JPS6331499Y2 - - Google Patents

Description

[Detailed explanation of the idea] This idea relates to downlights.

Conventionally, downlights with a lamp socket, such as those disclosed in Japanese Patent Publication No. 55-6995, have a terminal section on the side of the socket body, so the height of the lamp socket can be lowered and the height of the appliance can be reduced. Since the device body is closed when it is installed in the mounting hole of the device body, the heat dissipation of the device body becomes poor.

For this reason, conventionally, as in Japanese Patent Application Laid-Open No. 123672/1983, heat radiation holes for radiating heat from the device body have been formed in the socket body.

However, there was a drawback that the heat dissipation performance was determined to a fixed value by the position and size of the heat dissipation hole.

Therefore, the purpose of this invention is to provide a downlight that allows the heat dissipation of the device body to be set arbitrarily.

A first embodiment of this invention is shown in FIGS. 1 to 8. That is, the appliance main body 1 is fitted into an embedded hole 3 in a ceiling 2 and is attached using a fixture 4.
A mounting hole 6 is formed in the top part 5 of the instrument body 1, and a fourth
A V-shaped spring 7 is attached to the hole edge toward the center as shown in the figure.
is attached, and a rotation stopper recess 8 is cut out in the opposing hole edge.

The lamp socket 9 consists of a socket body 10 with a thread groove 10a formed inside and a terminal portion 11 which is a quick connection terminal, and the socket body 10 has a recess 12 for wiring space formed on the back side as shown in FIG. and a connecting portion 14 between the middle spring 14 and the contact spring 15 that contacts the lamp 13 attached to the thread groove 10a.
a, 15a are positioned in the recess 12 by ribs 16 and fitting protrusions 17. Socket body 10
The socket has a large-diameter cylindrical part 18 for mounting, and the connecting part between the cylindrical part 18 and the socket body 10 has a reinforcing rib 1.
9, a semicircular arc-shaped heat radiation hole 20 of approximately half the circumferential direction.
, and on a part of the outer surface of the cylindrical portion
As shown in the figures and FIG. As shown in FIG. 5, a hook portion 26 is formed on the side and includes a protrusion 25 that engages with the hole edge locking groove 24 and the rotation stopper recess 8. As shown in FIG. 1, when attaching this lamp socket 9 to the appliance main body 1, press the spring receiver 22 against the spring 7 as shown in FIG. The locking grooves 21 and 24 are engaged with the hole edge, and the spring 7
It is held by the action of In this mounting state, the center of the lamp socket 9 is mounted eccentrically with respect to the center of the mounting hole 6, and since the mounting portion 23 protrudes, it faces the hole edge 6a (Fig. 4) around the mounting portion 23. A heat dissipation gap H is formed between the cylindrical portion 18 and the surface portion 18a. Since a spring force is applied to the mounting portion 23, one of the ribs 19 19a
The cylindrical portion 18 is reinforced closer to the direction in which the spring force is applied. The edge of the socket opening of the socket body 10 with respect to the base 18b of the cylindrical portion 18 has a protrusion 10b that hangs downward as shown in FIG. ). Attachment part 23 and hook part 26
The inner surface of the lamp has an inclined surface 27 so that a ball lamp 13' can be attached thereto as shown in FIG.
Alternatively, attach the dowel 29 of a different type of reflector 28 to the mounting part 2.
3 and the upper surface of the hook part 26 to serve as a guide when hooking it.

A pair of extension plates 30 protrude on the outer side of the socket body 10 in a direction in which the heat dissipation hole 20 is not located, more precisely, in a tangential direction that coincides with a direction at 45 degrees to a direction including the mounting part 23 and the hook part 26. (Figure 3),
A pair of terminal mounting bosses 31 are provided inside the extension plate 30 at a distance from the outer surface of the socket body 10, and the upper corner edge of the extension plate 30 forms a notch 32 consisting of a vertical surface and an inclined surface. ing.

The terminal portion 11 is a rectangular terminal box 33 (Fig. 7).
An opening 34 is formed on the top surface of the terminal box 34, a communication step 35 is formed on one side of the opening 34, and a mounting hole 36 is provided to protrude from the top surface of the terminal mounting boss 31. An electric wire insertion hole 37 is formed on the upper side, and a release hole 38 is formed on the lower side. The terminal plate 39 has a strip-shaped plate in a vertical position in the width direction, has horizontal pieces 40 and 41 extending in the circumferential direction on the upper and lower edges of both ends, and fastens the quick-tie screw 42 by caulking and fixing it with the caulking part 43. The gap between the lower horizontal piece 41 and the lower horizontal piece 41 is made to face the wire insertion hole 37. Further, a support piece 44 is provided vertically from the center portion, and a cut portion 45 is formed in the support piece 44. The inside of the terminal box 33 has a partition 46 in the center, and support piece support grooves (not shown) are formed on both sides of the partition 46. Further, a protrusion 47 that contacts the notch 32 of the extension plate 30 is formed on the side plate. To attach the terminal section 11, the outer surface of the terminal box 33 is brought into contact with the side end of the extension plate 30, and the attachment hole section 36 is placed on the terminal attachment boss 31. At this time, the protrusion 47 is engaged with the notch section 32. match.
Then, the mounting screw 49 is passed through the mounting hole 36 through the cover 48 and is screwed into the terminal mounting boss 31 to be mounted.

When the terminal portion 11 is positioned in the socket body 10, the recess 12 of the socket body 10 and the opening 34 of the terminal portion 11 communicate with each other laterally through the communication step 35, and the connecting portion of the middle spring 14 and the contact spring 15 14a, 15a and a pair of terminal plates 39 are connected by an annealed copper wire 50. At this time, the connecting portions 14a and 15a are soldered, and the terminal plate 39 is caulked by inserting the wire 50 into the cut and bent portion 45.
In order to ensure the insulation distance between the pair of wires 50, a wire recess 51 is provided in the communication step 35 of the opening 34.
and a pair of ribs 52, and a partition protrusion 53 is formed on the socket body 10. cover 4
8 has a shape that closes the recess 12 and the opening 34, and has a protrusion 54 separating the pair of terminal plates 39 on the back side thereof, a recess 55 that escapes the pair of ribs 52, and further has a shape that closes the inner spring 14 and the opening 34. A presser protrusion 56 is formed to press the connecting portions 14a, 15a of the contact spring 15, and mounting holes 57 are formed in portions located on both outer sides of the presser protrusion 56. This cover 4
When the concave portion 12 and the like are covered with the screw 8 and tightened with the screw 49, the terminal portion 11 is attached to the socket body 10 in a sandwich-like configuration.

With this structure, this downlight has the following effects. That is, (1) Since the terminal portion 11 is provided on the side of the socket body 10, the height of the lamp can be reduced.

(2) Since the terminal section 11 is provided on the opposite side of the heat dissipation hole 20 of the socket body 10, it is possible to reduce the temperature rise of the terminal section 11 while reducing the temperature of the lamp cap, thereby suppressing the temperature rise at the branch point of the power line. reliability can be improved.

(3) By providing the mounting spring 7 on the terminal portion 11 and the reflective side, visual confirmation when mounting the socket becomes easier.

(4) By attaching the socket body 10 to the attachment hole 6 of the top portion 5 of the appliance body 1, a gap H for heat radiation is formed in a part of the attachment hole 6, and the terminal portion 11 is not located above the gap H. Therefore, the terminal portion 11 is not heated, and the heat dissipation of the device body 1 can be easily set.

A second embodiment of this invention is shown in FIG. As is clear from a comparison with FIG. 3 in the first embodiment, one of the ribs 19'a installed in the heat radiation hole 20 is positioned in the direction in which the spring 7 acts. Thereby, it is possible to eliminate the possibility that the attachment part 23 is damaged due to the presence of the heat radiation hole 20 due to the force resisting the spring 7 applied when the attachment part 23 is attached.

The third embodiment of this invention is shown in FIGS. 10 and 1.
Shown in Figure 1. This is done by making the mounting hole 6' in the top 5' of the appliance body 1' a long hole, and attaching the lamp socket 9 to a part of the mounting hole 6' with a screw 61 to form a gap 60. It is arranged above where it is not located. Its operation and effect are similar to those of the first embodiment.

As described above, the downlight of this invention is installed in a part of the mounting hole so as to form a gap for heat radiation between the fixture body having the mounting hole at the top and the edge of the mounting hole. In addition, since the lamp socket is provided with a terminal part provided on the side at a position not located in the gap, it is possible to reduce the temperature rise of the terminal part, and it is possible to arbitrarily set the heat dissipation performance of the appliance body.

[Brief explanation of the drawing]

Fig. 1 is a partially omitted sectional view of the first embodiment of this invention, Fig. 2 is a plan view of the lamp socket, Fig. 3 is a plan view with the cover removed, and Fig. 4 shows the socket mounting part. 5 is a partial front view showing the hook part of the socket, FIG. 6 is a partial perspective view of the rear side of the socket main body, FIG. 7 is an exploded perspective view, and FIG. 8 is a partial sectional view. , FIG. 9 is a plan view of the second embodiment, FIG. 10 is a plan view of the third embodiment, and FIG. 11 is a sectional view thereof. 1, 1'...equipment body, 5, 5'...top, 6,
6'...Mounting hole, 9...Lamp socket, 11...
...Terminal section, 60,H...Gap.

Claims (1)

[Scope of utility model registration request] The device is attached to a part of the mounting hole so as to form a gap for heat radiation between the device main body having a mounting hole in the top and the edge of the mounting hole, and is positioned at a side where the gap is not located. A downlight that includes a lamp socket with a terminal section.