JPH0581641U - Indicator lighting equipment - Google Patents

Abstract

(57) [Abstract] [Purpose] An object of the present invention is to provide an illuminating device for an indicator in which light from a bulb does not sneak into another via a wiring board. [Structure] An inner surface 11a of a glass-epoxy wiring board 11 used for an illumination device of an indicator is shown. The wiring board 1
1 is also provided with a valve hole 2 for mounting a valve as in the conventional example. A copper foil portion on the surface of the wiring substrate 11 is formed in a predetermined range around the valve hole 2, and this portion is used as a light shielding portion 7. Since this wiring board 11 is a double-sided type, conductive patterns (not shown) are formed on both sides. As shown in FIG. 1B, the shape of each light-shielding portion 7 is such that it does not cover the conductive pattern 8 formed on the inner surface 11 a of the wiring board 11. A light-shielding wall is erected on this surface 11a, and an indicator is arranged on it.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an illuminating device for an indicator, and more particularly to an illuminating device for an indicator, which is a centralized indicator used for warning of a vehicle or the like and prevents light of each bulb from leaking to another adjacent indicator.

[0002]

[Prior Art]

 2. Description of the Related Art Conventionally, as an example of a lighting device for an indicator as described above, there is one as shown in FIG. As shown in FIG. 2, a plurality of valve holes 2 are formed in a double-sided wiring board 1 having wiring on both sides, and a light-shielding wall is provided around the valve hole 2 on the inner surface 1a of the wiring board 1. 3 is erected, and an indicator lens 4 on which various indications are drawn is arranged on the upper end surface of the light shielding wall 3. Also, as shown in FIG. 3, wiring 5 is provided around the valve hole 2 on the outer surface 1b of the wiring board 1, and as shown in FIG. When the wire is attached, the wiring 5 and the electrode (not shown) of the valve 6 come into contact with each other.

When a predetermined voltage is applied to the wiring 5 after the bulb 6 is mounted, the bulb 6 lights up and the indicator lens 4 at a position facing the bulb 6 shines and is visually recognized. Will be done. In this case, since the light of the lighted bulb 6 is blocked by the light shielding wall 3, there is no fear that the adjacent indicator lens 4 will be seen as if it were shining.

[0004]

[Problems to be solved by the device]

 However, if the valve is confined by the wiring board, the light-shielding wall, and the indicator lens in this way, the internal temperature rises remarkably, and there is a risk of deformation in a normal substrate having low heat resistance. Therefore, a glass-epoxy wiring board is generally used in such a place.

However, the glass-epoxy wiring board has a property of transmitting light, and therefore the other indicator lenses adjacent to the light are slightly illuminated through the optical path indicated by the arrow A in FIG. 2, which is troublesome. feel it. In this case, this point can be prevented by applying a black coating on the inner surface of the wiring board, but the black coating is not preferable because it may cause a leakage current between the wiring patterns due to humidity. In addition, the coating may peel off due to heat due to aging and may have pinholes, which further increases the number of coating processes, leading to higher costs. In addition, it is not possible to block light by painting with other colors.

An object of the present invention is to provide an illuminating device for an indicator, in which light from a bulb does not circulate to another via a wiring board.

[0007]

[Means for Solving the Problems]

 According to the present invention, a double-sided wiring type glass-epoxy wiring board having a plurality of valve holes is provided upright around the valve holes on the surface of the wiring board so that these valve holes are separated from each other. A light-shielding wall and an indicator lens arranged on the upper end surface of the light-shielding wall and having a predetermined display, and a valve is mounted from the outside of the wiring board, and the bulb electrode is arranged on the outer surface of the board. When the bulb is lit by contact with the conductive pattern and the predetermined display of the indicator lens shines, the conductive pattern is formed in a predetermined range around the valve hole on the inner surface of the substrate in the illuminating device of the indicator. It is characterized by having done.

[0008]

[Action]

 When the bulb is turned on based on the above-mentioned configuration, the indicator lens having a predetermined display arranged above the bulb shines. The light of the bulb that travels in the horizontal direction cannot reach the adjacent indicator lens because it is blocked by the light blocking wall, and the light that tries to sneak into the adjacent portion via the wiring board is also the wiring board. The conductive pattern formed on the inner surface prevents it from going around because it is blocked. Therefore, there is no annoyance because the indicator lens other than the illuminated part does not appear to shine.

[0009]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. The same parts as those described in the prior art will be designated by the same reference numerals and the description thereof will be omitted.

FIG. 1 (a) shows an inner surface 11a of a glass-epoxy wiring board 11 used in an illumination device for an indicator according to an embodiment of the present invention, and the wiring board 11 has a bulb similar to the conventional example. A valve hole 2 for mounting 6 is opened. Around the valve hole 2, a copper foil portion on the surface of the wiring board 11 is formed in a predetermined range, and this portion serves as a light shielding portion 7. Since this wiring board 11 is a double-sided type, a conductive pattern (not shown) is formed on both sides, and the shape of each light shielding portion 7 is as shown in FIG. It is necessary to form the conductive pattern 8 formed on the inner surface 11a so as not to cover the conductive pattern 8.

When the wiring board 11 is used in the above-described conventional illumination device for an indicator, since the light shielding portion 7 is a copper foil, light does not pass therethrough, and light may wrap around to an adjacent portion via the wiring board. Absent. Therefore, the indicator lenses other than the lit portion do not appear to shine and no annoyance occurs. The light-shielding portion 7 can be formed at the same time as a general wiring pattern, and no new material is required, so that the cost does not increase.

[0012]

[Effect of the device]

 As described above, according to the present invention, by using the copper foil portion of the wiring board, it is possible to prevent the light of the bulb from sneaking around to the other side through the wiring board, and to shield the light without increasing the cost. It is possible to provide a lighting device of an indicator having good performance.

[Submission date] August 10, 1992

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0005

[Correction method] Change

[Correction content]

However, the glass-epoxy wiring board has a property of transmitting light, and therefore the other indicator lenses adjacent to the light are slightly illuminated through the optical path indicated by the arrow A in FIG. 2, which is troublesome. feel it. In this case, if the inner surface of the wiring board is coated with black, this point can be prevented, but the black coating may cause a short circuit due to conduction between the patterns. In addition, there is a possibility that leakage current may occur between the wiring patterns due to humidity, which is not preferable. In addition, there is a risk that the coating will peel off due to heat due to aging, or pinholes will form, and the number of coating processes will increase, leading to higher costs. It should be noted that it is not possible to block light by coating with other colors.

[Brief description of drawings]

FIG. 1 is a view showing an inner surface of a glass-epoxy wiring board used for an illumination device of an indicator according to an embodiment of the present invention,
(A) is an overall view and (b) is a partially enlarged view.

FIG. 2 is a side view of a conventional illumination device for an indicator.

FIG. 3 is a diagram showing an outer surface of a wiring board used for a conventional indicator illumination device.

[Explanation of symbols]

 1 Wiring board 2 Bulb hole 3 Light-shielding wall 4 Indicator lens 5 Wiring 6 Valve 7 Light-shielding portion 11 Glass-epoxy wiring board

Claims (1)

[Scope of utility model registration request] 1. A double-sided wiring type glass-epoxy wiring board provided with a plurality of valve holes, and a glass wiring board formed so as to stand upright around the valve holes on the surface of the wiring board and separate these valve holes from each other. A light-shielding wall, and an indicator lens disposed on an upper end surface of the light-shielding wall and having a predetermined display, a bulb is mounted from the outside of the wiring board, and the bulb electrode and the conductive material disposed on the outer surface of the board. In a lighting device for an indicator in which the bulb is lit by contact with a pattern so that a predetermined display of an indicator lens shines, a conductive pattern is formed in a predetermined range around the bulb hole on the inner surface of the wiring board. An illuminating device for an indicator characterized by the above.