JPS585324Y2 - lighting equipment - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a lighting device in which a small baseless metal bulb is inserted into a holder.

Conventionally, as a lighting device using a small baseless metal light bulb, as shown in Fig. 1, a light bulb insertion hole is provided in a holder a made of an insulating material such as rubber, and a light bulb insertion hole is provided on both sides of this light bulb insertion hole. There is one in which a pair of terminal insertion holes c and c are provided, and a baseless metal light bulb d is inserted into the light bulb insertion hole, and is used as a light source for various display devices.

This one connects the external conductors e and e of the above light bulb d to the terminal insertion hole c.
, c, and its leading end is attached to the groove f provided on the surface of the bolt 3.

In such a lighting device, wiring board g is connected from the back side of holder a.
Contact terminals.

By inserting h into the terminal insertion holes c, c, the holder a elastically engages the contact terminal h, and an electrical connection is made between the external conductors e and the contact terminal h. It has become so.

By the way, according to the lighting device described above, the terminal insertion holes c, c
When pulling out the contact terminal (h) inserted into the terminal, there is a risk that the external conductors (e, e) in the terminal insertion holes (c, c) may be pulled out at the same time.

Moreover, as shown by the two-dot chain line in FIG. 1, the contact terminal h2. h2
When trying to insert from the front side of holder a, insertion hole c,
The external conductors e and e in c are contact terminals h2. There is a risk that these external conductive wires e and e will be pushed back by the tip of h2 and float to the back side of the holder a, causing a short circuit with each other.

Therefore, the mounting direction of holder a to wiring board g is restricted to only one direction, the direction in which the contact terminal and h are inserted from the back side of the holder, and it is necessary to install this type of lighting device in a narrow space. This was extremely inconvenient in some cases.

This invention was made based on the above circumstances, and its purpose is to provide a terminal insertion hole and an external conductor locking hole in the holder, to allow the external conductor to pass through the terminal insertion hole, and to connect the external conductor with the leading end of the external conductor. By inserting and locking into the locking hole, the external conductor can be pulled out and loosened when inserting or removing the contact terminal, and the contact terminal can be inserted from either the front or back side of the holder. The aim is to provide a possible lighting device.

An embodiment of this invention will be described below with reference to FIGS. 2 and 3.

In the figure, 1 is a lighting device, 2 is a small baseless metal light bulb, and 3 is a holder.

This holder 3 is integrally molded from an elastic insulating material such as rubber, and has a cylindrical light bulb holder 4 provided at its center.

A light bulb insertion hole 5 is formed in the light bulb holding part 4,
The baseless metal bulb 2 is resiliently engaged and held within this insertion hole 5.

In addition, conducting wire lead-out holes 7, 7 are provided penetrating through the bottom wall 6 of the insertion hole 5, and first terminal insertion holes 8, 8 are provided near both ends of the bolt 30. Second terminal insertion holes 9, 9, which also serve as external conductor locking holes, are provided between the first terminal insertion holes 8, 8 and the light bulb holder 4.

On the back side of the holder 3, a back side communication groove 10.10 is formed to communicate the back side opening of each terminal insertion hole 8, 9 with the opening of the conductor lead-out hole 7.
Surface-side communication grooves 11, 11 are formed on the surface side of the terminal insertion holes 8, 90 to communicate with each other.

The external conductor 13.13 led out from the bulb end of the baseless bulb 2 is led out to the back side of the holder 3 through the lead-out hole 7. installed and introduced into the first terminal insertion holes 8, 8,
After being led out from the surface side of the holder 30, the leading-out portion is attached to the surface-side communication groove 11.11, and the tip end thereof is introduced into the second terminal insertion hole 9, 9 and locked. ing.

Further, 20 is a wiring board such as a printed circuit board, and this wiring board 20 is installed in a device (not shown).

Contact terminals 21 and 21 are provided protruding from the wiring board 20 at the same spacing 1 between the first terminal insertion holes 8, 8.

Thus, in the lighting device 1 having the above configuration, when the contact terminals 21, 21 with the interval 11 are inserted into the first terminal insertion holes 8, 8 from the back side of the holder 3, the contact terminals 21, 21 are inserted into these terminal insertion holes. The holder 3 is elastically engaged and held by the wiring board 20 by the external conductors 13 and 1.
3 and the contact terminals 21.21 are electrically connected.

Therefore, the external conductor 13 inside the terminal insertion holes 8, 8
゜130 introduction direction is the insertion direction A of the contact terminal 21.21
, so the external conductor wires 13. in the insertion holes 8, 8.
The contact terminals 21 and 21 can be inserted without 13 being pushed back.

Furthermore, when the contact terminals 21, 21 are pulled out, the tips of each external conductor 13 are caught in the second terminal insertion hole 9 and the surface side communication groove 11, so that the external conductors 13, 13 are prevented from being pulled out. Ru.

On the other hand, in order to insert the contact terminal from the surface side of the holder 30, as shown by the two-dot chain line in FIG. That's fine.

In this case as well, since the insertion direction B of the contact terminals 21.210 coincides with the direction of introduction of the external conductors 13, 13 into the terminal insertion holes 9, 9, the external conductors 13.13 are pushed back when the contact terminals 21.21 are inserted. There will be no problems such as loosening or loosening.

Also, when pulling out the contact terminals 21, 21 from the insertion holes 9, 9, the base end of the external conductor 130 is inserted into the back side communication groove 10.
．． 10, especially at the angles 10a and 10a thereof, the tip of the external conductor 13 is prevented from being pulled out.

In addition, when inserting the contact terminals 21.21 from the surface side of the holder 30 as in this case, a light bulb insertion hole 22 is provided in the wiring board 20 so that the head of the light bulb 2 can protrude from this light bulb insertion hole 22. It is something to keep.

According to the above embodiment, by providing the second terminal insertion holes 9, 9 which also serve as external conductor locking holes, the contact terminals 21, 21 can be inserted from either the front or back of the holder 30. Since the external conducting wires 13 and 13 are not pulled out or loosened, the direction in which the lighting device 1 is attached can be selected depending on the mounting position of the wiring board 20 within the fixture.

Therefore, it is particularly effective when it is necessary to install these lighting devices within a narrow space.

Furthermore, even when the contact terminals 21, 21 are pulled out, the external conductive wires 13, 13 are not pulled out or loosened.

Note that FIG. 4 shows a modification of this invention, in which the first terminal insertion holes 8, 8 are located on the side of the light bulb holder 4, and the second terminal insertion hole 9 also serves as an external conductor locking hole. 9 are located on both ends of the holder 30.

The external conductive wire 13 is passed through the first terminal insertion holes 8, 8, and then its leading end is inserted into the second terminal insertion hole 9°9.
Introduced and locked.

The structure of the holder 3 of this modification is the same as that of the embodiment shown in FIG. 2, except that the order in which the external conductors 13, 13 are introduced is changed.

However, by doing this, the contact terminals 21.21 with a spacing of 11.degree. shown in the above embodiment can be inserted from the front side of the holder 3, and the contact terminals 21.21 with a spacing of 12.mu.m can be inserted from the back side of the holder 3. This makes it possible to improve the compatibility of this type of lighting device 1.

Note that, as shown in these embodiments, the contact terminal 21.
Although it is desirable that the insertion direction of 21 coincides with the introduction direction of the external conductive wires 13 and 13, it is not necessarily limited to this direction.

That is, for example, in FIG. 2, the contact terminals 21.degree. 21 with a spacing of 11.degree. may be inserted into the first terminal insertion holes 8, 8 from the direction B. In this case, the tip of each external conductor 13 is connected to the second terminal. It is caught in the insertion hole 9 and the surface-side communication groove 11, and the external conductor wires 13 and 13 are prevented from being pulled out.

That is, even when the contact terminals 21, 21 are inserted from the direction opposite to the direction in which the external conductors 13, 13 are introduced, the intended purpose of this invention can be achieved.

Further, in these embodiments, the second terminal insertion holes 9, 9 also serve as external conductor locking holes, but the invention is not limited to this. It may also have only the function of locking the tip of the external conductor.

As described in detail above, this invention provides a terminal insertion hole and an external conductor locking hole in a holder that holds a baseless light bulb, allows the external conductor to pass through the terminal insertion hole, and locks the external conductor with its leading end. By inserting and locking into the hole, the external conductor can be removed and loosened when inserting and removing the contact terminal, and the contact terminal can be inserted from either the front or back of the holder, making it less narrow. This type of lighting device can be easily installed into a fixture.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a conventional lighting device, Figs. 2 and 3 show an embodiment of this invention, Fig. 2 is a sectional view, Fig. 3 is a perspective view, and Fig. 4 is a sectional view of this invention. It is a sectional view corresponding to FIG. 2, showing a modification. 1... Lighting device, 2... Plain metal bulb,
3...Holder, 5...Light bulb insertion hole, 8
...First terminal insertion hole, 9...Second terminal insertion hole (external conductor locking hole), 13...External conductor.

Claims (2)

[Scope of utility model registration request] (1) A holder made of insulating material is provided with a light bulb insertion hole, a terminal insertion hole, and an external conductor locking hole, and the external conductor of the baseless metal bulb inserted into the light bulb insertion hole is passed through the terminal insertion hole. A lighting device characterized in that the leading end portion of the leading-out portion is introduced into and locked in the external conductor locking hole. (2) The lighting device according to claim 1, wherein the external conductor locking hole also serves as a second terminal insertion hole.