JP2008082713A - Luminance pointer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a luminance pointer of low price which is reduced in number of components. <P>SOLUTION: The luminance pointer 4 composed of a pointer part 14 and a base part 10 comprises: a pointer main body 9 having a luminous surface 8 on the pointer part 14 and the base part 10; a pointer pedestal 11 provided with light receivers 25 and 25A arranged lower part of the base part 10 for receiving light from rear face side and provided with reflection surface 26 and 26A corresponding to the light receivers 25 and 25A; a pointer cap 12 for exposing the luminance surface 8 and covering the upper side of the pointer pedestal 11; and a balancer 13. The pointer pedestal 11 is made of light transparent material, and the balancer 13 is arranged between the base part 10 and pointer pedestal 11 so as at least to expose the reflection surface 26 and 26A. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a light emission indicator used for, for example, a vehicle meter.

For example, Japanese Utility Model Laid-Open No. 5-79434 discloses an example in which a light emission indicator is used in a meter. The light emitting pointer causes the light from the light source 47 provided behind the dial 43 and the light guide 44 constituting the instrument to enter the light receiving member 13 from the light receiving portions 18 and 19 of the light receiving member 13, thereby reflecting the surface 20. , 21 to guide the light into the indicator member 12 to uniformly emit the indicator 33.
Japanese Utility Model Publication No. 5-79434

  However, in the light emission indicator described in Japanese Utility Model Laid-Open No. 5-79434, the light receiving member 13 and the base 15 are separate components. This is because the light receiving member 13 is made of a light-transmitting material, but the base 15 is made of a light-impermeable material to prevent extra light from entering the light receiving member 13 from other than the light receiving portions 18 and 19. However, the number of assembling steps increases because each part is a separate part. In order to solve this, the light receiving member 13 and the pedestal 15 can be integrally molded to form one component, but the cost is increased by integrally molding.

  The present invention has been made in view of such a point, and an object thereof is to reduce the number of parts and to provide an inexpensive light emission guide.

  In order to achieve the above-mentioned object, the present invention comprises an indicator portion and a base portion, a pointer main body having a light emitting surface at the indicator portion and the base portion, a light receiving portion that is disposed below the base portion and receives light from the back side, and the light receiving portion. In a light emitting pointer comprising a pointer pedestal having a reflecting surface formed corresponding to a portion, a pointer cap disposed so as to expose the light emitting surface and cover the upper side of the pointer pedestal, and a balancer, The pointer pedestal is made of a light transmissive material, and the balancer is disposed between the base and the pointer pedestal so that at least the reflecting surface is exposed.

  The light emitting surface has a rear light emitting surface corresponding to the pointer pedestal portion where the reflecting surface is not formed, and the balancer is disposed between the rear light emitting surface and the pointer pedestal.

  Further, the balancer is made of a semi-permeable material.

  The number of parts can be reduced and an inexpensive light emission guide can be obtained.

  The present invention will be described with reference to an embodiment of a light emitting pointer used in a vehicle instrument. FIG. 1 is a partial cross-sectional view of a meter to which a light emission indicator is applied, and FIG. 2 is an exploded perspective view of the light emission indicator. FIG. 3 is a front view showing a state in which a balancer is disposed on a pointer pedestal of the light emission pointer.

  The instrument is composed of a rigid circuit board 1, an instrument body 3 that is mounted in conduction with the circuit board 1 on the back side of the circuit board 1, and has a pivot shaft 2 that extends forward through the circuit board 1. A light emitting pointer 4 fixed to the moving shaft 2, a display board 5 disposed behind the light emitting pointer 4, and a pointer as a light source that is mounted on the circuit board 1 around the rotating shaft 2 and illuminates the light emitting pointer 4. A light emitting diode 6 and a circular cylindrical portion 7 disposed between the display board 5 and the circuit board 1 so as to surround the pointer light emitting diode 6.

  The light emitting pointer 4 is disposed so that the pointer main body 9 having the light emitting surface 8, the pointer base 11 disposed below the base 10 of the pointer main body 9, and the light emitting surface 8 is exposed to cover the upper side of the pointer base 11. The indicator cap 12 and the balancer 13 are provided.

  The pointer main body 9 is made of a light-transmitting (for example, colorless and transparent) synthetic resin such as acrylic or polycarbonate, and is roughly divided into a pointing portion 14 and a base portion 10 covered with the pointer cap 12. A light emitting surface 8 is provided on the front surface side of the indicating unit 14 and the base 10, and a red colored layer 15 is formed on the surface of the light emitting surface 8 by hot stamping, for example, a red foil. For example, a white colored layer 16 is formed by hot stamping a white foil. The base 10 has a substantially disc shape and is provided with two holes 17.

  The pointer cap 12 has a substantially circular inverted cup shape made of a non-permeable (for example, black) synthetic resin, and an upper wall slit 19 is provided on a part of the upper wall 18 so that the light emitting surface 8 is exposed. It is. Further, a side wall slit 21 is also provided on the peripheral wall 20 on the side of the indicator 14, and the indicator 14 is led out from the side wall slit 21.

  The pointer pedestal 11 is made of a light-transmitting (for example, colorless and transparent) synthetic resin. Two bosses 24 provided corresponding to the holes 17 provided in the base portion 10 of the 9, light receiving portions 25 and 25A provided on the pointing portion 14 side of the pointer main body 9 from the mounting portion 23, and the light receiving portions Reflective surfaces 26 and 26A corresponding to 25 and 25A are provided. The two light receiving portions 25 and 25A and the reflecting surfaces 26 and 26A are provided on the surface side of the pedestal portion 22, but may be one. The light emitting surface 8 provided on the pointer main body 9 is also provided at 10 base portions corresponding to 11 pointer bases where the reflecting surfaces 26 and 26A are not formed, and this light emitting surface 8 is used as the rear light emitting surface 8A. (See FIG. 1).

  The balancer 13 balances the emission indicator 4 and is made of a metal material (impermeable) such as brass or zinc. As shown in FIGS. 1 and 3, the balancer 13 includes a rear light emitting surface 8A (base 10) provided on the base 10 of the pointer main body 9 and the pointer base 11 so that at least the reflecting surfaces 26 and 26A are exposed. It is arrange | positioned on the pointer base 11 in between.

  The light emitting pointer 4 is fixed to the meter body 3 by press-fitting the mounting portion 23 of the pointer base 11 into the distal end side of the rotating shaft 2 of the meter body 3. The light emission pointer 4 is rotated according to a predetermined measurement amount, and the instruction unit 14 points to a display unit (not shown) provided on the display plate 5.

  In the light emitting pointer 4 configured in this way, the light emitting surface 8 of the indicating unit 14 is visually recognized in red. Further, when the pointer light emitting diode 6 that emits white light, for example, disposed below the light receiving portions 25 and 25A is turned on, the light from the pointer light emitting diode 6 is incident on the light receiving portions 25 and 25A, and then the reflecting surface 26. , 26A and guided to the indicator 14 side, reflected by the white colored layer 16 formed on the back surface, directed to the front surface side of the indicator 14 and transmitted through the red colored layer 15 formed on the light emitting surface 8. Thus, the light emitting surface 8 emits light (illuminates) in red.

  Note that not all of the light incident from the light receiving portions 25 and 25A is reflected by the reflecting surfaces 26 and 26A, but there is also light that travels upward (to the base 10 side). Accordingly, the light emitting surface 8 (including the rear light emitting surface 8A) provided on the base 10 is emitted (illuminated) by this light. In addition, since the pointer base 11 is made of a light-transmitting synthetic resin, strong light that is incident from other than the light receiving portions 25 and 25A and particularly directed to the rear light emitting surface 8A is suppressed by the balancer 13, so that the entire light emitting surface 8 is balanced. It can emit light well.

  In this way, by using the pointer base 11 in which the light receiving member 13 and the base 15 in the conventional example are formed as a single part as a light-transmitting material, the number of parts can be reduced and an inexpensive light emitting pointer can be obtained. At the same time, the balancer 13 is disposed between the base 10 of the pointer main body 9 and the pointer base 11 so that at least the reflecting surfaces 26 and 26A are exposed, so that the balancer 13 emits light even if the pointer base 11 is a light-transmitting material. The entire surface 8 can emit light with a good balance. In addition, by arranging the balancer 13 between the rear light emitting surface 8A and the pointer base 11, the light emitting surface 8 can be reduced by reducing the number of components in the same manner and suppressing particularly strong light directed toward the rear light emitting surface 8A by an inexpensive method. It becomes possible to emit light in a balanced manner as a whole.

  Although the balancer 13 is made of an impermeable metal material, it may be made of a material having a high specific gravity and semi-permeability (for example, synthetic resin). With this configuration, light that passes through the pointer base 11 and travels toward the base 10 (particularly, the rear light emitting surface 8A) is not completely blocked. Therefore, the light emitting surface 8 extends to the rear side. Even the main body 9 illuminates the light emitting surface (especially the rear light emitting surface) even with a small amount of light transmitted through the balancer 13, so that the brightness of the entire light emitting surface 8 can be easily adjusted. In other words, the balancer 13 balances the light emitting pointer 4, but also has a function of adjusting the brightness of the entire light emitting surface by blocking or attenuating light especially toward the light emitting surface.

The fragmentary sectional view of the meter to which the light emission pointer which shows embodiment of this invention was applied. The disassembled perspective view of the light emission pointer which shows the embodiment. The front view which shows the state by which the balancer was arrange | positioned on the pointer base of the embodiment.

Explanation of symbols

4 Light emission pointer 8 Light emission surface 8A Rear light emission surface 9 Pointer body 10 Base 11 Pointer base 12 Pointer cap 13 Balancer 23 Mounting portion 25, 25A Light receiving portion 26, 26A Reflecting surface

Claims (3)

  A pointer main body having a light emitting surface on the indicating portion and the base, a light receiving portion disposed below the base and receiving light from the back side, and a reflecting surface formed corresponding to the light receiving portion A pointer base disposed so as to expose the light emitting surface and cover the upper side of the pointer base, and a balancer. The pointer base is made of a light-transmitting material. The light emitting pointer is characterized in that the balancer is disposed between the base and the pointer base so that at least the reflecting surface is exposed.   The light emitting surface has a rear light emitting surface corresponding to the pointer pedestal portion where the reflecting surface is not formed, and the balancer is disposed between the rear light emitting surface and the pointer pedestal. Item 2. The light emission guide according to Item 1.   The luminescent indicator according to claim 1 or 2, wherein the balancer is made of a semi-transmissive material.

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