according to claim 1, further comprising means. A display panel having a design part including a design having translucency and including a plurality of indicators, a light source that irradiates light to the back surface of the display panel, a light that rotates around an axis, and the light of the light source is contained inside A display device comprising: a pointer that emits light by being incident; and a light guide unit that guides the light of the light source relative to the design portion of the display panel and the pointer when the light of the light source is irradiated;
The light source is offset from the axis of the pointer toward the outside in the center direction of the deflection angle around the axis of the pointer,
The light guide means has a substantially oval shape in which the minor axis direction of an oval coincides with the offset direction, and a part of light emitted from the light source is incident on the pointer portion from a first light incident surface. Then, a part of the light emitted from the light source is incident on the design portion from a second light incident surface different from the first light incident surface.

Images