JPS6341684Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to lighting equipment such as downlights.

Conventional examples, for example, JP-A-55-9352, No. 16
As shown in Figures 1 to 18, a device body 51 having a mounting hole 50 formed therein, and a lamp socket that is fitted into the mounting hole 50 to form a pair of heat dissipation gaps _H1 in the radial direction of the mounting hole 50. 52 and a pair of opposing protrusions 53 in a direction perpendicular to the radial direction of the lamp socket 52, so that the opposing protrusions 53 of the lamp socket 52 are removably engaged with opposing edges of the mounting hole 50. A pair of locking grooves 54, and one of these locking grooves 54 has the lamp socket 5.
2. This is a lighting fixture equipped with a spring 55 that presses the spring 55. Also, a quick connection terminal 5 for connecting a power line 58
6 is provided at the upper end of the lamp socket 52, and the opening direction of the wire insertion hole 57 is aligned with the mounting hole 50 of the appliance body 51.
The wiring space for the power supply wire 58 on the upper end side of the lamp socket 52 is omitted, and the opening direction of the wire insertion hole 57 is shifted in the circumferential direction by 90 degrees from the pressing direction of the spring 55 to insert the wire. The force when inserting the power line 58 into the hole 57 is prevented from acting on the spring 55, thereby preventing the lamp socket 52 from coming off from the mounting hole 50 during connection.

This lighting fixture has the advantage that the lamp socket 52 can be easily attached.

However, as shown in FIG. 17, in this lighting fixture, the power wire 58 is inserted into the wire insertion hole 57 of the quick-connect terminal 56 above the gap _H1 , so the temperature of the power wire 58 increases due to heat flow. There was a problem.

In addition, in order to facilitate attachment and detachment of the lamp socket 52, the groove width of the locking groove 54 is made larger than the thickness of the edge of the mounting hole 50, so that the electric wire insertion hole 57 can be connected to the power source as shown in FIG. There is a drawback that the lamp socket 52 tilts due to the wire insertion force when the wire 58 is inserted in the direction of arrow A, and there is a risk that the lamp socket 52 may come off when the wire insertion force is large.

Note that the locking groove 54 may be formed on the mounting hole 50 side.

Therefore, an object of this invention is to provide a lighting fixture that can reduce the temperature rise of the power supply line and prevent the lamp socket from tilting when the electric wire is inserted.

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 socket mounting hole 6 is formed in the top part 5 of the main body 1, and a V-shaped spring 7 directed toward the center is mounted on the edge 6a of the socket mounting hole 6 as shown in FIG. 4, and a rotation stopper recess 8 is provided on the opposite side. Notched.

The lamp socket 9 consists of a socket body 10 with a thread groove 10a formed inside and a quick-connect terminal 11. The socket body 10 has a wiring space recess 12 formed on the back side as shown in FIG. 3, and is attached to the thread groove 10a. Connecting portions 14a and 15a of the middle spring 14 and contact spring 15 that contact the lamp 13 are inserted into the recessed portion 1.
2 is positioned by ribs 16 and fitting protrusions 17. The socket of the socket body 10 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 semicircular arc-shaped heat radiation hole with reinforcing ribs 19 about half of the circumference. 20 (see FIG. 9). The reason why the heat radiation hole 20 is formed in a semi-circular arc shape is to avoid the influence of the heat of the lamp provided with the quick connection terminal 11 in a portion where the heat radiation hole 20 is not located. Also, the cylindrical portion 18
As shown in FIGS. 1 and 2, on a part of the outer circumferential surface of the instrument body 1, there is a mounting portion 23 which is an opposing protrusion consisting of a locking groove 21 that engages with the edge of the hole 6 of the instrument body 1 and a spring receiving portion 22.
(see Fig. 10) projecting in the radial direction and downward direction,
On the opposite side of the mounting portion 23, as shown in FIGS. 5 and 11, a hook portion 2 is formed of a protrusion 25 that engages with a locking groove 24 on the hole edge and a rotation stopper recess 8, and serves as an engaging protrusion.
It stands out as 6. As shown in Fig. 1, when attaching this lamp socket 9 to the appliance main body 1,
As shown in the figure, press the spring receiver 22 against the spring 7, hook the protrusion 25 into the recess 8, and at the same time
4 is engaged with the edge of the hole and held by the action of the spring 7. In this mounted state, the lamp socket 9 is located at the center of the mounting hole 6, but during the mounting process, the lamp socket 9 is mounted eccentrically with respect to the center. Additionally, there is a gap H for heat radiation between the mounting hole 6 and the surface portion 18a of the cylindrical portion 18 in a direction perpendicular to the opposing direction of the spring 7 and the recess 8 (see FIG. 13).
is formed, and the air heated by the lamp heat inside the appliance body 1 is exhausted to the outside through the gap H. Further, a spring force is applied to the mounting portion 23, and one of the ribs 19 19a is placed close to the spring 7 in order to prevent the cylindrical portion 18 from being bent by the spring 7. In addition, the socket edge of the socket body 10 has a protruding part 10a that hangs down and protrudes downward as shown in FIG. to be able to form. The inner surfaces of the mounting part 23 and the hook part 26 have an inclined surface 27 so that the ball lamp 13' can be attached thereto, or a dowel 29 of a different type of reflector 28 can be attached to the upper surface of the mounting part 23 and the hook part 26. It serves as a guide when hooking it up.

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 quick connection terminal 11 is a rectangular terminal box 33 (Fig. 7).
An opening 34 is formed on the top surface, a communication step 35 is formed on one side of the opening 34, and a mounting hole 36 to be placed on the top surface of the mounting boss 31 is provided protrudingly, and both ends of the terminal box 33 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 is made with the width direction of the strip plate in a vertical position, horizontal pieces 40 and 41 are extended in the same direction from the upper and lower edges of both ends, and the quick-tie spring 42 is fixed by caulking with the caulking part 43 to connect the spring 42 and the lower part. The gap between the side 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 quick-connect terminal 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 36 is placed on the boss 31, and at this time, the protrusion 47 is engaged with the notch 32. do. Then, the mounting screw 49 is passed through the mounting hole 36 through the cover 48 and screwed into the boss 31 to be mounted.

When the quick-connect terminal 11 is positioned in the socket main body 10, the wiring space of the socket main body 10 and the opening 34 of the quick-connect terminal 11 communicate laterally through the step 35, and the connecting portion of the middle spring 14 and the contact spring 15 is connected. 14a, 15a and a pair of terminal plates 39 are connected by a wire (soft 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 and a pair of ribs 52 are formed in the step 35 of the opening 34, and the socket body 10
Partition protrusions 53 are formed on. The cover 48 has a shape that closes the wiring space 12 and the opening 34, 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 central spring 14 and the connection portions 14a, 15a of the contact spring 15 are formed, and mounting holes 57 are formed in portions located on both outer sides of the projection 56. When the cover 48 covers the space 12 and the like and is tightened with the screw 49, the quick-connect terminal 11 connects to the socket body 10 in a sandwich-like manner.
mounted on.

Because of this configuration, this lighting fixture has the following effects. That is, (1) Since the angle θ between the direction of the wire insertion hole 37 of the quick connection terminal 11 and the direction in which the spring 7 acts is θ = 45 degrees, when inserting the power wire A into the wire insertion hole 37, Since the applied force only generates rotational force in the socket body 10, it does not act in the direction of compressing the spring 7, and unlike the conventional example, the lamp socket 9 is not tilted, so there is no risk of the lamp socket 9 coming off. There is no. In addition, quick connection terminal 1
Since the opening direction of the wire insertion hole 37 of No. 1 is set at approximately 45 degrees with respect to the pressing direction of the spring, the quick connection terminal 11 does not overlap with the upper part of the locking groove 24, and the installation work of the lamp socket 9 is hindered. Therefore, the lamp socket 9 can be easily attached to the appliance main body 1.

(2) Since the quick connection terminal 11 is provided on the side of the socket body 10, the height of the socket can be reduced.

(3) Since the opening direction of the wire insertion hole 37 of the quick connection terminal 11 is inclined at approximately 45 degrees with respect to the pressing direction of the spring 7, that is, in a direction in which the spring 7 is less likely to be acted upon,
The wire insertion hole 37 is removed from the position above the gap H, so that the temperature of the power wire A can be prevented from increasing due to heat flow.

A second embodiment of this invention is shown in FIG. That is, in this lighting fixture, the spring receiving portion 22 is located on the wire insertion hole 37' side of the quick connection terminal 11'. For this reason, when attaching the lamp socket 9, it is necessary to hold the socket body 10, and since the end surface where the insertion hole 37' of the quick connection terminal 11' is located is not operated, damage to the connection portion is prevented. Others are 1st
This is similar to the embodiment.

As described above, the downlight of this invention includes a fixture main body having a mounting hole formed therein, a lamp socket that is fitted into the mounting hole to form a pair of heat dissipation gaps in the radial direction of the mounting hole, and A lamp socket is formed on either one of a pair of opposing edges of the mounting hole in a direction perpendicular to the radial direction and a protrusion opposing the opposing edge of the lamp socket, so that the opposing protrusion of the lamp socket can be inserted and removed in the opposite direction. a pair of locking grooves for freely locking the lamp socket; a spring for pressing the lamp socket against one of the locking grooves; and a spring for pressing the lamp socket on one of the locking grooves; Since the quick-connect terminal is provided with a quick connection terminal that is parallel to the plane including the hole and is inclined in a direction in which the spring is not easily pressed by the electric wire insertion force with respect to the pressing direction of the spring, the following effects can be obtained.

That is, the quick connection terminal is provided on the side of the lamp socket, the opening direction of the wire insertion hole is parallel to the plane containing the mounting hole of the device body, and the spring is not easily pressed by the wire insertion force in the direction of pressing the spring. Since the wire insertion hole is slanted in the direction of This has the effect that the lamp socket does not tilt as in the conventional case, and there is no risk of the lamp socket coming off.

[Brief explanation of drawings]

Fig. 1 is a partially omitted sectional view of a lighting fixture to which the first embodiment of this invention is applied, Fig. 2 is a plan view of the lamp socket, Fig. 3 is a plan view with the cover removed, and Fig. 4 5 is a partial front view showing the hook part of the lamp socket. FIG. 6 is a partial perspective view of the rear side of the socket body. FIG. 7 is an exploded perspective view. The figure is a partial sectional view, Figure 9 is a perspective view of the lamp socket, Figure 10 is a partial perspective view showing the mounting part, Figure 11 is a partial perspective view showing the hook part, and Figure 12 is the process of attaching the lamp socket to the appliance body. A perspective view showing the first
Figure 3 is a perspective view showing how the lamp socket is installed.
FIG. 14 is a partial perspective view showing the locked state of the hook part;
FIG. 15 is a plan view of the second embodiment, FIG. 16 is a partially exploded perspective view of the conventional example, FIG. 17 is a partial plan view thereof, and FIG. 18 is a sectional view. 1... Instrument body, 6... Mounting hole, 7... Spring,
9...Lamp socket, 11, 11'...Quick connection terminal, 21, 24...Latching groove, 23...Mounting portion serving as an engaging protrusion, 26...Hooking portion serving as an engaging protrusion, 3
7, 37'...Wire insertion hole, H...Gap.

Claims (1)

[Scope of utility model registration request] a lamp socket that is fitted into the mounting hole to form a pair of heat dissipation gaps in one radial direction of the mounting hole; a pair of locking grooves formed on either one of a pair of opposing edges and a protrusion opposing the opposing edge of the lamp socket, and for locking the opposing protrusion of the lamp socket in the opposing direction so as to be freely insertable and removable; A spring that presses the lamp socket on one of these locking grooves, and a spring that is provided on the side of the lamp socket so that the opening direction of the wire insertion hole is parallel to the plane containing the mounting hole of the appliance body and that the spring presses the lamp socket. A lighting fixture comprising a connecting terminal that is inclined in a direction in which the spring is not easily pressed by an electric wire insertion force.