JP2709581B2 - Microminiature power bulb connection and fixing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ultra-small low-power light bulb (hereinafter referred to as a bead bulb) suitable for use as a vanity mirror disposed in a sun visor or the like provided in front of a driver of a moving body such as an automobile or a light source for an interior light. Mini-bulb).

[0002]

2. Description of the Related Art As a vanity mirror for a sun visor of this kind, there has hitherto been one disclosed in Japanese Patent Publication No. 7-41817. This conventional technology includes a mirror, a lighting unit, and a cover that opens and closes the front of the mirror. The opening and closing of the cover causes the lamp of the lighting unit to blink, and a lens that covers the front of the lamp has a front or a front. In a vanity mirror which is a part of a switch for blinking a lamp provided on a printed circuit board by moving backward, in a vanity mirror, biasing means for freely moving the lens in the front-rear direction and biasing the lens forward. The lens is moved rearward by closing the cover, and the lens is moved forward by the biasing means by opening the cover, and the biasing means constitutes a contact made of a leaf spring material. The contact is formed by opening both ends in a C-shape, and two contact elements are arranged on the printed circuit board at a distance, and the lens is moved forward. The distance between the two ends of the contact provided on the lens is shortened, and the two contact elements on the printed circuit board are short-circuited.When the lens is moved backward, the distance between the two ends of the lens contact is widened on the printed circuit board. And a repulsive force is stored at both ends of the contact point of the lens.

[0003]

In the prior art described above, when the straight glass tube lamp is turned on, the lens is moved forward and away from the lamp to reduce the influence of the heat caused by the lighting of the lamp, and to reduce the effect of the lamp. At the time of lighting without heat generation, the depth dimension, that is, the thickness when not in use can be reduced to some extent by moving the lens backward so as to approach the lamp.

However, in this prior art, a glass tube fuse-shaped straight tube lamp is used as a key light source lamp,
Since it protrudes higher from the plate surface together with the mounting fittings, there is naturally a limit even if the thickness is reduced.In addition, the connection between the above fittings and the power supply line can be made by soldering the coated electric wires or using tab terminals. However, there is a problem that it is almost impossible to automate the assembly because it is a means using a connecting tool such as a caulking tool.

[0005] In addition, at both ends of the straight tube lamp,
Since the connection bracket is largely exposed in the lens as it is, there is a problem that a conductive tool or the like is easily accidentally touched during maintenance and inspection or repair, and there is a risk of electric shock accident or short circuit accident. Further, a general mini-bulb has a problem that a heating tool is required since its lead is soldered to the conductive land of the mounting plate.

According to the present invention, in order to eliminate the above-mentioned problems, a lead wire of a mini-bulb, usually called a bead ball, is sandwiched between a ridge and a connecting piece provided near a glass ball holding bullet of a mounting plate. By lowering the height of the protruding members for connection, making it possible to connect the mini light bulb to the power supply without using a heating tool such as a soldering iron, and promoting automatic assembly of lighting equipment, The purpose is to ensure electrical safety around mini-bulbs.

[0007]

SUMMARY OF THE INVENTION An object of the present invention is to provide a device for connecting a lead portion of a light bulb to a connecting piece opposed to an electrically insulating mounting plate and fixing the lead portion together with the light bulb to the mounting plate. In the construction, a projecting piece for partially holding the glass bulb of the mini-bulb is protruded from a plastic-molded mounting plate, and an elongated jetty having two leads extending from one end of the glass bulb protruding from the mounting plate. Between the outer surface of the jetty and the pieces adjacent to both sides of the jetty, and the lead is embedded and protected. Was.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, as shown in FIGS. 1 and 2, a basic form of the present invention is a connecting piece 7 mounted on an electrically insulating mounting plate 1 in a well-known sun visor or a vehicle interior light. The lead 5 of the bulb 2 is connected to the
When the apparatus for fixing the miniature bulb 2 to the mounting plate 1 is constructed, the glass ball 3 of the mini-bulb 2 is partially clamped as shown in FIGS. 2 and 4 on the mounting plate 1 formed by injection molding of a plastic such as polypropylene resin. The glass balls 3 are sandwiched between the projectiles 4 and 4 and the radiating holes 1a are provided through the mounting plate 1 thereunder.

Further, two leads 5 and 5 composed of a filament conducting current extending from one end of the glass bulb 3 are extended along the side surface of an elongated jetty 6 protruding from the mounting plate 1 so as to extend the jetty 6. 2 and 4, the lead 5 is interposed as shown in FIG. 4 between the connecting piece 7 and the outer surface of the intermediate part, as shown in FIG. I do. Further, as shown in FIGS. 3 and 7, the extra length portions of the leads 5, 5 are embedded in the grooves 9 between the outer surface of the jetty 6 and the front and rear piece pieces 8, 8 provided adjacent to both sides thereof. Thus, the lead 5 is protected to constitute the connection and fixing device for a microminiature power lamp according to the present invention.

In these configurations, the connecting piece 7 is an L-shaped conductive plate, and the back groove 1A of the mounting plate 1 is arranged through a long hole 6a penetrating along the outer surface of the ridge 6 of the mounting plate 1. Of the connecting piece 7 with the rising portion thereof facing upward, and a pressing protrusion 1B protruding from the upper surface of the mounting plate 1 outside the long hole 6a.
Thereby, the connection piece 7 is pressed in the direction of the jetty 6 as shown in FIG.

Next, the glass bulb 3 of the mini-bulb 2 is pushed and pinched between the pieces 4 and 4 against the resilience as shown in FIG. While being extended in this manner, the two pieces are electrically connected by tightly press-fitting between the both sides of the jetty 6 and the connection piece 7 against the elasticity of the connection piece 7 as shown in FIG.

When the power supply voltage is supplied and applied to each of the connecting pieces 7 by a known means, the mini-bulb 2 is turned on. Therefore, there is no danger of conductive tools such as a driver touching the lead 5 unnecessarily at the time of inspection or the like.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to apply the present invention to the connection of a vanity mirror to a light source lamp in a sun visor, as shown in FIG.
c, through a locking hole 1d, a locking projection 10a of a transparent plate 10 (so-called lens) made of, for example, polycarbonate is slim-fitted against the elasticity of these materials, so that the transparent plate 1
0 can be provided on the mounting plate 1 so as to be flush with the upper surface of the peripheral portion thereof, and the projecting pieces 10A, 10
8A, the upper portion of the connection piece 7 holding the leads 5 and 5 is tightly pressed in the direction of the jetty 6 as shown in FIG. 8, so that the conduction between the lead 5 and the connection piece 7 can be further better ensured.

[0014]

As described above, the present invention has the following advantages. By inserting the lead wire of a mini bulb, usually called a bead ball, between the pier and the connecting piece near the glass ball clipping piece of the mounting plate, the mini bulb can be used without using a heating tool such as a soldering iron. It can be connected to a power source, and the automatic assembly of lighting fixtures can be promoted by fitting and attaching multiple members while reducing the protruding height of the connecting members, and electrical safety around mini-bulbs can be secured. There are many effects.

According to the second aspect, the lower surface projection 10 of the transparent plate 10 is provided.
By pressing the connection piece 7 in the direction of the jetty 6 with the lead 5 tightly at A, the effect of maintaining the contact resistance between the connection piece 7 and the lead 5 during conduction for a long time in a much smaller state could be added.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an example of an embodiment of the present invention.

FIG. 2 is a perspective view showing an example of an embodiment of the present invention.

FIG. 3 is a plan view showing an example of an embodiment of the present invention.

FIG. 4 is a sectional view taken along line AA of FIG. 3;

FIG. 5 is a sectional view taken along line BB of FIG. 3;

6 is a sectional view taken along line CC of FIG. 3;

FIG. 7 is a perspective view showing an embodiment of the present invention.

FIG. 8 is an enlarged sectional view of a main part showing an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Mounting plate 1c Rising wall 2 Ultra small power bulb 3 Glass ball 4 Bullet piece 5 Lead 6 Jetty 7 Connection piece 8 Piece piece 9 Groove 10 Transparent plate 10A Projection piece

Claims (2)

(57) [Claims] 1. An apparatus for connecting a lead portion of a light bulb to a connection piece opposed to an electrically insulating mounting plate and fixing the lead portion together with the light bulb to the mounting plate. Bullets 4, 4 for holding the glass bulb 3 of the bulb 2 are projected, and two leads 5, 5 extending from the glass bulb 3 are opposed to the jetty 6 projecting from the mounting plate 1 and the outer surface thereof. A groove 9 sandwiched between the connecting piece 7 and the piece 8 adjacent to the outer surface of the jetty 6 and both sides thereof;
A connection and fixing device for an ultra-small low-power light bulb in which the leads 5 and 5 are embedded and protected. 2. A rising wall 1c erected on four sides of the mounting plate 1.
2. The connection and fixing device for a microminiature power lamp according to claim 1, wherein a transparent plate 10 is flatly disposed in the inside, and the tip of the connecting piece 7 is pressed in the direction of the lead 5 by a lower surface projection 10A of the transparent plate 10.