JPH0740253Y2 - lighting equipment - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a lighting fixture, and particularly to a so-called receipt lamp.

[Prior Art] Conventionally, as shown in FIG. 7 and FIG. 8, a lighting device called a so-called Resep lamp in which a socket 3 is directly attached to a mounting surface 1 such as a ceiling so as to make the existence of a lamp 4 stand out is known. Are known.

Generally, as shown in FIG. 8, in this lighting fixture, a socket 3 is attached to the lower part of the gutter-shaped bottom surface of a socket base 6 made of a steel plate bent into a gutter with a collar, and a terminal block 7 is installed inside the gutter-shape. The power supply wire 5 is used as a connection space for the power supply wire 5, and the power supply wire 5 drawn out from the power supply wire insertion hole 8 formed in the mounting surface 1 is connected to the terminal block 7, and then the socket base 6 is fixed to the mounting surface 1 with two wood screws 9. Then, the cover 10 is fitted onto the socket 3 and fixed by the cover mounting spring 11.

[Problems to be solved by the device]

However, in the above-described lighting equipment, the height of the cover 10 is determined by the height from the mounting surface 1 to the socket opening end, but not only as the height of the socket 3 itself but also as a connection space for the power supply wire 5. The height of the socket base 6 is required, and as a result, the cover 10 becomes large and conspicuous.

Further, since the socket base 6 is provided separately from the socket 3, the socket base 6 and the cover 10 must be mounted separately.

The present invention has been made in view of the above background, and an object of the present invention is to provide a lighting fixture capable of reducing the size of the lighting fixture and improving the installation workability.

[Means for Solving the Problems]

The lighting device according to the present invention has a substantially cylindrical shape, and an outer collar is formed in the vicinity of the lamp mounting opening of the socket for mounting the lamp from the lamp mounting opening at one end, and a terminal portion for connecting the power supply wire to the other end of the socket. And a blade-like locking projection protruding from the side surface is formed on the side surface of the socket between the other end provided with the terminal portion and the outer collar with a substantially constant inclination with respect to the central axis of the socket. The socket is screwed into the embedding hole formed in the mounting surface, and the locking projection is engaged with the peripheral surface of the embedding hole so as to be engaged.

[Action]

According to the present invention, the side surface of the socket is formed with the blade-like locking projection which is inclined to the center axis of the socket and protrudes from the side surface. When the socket is screwed in, the locking protrusion bites into and engages with the peripheral surface of the embedding hole for easy socket installation and good workability. It can be made small.

〔Example〕

1 to 4 show one embodiment of the present invention, which will be described below with reference to the drawings.

As shown in FIGS. 1 and 4, this lighting device includes a socket 3 which is embedded and mounted in an embedding hole 2 formed in a mounting surface 1 such as a ceiling, and a lamp such as an incandescent lamp which is mounted on the socket 3. 4 and.

The socket 3 has a substantially cylindrical plastic outer shell that is open at the lower end, and has a lamp mounting opening 31 for mounting the lamp 4.
Around the circumference of, there is an outer collar 32 whose lower surface is inclined toward the mounting surface and whose upper surface is a flat surface and comes into contact with the mounting surface 1, into which the lamp 4 is screwed and contacts the cap 41, and the central contact 33 A piece 34 is arranged. In the vicinity of the upper end of the socket 3, a terminal portion 35 for connecting the power supply wire 5 such as VVF is integrally provided. Terminal part
35 has two pairs of electric wire insertion holes 36 in the upper end surface of the socket 3, one pair for connecting the power supply electric wire 5 and the other pair for feeding, and the receiving wire is received in each of the electric wire insertion holes 36. A quick-connect terminal 37 connected to 33 and the central contact piece 34 is installed.

The side surface of the socket 3 above the outer flange 32 is formed into a blade shape projecting from the side surface with a substantially constant inclination with respect to the central axis of the socket 3 and is formed on the peripheral surface of the embedding hole 2 of the mounting surface 1. An engaging protrusion 38 that bites is formed. The locking protrusion 38 is formed so as to be inclined in a so-called right-handed thread so that the socket 3 can be mounted on the mounting surface 2 by screwing the socket 3 clockwise into the embedding hole 2. Further, the tip of the locking projection 38 on the upper end side of the socket 3 is formed so as to gradually project from the side surface of the socket 3 toward the lower end of the socket 3, and the socket 3 is screwed into the embedding hole 2 of the mounting surface 1. It is easy to screw in.

When this lighting fixture is embedded and mounted in the embedding hole 2 of the mounting surface 1, first, the power supply wire 5 is pulled out from the embedding hole 2 and connected to the terminal portion 35 of the socket 3. Next, the power supply wire 5 is pushed back into the embedding hole 2, the upper end of the socket 3 is inserted into the embedding hole 2, and when the locking protrusion 38 comes into contact with the mounting surface 1, the socket 3 is rotated clockwise, and Stop projection 38 with embedded hole 2
The socket 3 is attached to the attachment surface 1 by screwing into the peripheral surface of the.

At this time, the diameter of the embedding hole 2 is set to be larger than the outer diameter of the cylindrical portion of the socket 3 and smaller than the maximum diameter of the locking projection 38.

In this luminaire, since the locking projection 38 is formed on the side surface of the socket 3 so as to be substantially inclined with respect to the central axis of the socket 3 and project from the side surface, the embedding hole 2 formed in the mounting surface 1 If the socket 3 is screwed in, the locking protrusion 38 engages with the peripheral surface of the embedding hole 2 so that the socket 3 can be easily mounted and the workability is good, and the margin of the socket 3 from the mounting surface 1 is small. The external appearance of the lighting fixture can be made small, and the outer collar 32 covers the embedding hole 2, so that the external appearance in a mounted state is good.

The locking protrusion 38 of the socket 3 may be formed in a screw shape, or may be separately formed of metal such as stainless steel to be mounted on the socket 3 to further improve workability when mounting the socket 3. Good.

Further, as shown in FIG. 5 and FIG. 6, an opening 39 is formed by notching the outer shell of the socket 3 around the locking projection 38 formed integrally with the plastic outer shell of the socket 3 to provide the locking projection. By connecting 38 to the socket 3 only at its end, the locking projection 38 can be made to have elasticity and the mounting work can be further improved.

[Effect of device]

Since the present invention is configured as described above, when the socket is screwed into the embedding hole formed in the mounting surface, the locking protrusion bites into and engages with the peripheral surface of the embedding hole to easily mount the socket. It has advantages such as good workability, a small amount of protrusion of the socket from the mounting surface, a small external appearance of the luminaire, and a good appearance in the mounted state with the outer collar covering the embedded hole.

[Brief description of drawings]

1 to 4 show an embodiment of the present invention, wherein FIG. 1 is a perspective view, FIG. 2 is a front view, FIG. 3 is a plan view, and FIG. 4 is a sectional front view in a mounted state. Is. 5 and 6 show another embodiment of the present invention. FIG. 5 is a perspective view and FIG. 6 is a cross-sectional view of essential parts. 7 and 8
FIG. 7 shows a conventional example of the present invention. FIG. 7 is a perspective view and FIG. 8 is a front view. 1 ... Mounting surface, 2 ... Embedding hole, 3 ... Socket, 31 ... Lamp mounting port, 32 ... Outer collar, 33 ... Receiving, 34 ... Center contact piece, 35 ... Terminal part, 36 ... Wire insertion hole, 37 ... Quick-connect terminal, 38 ... Locking protrusion, 39
… Aperture, 4… Lamp, 5… Power wire.

Claims (1)

[Scope of utility model registration request] 1. An outer flange is formed in the vicinity of the lamp mounting opening of a socket for mounting the lamp from a lamp mounting opening at one end, and a terminal portion for connecting a power supply wire is provided near the other end of the socket. A mounting surface formed on the side surface of the socket between the other end provided with the terminal portion and the outer collar with a blade-shaped locking projection protruding from the side surface with a substantially constant inclination with respect to the central axis of the socket A lighting fixture, characterized in that a socket is screwed into an embedding hole formed in, and the locking projection is engaged with the peripheral surface of the embedding hole so as to be engaged.