JP3001249B2 - Instrument pointer lighting device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pointer illuminating device for an instrument installed in an automobile.

2. Description of the Related Art As a conventional example of performing reflection illumination in a dark place at night or the like of a general mechanical instrument installed in an automobile, for example, if a light source is turned on, a pointer and a scale plate are reflected and illuminated by the illumination light. Thus, the indicated value can be visually checked, but in a dark place, the surface of the hands and the entire surface of the scale are reflected and illuminated, so that the contrast relationship with the scale, that is, the light emission luminance of the hands is low. In addition, there is a problem that it is difficult to immediately confirm a detailed instruction value during operation. In order to solve this problem, for example, as shown in FIG. 4, a fluorescent pigment which is excited and emits light in response to ultraviolet rays is mixed into the surface of the instrument pointer 22 which rotates along the surface of the instrument dial 1. By irradiating ultraviolet light excited by emitting light by printing the paint 3 and illuminating a light source disposed in front of the hands 2, the surface of the hands 2 can be clearly displayed. (For example, Japanese Utility Model Publication No. 63-76248).

[Problems to be Solved by the Invention] However, in the instrument pointer having such a structure, the surface of the instrument pointer is excited by ultraviolet light to emit light, and the luminous display luminance of the pointer is improved. Is not improved, there is a problem that the emission luminance of the pointer is high, and furthermore, the lighting balance of the entire instrument is poor and it is difficult to see.

[Means for Solving the Problems] The present invention has been made in view of such a conventional problem. A paint containing a fluorescent pigment is printed on the surface of a pointer, and the surface of the pointer is excited and emitted with ultraviolet light. At the same time, a light irradiating section for irradiating the light guided to the pointer toward the dial surface is provided on the back side of the pointer, and at night or the like, the pointer is excited and emitted by ultraviolet rays and emitted from the pointer. It is an object of the present invention to provide a lighting device of an instrument pointer that can illuminate a part of a character (indicating portion) with visible light, thereby enabling illumination with excellent visibility and illumination with a sense of quality. .

[Embodiment] Hereinafter, the present invention will be described in detail based on an embodiment shown in FIGS. 1 to 3.

Reference numeral 11 denotes an instrument dial, and a display section 12 such as scales and display characters is provided near the periphery of the dial 11. Reference numeral 13 denotes a pointer that rotates along the surface of the dial 11, and the pointer 13 is rotated by an operation of a movement (not shown). As shown in FIG. 2, the pointer 13 includes a pointer body 14 formed of an opaque member and a pointer body 14.
The lower part has a shape (structure) to be fitted to the pointer body 14 from the lower side, and furthermore, a support shaft part 15 and a light receiving / reflecting part 16 attached to the pointer of the movement, and light reflected by the reflecting part. It consists of a transparent light guide 18 having a light guide 17 that guides light in the longitudinal direction of the hands and radiates to the dial surface,
Moreover, on the surface of the pointer main body 14 and in the longitudinal direction of the pointer,
The index 19 made of a paint mixed with a fluorescent pigment that emits and emits light upon receiving ultraviolet rays has a narrow width smaller than the width of the pointer main body 14. The pointer 13 as shown in FIG. 1 is formed by fixing the light guide 18 to the lower side of the pointer main body 14 having such a structure by using an appropriate adhesive.

By attaching the pointer 13 configured as described above to the instrument, for example, turning on the light source 20 at night and introducing the light to the light guide 18 of the pointer 13 via the light guide 21, Light is emitted from the light guide 18 toward the dial 11 as shown in FIG. 1, and as a result, the vicinity of the indicator of the pointer on which the dial 11 operates is brightly illuminated. At the same time, the indicator 19 provided on the surface of the pointer 13 is illuminated and displayed by turning on an ultraviolet light emitting lamp (not shown), so that it is easy to confirm the finger position of the pointer.

As described above, in the present embodiment, the narrow index provided on the surface of the pointer main body 14 is excited and emitted by receiving ultraviolet rays, and the pointer 13 corresponds to the indicating portion of the dial 13. Since it is illuminated by the visible light emitted from the light guide 18, a narrow index 19 is excited and emitted along the center in the longitudinal direction of the pointer 13 displayed as a silhouette, and the narrow index 19 is formed inside the pointer 13 displayed as a silhouette. Since the width index is displayed by light emission, the pointer's silhouette display and the excitation light emission of the index allow the pointer to be displayed with high contrast as if it were clearly rising, and as a result, the finger's finger position can be clearly seen. It is possible to provide an instrument pointer illuminating device which can be confirmed and has a high-class feeling in the illuminating means of the pointer, and has a design effect and a fingering effect which cannot be obtained conventionally.

[Effects of the Invention] As described above, according to the present invention, the visible light for illumination is provided from the direction of the pointer axis to the center of rotation of the pointer 13 which is disposed close to the face of the dial 11 and the pointing surface is formed on the light shielding surface. Let light rays enter,
With the visible light, the dial 11
Along with illuminating the surface, an indicator 19 formed on the pointing surface of the pointer 13 along the center in the longitudinal direction of the pointing surface and having a narrower width than the width of the pointer 13 is excited and emits light in response to ultraviolet light. This is a lighting device of an instrument pointer which is applied with a paint mixed with a fluorescent pigment and irradiates ultraviolet rays from the front of the pointer 13 to excite the indicator 19 to emit light. In addition, since the narrow index excited and emitted is displayed, the pointer is displayed with high contrast as if it is clearly rising, and as a result, the finger position of the pointer must be clearly visually confirmed. In addition to this, there is a feature that an illuminating means of the pointer is given a high-grade feeling, and an instrument pointer illuminating device having a design effect and a fingering effect which cannot be obtained conventionally can be provided.

[Brief description of the drawings]

FIG. 1 is a side view of an essential part showing an embodiment of an instrument pointer illumination device according to the present invention, FIG. 2 is a plan view thereof, FIG. 3 is an exploded explanatory view showing a configuration of the pointer, and FIG. It is explanatory perspective view of. 11 Dial plate, 12 Scale, etc. 13 Pointer, 14 Pointer body 15 Support shaft, 16 Light receiving / reflecting unit 17 Light guide unit, 18 Light guide 19 Indicator, 20 Light source 21 Light guide

Claims (1)

(57) [Claims] 1. A visible light beam for illumination is made incident from the direction of the pointer axis to the center of rotation of the pointer (13), which is arranged close to the dial (11) surface and whose pointing surface is formed on the light-shielding surface. Irradiating the dial (11) surface from the back surface of the pointer (13) with the visible light, and forming the pointer (13) on the pointing surface along the longitudinal center of the pointing surface; The index (19), which is narrower than the width of (13), is applied with a paint mixed with a fluorescent pigment that excites and emits light upon receiving ultraviolet rays, and the index is obtained by irradiating ultraviolet rays from the front of the pointer (13). (19) An instrument pointer illumination device characterized by exciting and emitting light.