JP7149491B2 - sockets and lighting fixtures - Google Patents

Description

The present invention relates to sockets and lighting fixtures.

In Patent Document 1, a conductive wire (lead wire) is inserted from an engagement opening of a holder and connected to a spring contact, while a pin terminal (base pin) of a lamp is inserted into an insertion hole of a socket and connected to the spring contact. Thus, a lighting device is disclosed in which the conductive wire and the pin terminal are electrically connected.

Japanese Patent Application Laid-Open No. 2011-70901

In recent years, there has been an increasing demand for smaller sockets. However, simply reducing the outer diameter of the socket poses a problem that a sufficient insulating distance between the conductive wire and the pin terminal cannot be ensured.

Specifically, in the invention disclosed in Patent Document 1, it is conceivable to shorten the length of the engagement opening in the depth direction so that the engagement opening of the holder does not protrude when the outer diameter of the socket is reduced. However, in this case, the length of the coated portion of the conductive wire inserted into the engagement port is shortened, resulting in poor insulation.

Therefore, it is conceivable to shorten the overall length of the holder while maintaining the length of the engagement opening in the depth direction. However, in this case, since the tip of the conductive wire approaches the pin terminal, a sufficient insulation distance cannot be ensured.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to secure an insulation distance between a conductive wire and a pin terminal while miniaturizing a socket.

The present invention is directed to a socket for detachably attaching a light source unit, and has taken the following solutions.

That is, the first invention includes a conductive member for electrically connecting a pin terminal of the light source unit and a conductive wire, and a terminal portion in which the conductive member is accommodated, and the terminal portion includes the conductive wire. and a pin insertion port into which the pin terminal is inserted from a direction intersecting the conductive wire insertion port. A first space accommodating the tip of the conductive wire and a second space communicating with the pin insertion port and accommodating the tip of the pin terminal are provided, and at least part of the first space is , and overlaps with the second space when viewed from the axial direction of the pin terminal, and an insulating wall is provided between the first space and the second space.

In the first invention, the terminal portion is formed with a conductive wire insertion opening and a pin insertion opening. The pin insertion opening is open in a direction intersecting with the conductive wire insertion opening. A first space and a second space are formed inside the terminal portion. The first space communicates with the conductive wire insertion port, and the second space communicates with the pin terminal. At least part of the first space overlaps the second space when viewed from the axial direction of the pin terminal, and the first space and the second space are separated by an insulating wall.

In this manner, the first space for accommodating the conductive wire and the second space for accommodating the pin terminal are arranged side by side in the axial direction of the pin terminal inside the terminal portion. As a result, even if the outer diameter of the socket in the radial direction is reduced, the conductive wire and the pin terminal only intersect apart from each other in the axial direction of the pin terminal, so that they do not come into contact with each other.

Moreover, since the insulating wall portion is provided between the first space and the second space, a sufficient insulating distance can be secured between the conductive wire and the pin terminal.

According to a second aspect of the present invention, in the first aspect, a flange portion having a central opening formed at a radially central position is provided, and a pair of the terminal portions are provided on the flange portion with the central opening interposed therebetween. A stepped portion recessed in a stepped shape is provided at a radially outer corner portion of the portion.

In the second invention, since the stepped portion is provided at the corner portion on the radially outer side of the terminal portion, for example, when the socket to which the light source unit is attached is rotated inside the device housing, the corner portion of the terminal portion is Interference with the equipment housing can be suppressed. As a result, the rotatable angle range of the socket is increased, and the adjustment range of the light irradiation direction of the light source unit can be widened.

A third invention is a lighting fixture comprising the socket according to the first or second invention, and a light source unit detachably attached to the socket.

In a third invention, a lighting fixture is constructed by detachably attaching a light source unit to the socket according to the first or second invention.

In a fourth aspect based on the third aspect, a fixture housing that houses the light source unit attached to the socket, and a rotary support member that rotatably supports the light source unit inside the fixture housing. I have.

In the fourth invention, the light irradiation direction of the light source unit can be adjusted by housing the light source unit inside the fixture body and rotatably supporting the light source unit inside the fixture housing.

According to the present invention, it is possible to secure an insulation distance between the conductive wire and the pin terminal while miniaturizing the socket.

It is a side view which shows the structure of the lighting fixture which concerns on this embodiment. It is a top view which shows the structure of the socket seen from the terminal part side. FIG. 4 is a plan view showing the configuration of the socket when the cover of the terminal portion is removed; FIG. 3 is a plan view showing the configuration of a socket as seen from the mounting surface side of the light source unit; It is a side view which shows the state which attaches a light source unit to a socket. It is a figure when a lighting fixture is seen from the rotating shaft side of a rotation support arm. FIG. 7 is a view equivalent to FIG. 6 showing a state in which the light source unit is rotated; It is a side cross-sectional view showing an internal configuration of a terminal portion.

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. It should be noted that the following description of preferred embodiments is essentially merely an example, and is not intended to limit the present invention, its applications, or its uses.

As shown in FIG. 1, the lighting fixture 10 is embedded in, for example, the ceiling of a house or the like, and emits light downward. A lighting fixture 10 is attached to the mounting plate 1 . A terminal block 2 is provided on the mounting plate 1 . The lighting fixture 10 includes a fixture housing 11 , a light source unit 12 and a socket 20 .

The instrument housing 11 is composed of a bottomed cylindrical member that is open at the bottom. The fixture housing 11 is a mounting base to which the light source unit 12 is mounted, and also functions as a heat sink for dissipating heat generated by the light source unit 12 . The instrument housing 11 is made of a material with high thermal conductivity, such as aluminum. A plurality of radiating fins (not shown) are provided on the upper part of the equipment housing 11 .

The light source unit 12 has, for example, an LED (Light Emitting Diode) as a light emitting module. The light source unit 12 is supported inside the instrument housing 11 via a rotation support member 15 . The rotary support member 15 has a holding member 16 that holds the light source unit 12 and the socket 20 and a rotary support arm 17 that rotatably supports the holding member 16 . As a result, the light source unit 12 can be rotated to any posture and the light irradiation direction can be adjusted.

The light source unit 12 is composed of a lamp having a GX53 base, for example. The light source unit 12 is detachably attached to the socket 20 . External commercial power is input to the socket 20 via a power cable 18 (see FIG. 2) as a conductive wire. Power input to the socket 20 is supplied to the light source unit 12 .

As shown in FIG. 2 , the socket 20 has a flange portion 21 , a terminal portion 30 and a spacer portion 25 .

The flange portion 21 is composed of a flat member. A central opening 22 is formed at a radially central position of the flange portion 21 . A tubular portion 23 is erected on the peripheral portion of the central opening 22 of the flange portion 21 .

A pair of terminal portions 30 are provided on the surface of the flange portion 21 on which the cylindrical portion 23 stands. The pair of terminal portions 30 are arranged on the left and right in FIG. 2 with the central opening 22 interposed therebetween. The terminal portion 30 has a peripheral wall portion 31 (see FIG. 3) erected from the flange portion 21 and a lid body 32 covering an opening on the standing side of the peripheral wall portion 31 . A storage space is defined inside the terminal portion 30 by the peripheral wall portion 31 and the lid body 32 .

The terminal portion 30 is provided with a tubular cable insertion opening 33 (conductive wire insertion opening) into which the power cable 18 is inserted. The cable insertion openings 33 are opened in the peripheral wall portion 31 on one end side (upper end side in FIG. 2) of the terminal portion 30 in a direction orthogonal to the thickness direction.

As shown in FIG. 3 , the quick-connect terminal 40 (conductive member) and the leaf spring member 45 are housed inside the terminal portion 30 . An elongated pin insertion opening 34 is formed in the surface of the terminal portion 30 on the side of the flange portion 21 . The pin insertion opening 34 communicates with the inside of the terminal portion 30 . The pin terminals 13 of the light source unit 12 are inserted into the pin insertion openings 34 .

The quick-connect terminal 40 has a spring portion 41, a contact portion 42, and a conductive portion 43 (see also FIG. 8). The spring portion 41, the contact portion 42, and the conductive portion 43 of the quick-connect terminal 40 are integrally formed by bending one conductive plate. The spring portion 41 is composed of a locking spring. The power cable 18 is electrically connected to the quick-connect terminal 40 by being sandwiched between the spring portions 41 of the quick-connect terminal 40 .

The conductive portion 43 of the quick-connect terminal 40 on the left side in FIG. 3 extends so as to cover the pin insertion opening 34 . The contact portion 42 of the quick-connect terminal 40 on the left side is arranged at the lower end portion of the pin insertion opening 34 .

The conductive portion 43 of the quick-connect terminal 40 on the right side in FIG. 3 extends to the upper end portion of the pin insertion opening 34 . The contact portion 42 of the quick-connect terminal 40 on the right side is arranged at the upper end portion of the pin insertion opening 34 .

The leaf spring member 45 extends along the longitudinal direction of the pin insertion opening 34 (vertical direction in FIG. 3). The leaf spring member 45 has a bent portion 46 bent to protrude toward the pin insertion opening 34 . The pin terminal 13 is sandwiched between the contact portion 42 of the quick-connect terminal 40 and the bent portion 46 of the leaf spring member 45 .

The spacer portions 25 are arranged at both ends of the pair of terminal portions 30 in the longitudinal direction. The spacer portion 25 is fastened and fixed to the holding member 16 (see FIG. 1) of the rotation support member 15 by fastening screws (not shown).

The power cable 18 is connected to the cable insertion opening 33 of the terminal portion 30 and routed through the gap between the cylindrical portion 23 and the spacer portion 25 . Here, the cable insertion port 33 has a part of the peripheral edge portion facing the spacer portion 25 cut out.

As a result, the power cable 18 can be pulled out from the notch portion of the cable insertion port 33 and routed in the gap between the tubular portion 23 and the spacer portion 25, so that the power cable 18 is forcibly bent. There is no need, and disconnection can be suppressed.

A pair of cable restricting portions 50 are provided between the left and right spacer portions 25 of the flange portion 21 . The cable restricting portion 50 has a standing portion 51 provided on the flange portion 21 and a hook portion 52 folded back at the tip of the standing portion 51 (see FIG. 5). By engaging the power cable 18 with the hook portion 52 , it is possible to restrict the power cable 18 from moving away from the flange portion 21 .

As shown in FIG. 4, the surface of the flange portion 21 to which the light source unit 12 is attached has an elongated pin insertion opening 34 into which the pin terminal 13 is inserted, and an opening into which a release pin (not shown) is inserted. A portion 24 is formed.

Then, the pin terminals 13 of the light source unit 12 are inserted into the pin insertion openings 34, and the light source unit 12 is rotated clockwise in FIG. As a result, the left and right pin terminals 13 can be electrically connected to the contact portions 42 of the left and right quick-connect terminals 40, respectively.

Here, as shown in FIG. 5, the outer peripheral surface of the light source unit 12 is formed with a fitting groove 12a. A fitting claw 21a (see FIG. 4) protruding radially inward is provided in the central opening 22 of the flange portion 21. As shown in FIG. Therefore, when the light source unit 12 is rotated with respect to the socket 20, the fitting claws 21a are fitted into the fitting grooves 12a, preventing the light source unit 12 from falling off in the axial direction. Thereby, the light source unit 12 is attached to the socket 20 .

As shown in FIG. 6 , the light source unit 12 attached to the socket 20 is supported inside the instrument housing 11 via a rotary support member 15 . The light source unit 12 and the socket 20 are held by the holding member 16 of the rotary support member 15 . The holding member 16 is rotatably supported around a rotation shaft 17a of a rotation support arm 17. As shown in FIG.

Here, a stepped portion 30a recessed in a stepped shape is provided at a radially outer corner portion of the terminal portion 30 . Therefore, as shown in FIG. 7, when the light source unit 12 and the socket 20 are rotated inside the instrument housing 11, it is possible to prevent the stepped portion 30a of the terminal portion 30 from interfering with the instrument housing 11. .

As a result, the rotatable angle range of the socket 20 is increased, and the adjustment range of the light irradiation direction of the light source unit 12 can be increased.

As shown in FIG. 8 , a first space 35 and a second space 36 are provided inside the terminal portion 30 . 8 shows the internal structure of the left terminal portion 30 in FIG. The first space 35 communicates with the cable insertion port 33 . The cable insertion opening 33 extends radially outward (to the left in FIG. 8) from the peripheral wall portion 31 of the terminal portion 30 .

The second space 36 communicates with the pin insertion opening 34 . The pin insertion opening 34 opens in a direction intersecting with the cable insertion opening 33 (downward in FIG. 8). The second space 36 is positioned below the first space 35 .

The first space 35 and the second space 36 are partitioned by an insulating wall portion 37 . The insulating wall portion 37 is erected from the periphery of the pin insertion opening 34 , extends horizontally to cover the pin terminal 13 , and then extends upward toward the lid 32 . Between the upper end portion of the insulating wall portion 37 and the lower surface of the lid body 32, a gap is provided through which the conductive portion 43 of the quick-connect terminal 40 passes.

A spring portion 41 of the quick-connect terminal 40 is accommodated in the first space 35 . A contact portion 42 of a quick-connect terminal 40 is accommodated in the second space 36 . The pin terminal 13 moves in the second space 36 as the light source unit 12 rotates and is electrically connected to the contact portion 42 of the quick-connect terminal 40 .

The wires of the power cable 18 are exposed by peeling off the covering at the tip. By inserting the power cable 18 through the cable insertion opening 33 , the wires of the power cable 18 are sandwiched between the spring portions 41 of the quick-connect terminals 40 . As a result, the power cable 18 is electrically connected to the spring portion 41 of the quick-connect terminal 40 .

Here, since the spring portion 41 and the contact portion 42 of the quick-connect terminal 40 are connected by the conductive portion 43 , the power cable 18 and the pin terminal 13 are electrically connected via the quick-connect terminal 40 .

In this way, the first space 35 for accommodating the power cable 18 and the second space 36 for accommodating the pin terminal 13 are arranged in the axial direction of the pin terminal 13 (the vertical direction in FIG. 8) inside the terminal portion 30. I am trying to place it. Accordingly, even if the radial outer diameter of the socket 20 is reduced, the power cable 18 and the pin terminal 13 only intersect apart from each other in the axial direction of the pin terminal 13, so that they do not come into contact with each other. Therefore, the size of the socket 20 can be reduced.

Further, since the insulating wall portion 37 is provided between the first space 35 and the second space 36, a sufficient insulating distance between the power cable 18 and the pin terminal 13 can be ensured.

A release hole 38 is formed in the peripheral wall portion 31 on the left side of the terminal portion 30 in FIG. The release hole 38 is open at a position facing the spring portion 41 of the quick-connect terminal 40 . An opening 24 is formed on the side of the flange portion 21 opposite to the surface on which the terminal portion 30 is provided (lower side in FIG. 8). The opening 24 extends in a direction crossing the release hole 38 and communicates with the release hole 38 .

Here, when removing the power cable 18 from the spring portion 41 of the quick-connect terminal 40 , a release pin (not shown) is inserted from the opening 24 of the flange portion 21 toward the release hole 38 .

Then, the spring portion 41 of the quick-connect terminal 40 is pressed by the distal end portion of the release pin (not shown) to elastically deform the spring portion 41 . As a result, the engagement state between the power cable 18 and the quick-connect terminal 40 is released, and the power cable 18 can be pulled out from the cable insertion opening 33 .

The socket 20 having the quick-connect terminals 40 as shown in this embodiment may be, for example, a holder socket for a COB (Chip on Board) module.

INDUSTRIAL APPLICABILITY As described above, the present invention is extremely useful and industrially effective because it has the highly practical effect of ensuring the insulation distance between the power cable and the pin terminal while miniaturizing the socket. availability is high.

REFERENCE SIGNS LIST 10 lighting fixture 11 fixture housing 12 light source unit 13 pin terminal 15 rotation support member 18 power cable (conductive wire)
20 Socket 21 Flange Part 22 Central Opening 30 Terminal Part 30a Stepped Part 33 Cable Insertion Port (Conductive Wire Insertion Port)
34 Pin insertion port 35 First space 36 Second space 37 Insulating wall portion 40 Quick connection terminal (conductive member)

Claims (4)

A socket for detachably attaching a light source unit,
a conductive member that electrically connects the pin terminal of the light source unit and the conductive wire;
and a terminal portion in which the conductive member is accommodated,
The terminal portion is formed with a conductive wire insertion port into which the conductive wire is inserted and a pin insertion port into which the pin terminal is inserted from a direction intersecting the conductive wire insertion port,
Inside the terminal portion, a first space that communicates with the conductive wire insertion port and stores the tip portion of the conductive wire, and a first space that communicates with the pin insertion port and stores the tip portion of the pin terminal are stored. a second space is provided;
At least part of the first space overlaps the second space when viewed from the axial direction of the pin terminal,
The socket, wherein an insulating wall is provided between the first space and the second space. In claim 1,
A flange portion having a central opening formed at a radially central position,
A pair of the terminal portions are provided on the flange portion across the central opening,
A socket in which a stepped portion recessed in a stepped shape is provided at a radially outer corner portion of the terminal portion. a socket according to claim 1 or 2;
and a light source unit detachably attached to the socket. In claim 3,
a fixture housing that houses the light source unit attached to the socket;
and a rotary support member that rotatably supports the light source unit inside the fixture housing.

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