JP5534211B2 - Socket and lighting device - Google Patents

Description

  Embodiments described herein relate generally to a socket for connecting a straight tube lamp in which a pair of lamp pins each having a quadrangular cross section project at one end, and a lighting device using the socket.

  In general, a straight tube fluorescent lamp having G13 type caps at both ends from which a pair of lamp pins having a circular cross section project, and a lighting device using a straight tube fluorescent lamp socket for connecting the straight tube fluorescent lamp are often used. ing.

  Such straight tube fluorescent lamp sockets include a rotary mounting type. In this straight tube fluorescent lamp socket, an opening is provided in the front surface of the socket body and an insertion groove is provided which communicates from the front end surface to the opening in the front surface, and a pair of power supply terminals are disposed in the socket body. Then, a pair of lamp pins of the straight tube lamp is inserted into the insertion position in the opening through the insertion groove, and is rotated approximately 90 ° from the insertion position to the connection position in the opening, so that a part of the outer peripheral surface of each lamp pin is It is connected to each power supply terminal, and power can be supplied to each lamp pin from each power supply terminal.

  In addition, a straight tube lamp using a low power consumption and long-life LED element has been proposed as a light source that can be used in an existing lighting device instead of a straight tube fluorescent lamp.

  This straight tube lamp has the same tube length as that of the straight tube fluorescent lamp, and is provided with a G13-type base in which a pair of base pins having the same circular section as the straight tube fluorescent lamp protrudes at both ends. Similar to the tube fluorescent lamp, it can be mounted between a pair of sockets provided in an existing lighting fixture.

  However, since the straight tube lamp uses a G13 type base that is compatible with the straight tube fluorescent lamp, the straight tube lamp is mistakenly attached to an illumination device equipped with a lighting circuit for the straight tube fluorescent lamp. There is a risk that the straight tube fluorescent lamp may be mounted or the straight tube fluorescent lamp may be erroneously mounted on a lighting device equipped with a lighting circuit for a straight tube lamp.

JP 2003-100402 A Utility Model Registration No. 3152509

  In order to prevent erroneous mounting of the straight tube lamp, for example, it is conceivable to make the lamp pin of the straight tube lamp have a quadrangular cross section and to eliminate compatibility with the G13 base.

  In such a socket for connecting a lamp pin having a square cross section, the outer surface of the lamp pin with which the power supply terminal comes into contact is a flat surface. Therefore, the power supply terminal may be brought into surface contact with the plane of the lamp pin. Depending on the deformation of the power supply terminal due to contact with the lamp pin, the lamp pin and the power supply terminal may be in one-point contact. If the lamp pin and the power supply terminal are in one-point contact, if a contact failure occurs there, power supply from the power supply terminal to the lamp socket becomes unstable, and the astigmatic phenomenon of the straight tube lamp occurs.

  This invention is made in view of such a point, and it aims at providing the socket which can ensure the electrical connection of the electric power feeding terminal with respect to a square-shaped lamp pin, and an illuminating device using this socket.

  The socket according to the embodiment includes a socket body provided with an opening on the front surface and an insertion groove that communicates from a front end surface intersecting the front surface to the opening on the front surface. A pair of square-shaped lamp pins protruding from one end of the straight tube lamp are inserted into the socket body through the insertion groove and inserted into the insertion position in the opening, and rotated from the insertion position to the connection position in the opening. . A pair of power supply terminals are arranged in the socket body. The pair of power supply terminals are in contact with the two corners on the outside of each lamp pin rotated to the connection position.

  According to the present invention, since the pair of power supply terminals are in contact with the two corners of each of the pair of lamp pins having a quadrangular cross section, the electrical connection between the power supply terminals and the lamp pins is ensured, and the power supply terminals are connected to the lamp pins. It can be expected that power can be reliably supplied.

It is sectional drawing of the socket which shows one Embodiment. It is sectional drawing of a socket same as the above. It is a perspective view of a part of the socket and the straight tube type lamp. It is a perspective view of the decomposition | disassembly state of a socket same as the above. It is a perspective view of the straight tube | pipe type lamp connected to a socket same as the above. It is a side view of the illuminating device using a socket same as the above. It is a perspective view of an illuminating device same as the above.

  Hereinafter, an embodiment will be described with reference to the drawings.

  As shown in FIG. 7, the lighting device 11 includes a lighting fixture 12 that is an embedded lighting fixture of the type for two straight tube fluorescent lamps, and two straight tube lamps 13 used in the lighting fixture 12. I have.

  The luminaire 12 is an elongated lower fixture body 15 that is embedded in the ceiling surface, and is opposed to both ends of the fixture body 15 in the longitudinal direction. Two sets of sockets 16 and 17 (socket 17 is shown in FIG. 6), and a lighting device 18 which is disposed on the instrument body 15 and is a dedicated power source for lighting the straight tube lamp 13. A socket 16 on one end side where one end side of the straight tube lamp 13 is mounted is for power supply, and a socket 17 on the other end side where the other end side of the straight tube lamp 13 is mounted is for grounding.

  As shown in FIG. 5, the straight tube lamp 13 includes a translucent cover 21 having a tube length and a tube diameter similar to those of a straight tube fluorescent lamp and formed in substantially the same appearance as the straight tube fluorescent lamp. The light source unit 22 accommodated in the transparent cover 21 and the caps 23 and 24 provided at both ends of the translucent cover 21 are provided. The base 23 on one end of the straight tube lamp 13 is for power supply mounted on the power supply socket 16, and the base 24 on the other end of the straight tube lamp 13 is for grounding mounted on the socket 17 for grounding. It is.

  The light source unit 22 includes a plurality of substrates 26 on which a plurality of semiconductor light emitting elements 25 such as LED elements and EL elements are mounted, and a mounting plate 27 to which these substrates 26 are attached. In the case of an LED element, the semiconductor light emitting element 25 uses an SMD (Surface Mount Device) package with a connection terminal on which an LED chip is mounted. In this SMD package, for example, an LED chip that emits blue light is arranged in the package, and this LED chip is mixed with a yellow phosphor that emits yellow light by being excited by a part of the blue light from the LED chip. Sealed with a phosphor layer such as silicone resin. Therefore, the surface of the phosphor layer becomes a light emitting surface, and white light is emitted from this light emitting surface.

  As shown in FIG. 3, a protrusion 28 protruding in the radial direction is formed on the end face of the power supply cap 23, and the power supply is electrically connected to the light source unit 22 from the protrusion 28. A pair of lamp pins 29 is projected. These lamp pins 29 are formed of a flat plate having a rectangular cross section, and are connected to a connecting portion 29a protruding along the longitudinal direction of the straight tube lamp 13, and from the tip of the connecting portion 29a toward the opposite outer diameter direction. It is bent and formed into a substantially L shape having a hooking portion 29b that protrudes. The plate thickness of the lamp pin 29 is 1 mm, the distance between the centers of the connection portions 29a of the pair of lamp pins 29 is 16 mm, and the distance between the connection portions 29a of the pair of lamp pins 29 is 15 mm. In contrast, the G13 type base has a pair of lamp pins with a diameter of 2.29 to 2.67 mm, a distance between the centers of the pair of lamp pins of 12.7 mm, and a distance between the outside of the pair of lamp pins of 15.17 mm. Accordingly, the pair of lamp pins 29 of the power supply base 23 are different in shape from the pair of lamp pins of the G13 type base, and are wider than the pair of lamp pins of the G13 type base, and are compatible with the G13 type base. There is no sex.

  As shown in FIG. 6, one ground pin 30 protrudes from the center of the tube axis of the straight tube lamp 13 on the end face of the grounding cap 24. The ground pin 30 includes a cylindrical shaft portion 30a and an elliptical connection portion 30b protruding around the tip of the shaft portion 30a. The longitudinal direction of the ellipse of the connecting portion 30b corresponds to the direction in which the pair of lamp pins 29 of the power supply cap 23 are arranged.

  The positional relationship between the pair of lamp pins 29 and the light emitting surface of the semiconductor light emitting element 25 of the light source unit 22 is such that light is emitted in a predetermined irradiation direction with the straight tube lamp 13 correctly mounted between the sockets 16 and 17. It is set so that it can be irradiated.

  As shown in FIG. 6, the sockets 16 and 17 are rotationally mounted by inserting the lamp pin 29 and the ground pin 30 from the front end surfaces of the sockets 16 and 17 and rotating them around the tube axis of the straight tube lamp 13. The formula is used.

  Next, FIGS. 1 to 4 show a power supply socket 16. The socket 16 includes a socket body 41, a rotor 42 disposed in the socket body 41, and a pair of power supply terminals 43. Hereinafter, with respect to the socket 16, the side attached to the instrument body 15 is referred to as the base end, and the opposite side is referred to as the front end, the surface facing the end surface of the straight tube lamp 13 is the front surface, the opposite side is the back surface, and the front surface. The space between the back surface is called the outer surface.

  The socket body 41 is made of an insulating synthetic resin, and includes a case 46 whose back surface is opened and a cover 47 that is attached to the back surface of the case 46.

  A mounting portion 48 that is attached to the instrument main body 15 is provided at the base end of the case 46, a circular opening 49 is formed on the front surface of the case 46, and an opening is formed on the distal end surface that is the tip of the outer surface of the case 46. An insertion groove 50 communicating with 49 is formed. In the case 46, a pair of power supply terminal holding portions 51 for holding the base end sides of the pair of power supply terminals 43 are formed, and a power supply terminal holding portion 52 for holding the distal ends of the pair of power supply terminals 43 is formed. Has been. An electric wire insertion hole 53 communicating with each power supply terminal holding portion 51 is formed at the base end of the case 46.

  The front surface of the cover 47 is formed with a plurality of locking portions 54 that are locked to the case 46 with the back surface of the case 46 closed, and a plurality of holding portions that position and hold the power supply terminals 43 with the case 46. A protrusion 55 is provided. Further, on the front surface of the cover 47, a pair of support portions 56, which are positioned concentrically with the opening 49 of the case 46 and rotatably support the rotor 42, are projected and around the support portions 56. A guide wall 57 is formed along the projection. A groove portion 56a through which the lamp pin 29 can pass is formed between the pair of support portions 56, and a claw portion 56b that prevents and locks the rotor 42 that is rotatably supported is formed at the tip of the pair of support portions 56. ing. Furthermore, the pair of support portions 56 are formed with stopper portions 56c protruding outward, and the diameter of the virtual outer diameter circle formed by these stopper portions 56c is that of the pair of lamp pins 29 of the straight tube lamp 13. It is smaller than the size of the facing interval and is formed to be approximately the same as the interval between the pair of lamp pins of the G13 type base. Further, the guide wall 57 is formed with a notch portion 57a for giving moderation to the rotor 42 at a predetermined rotational position every 90 °.

  The rotor 42 is made of an insulating synthetic resin and is formed in a cylindrical shape that is rotatably fitted around the support portion 56 of the cover 47. A groove portion 60 that allows the lamp pin 29 to pass therethrough is formed along the radial direction at a front position of the rotor 42.

  The front portion of the rotor 42 is rotatably disposed in the opening 49 of the case 46, and the front surface of the rotor 42 protrudes from the front surface of the case 46 and has a protrusion 28 of the base 23 of the straight tube lamp 13. A pair of fitting protrusions 61 that are slidably fitted are formed to protrude.

  The rear portion of the rotor 42 is disposed between the support portion 56 and the guide wall 57, and a pair of protrusions 62 are formed to protrude at two locations parallel to the groove direction of the groove portion 60 on the rear outer peripheral surface of the rotor 42. ing. The protrusion 62 engages with the notch 57a of the guide wall 57 to give moderation to the rotational position of the rotor 42, and a part of the rotor 42 is elastically deformed around the protrusion 62, so that the protrusion 62 is The rotor 42 is allowed to rotate by contacting the inner peripheral surface of the guide wall 57 and sliding on the inner peripheral surface.

  In addition, the power supply terminal 43 is formed by a conductive leaf spring, and is connected to the power supply terminal holding part 51 on the base end side of the case 46, and the power supply terminal holding part on the front end side of the case 46 A front end portion 66 disposed at 52 and a lamp pin connection portion 67 connected to the lamp pin 29 are formed between the electric wire connection portion 65 and the front end portion 66.

  The electric wire connecting portion 65 has an insertion hole 68 through which the electric wire inserted from the electric wire insertion hole 53 is inserted, and a locking piece 69 that is electrically connected to the electric wire inserted through the insertion hole 68 and prevents the electric wire from coming off. have.

  The lamp pin connection portion 67 is formed with a recess 70 on the contact surface side with which the lamp pin 29 contacts. The recessed portion 70 has a recessed surface 71 on the back side and a pair of inclined surfaces 72 at both the proximal end and the distal end of the recessed surface 71. The ratio between the width dimension a of the lamp pin 29, the width dimension b on the back side of the inclined surface 72, and the width dimension c on the opening side of the inclined surface 72 is in a relationship of 4: 3: 4.5. In a connected state of 43 and the lamp pin 29, the two inclined surfaces 72 of the recessed portion 70 are in contact with the two corners on the outer side of the connecting portion 29a having a rectangular cross section of the lamp pin 29, respectively.

  The earthing socket 17 has the earthing pin 30 of the straight tube lamp 13 inserted along the longitudinal direction of the oval connecting portion 30b of the earthing pin 30, and is 90 ° around the tube axis of the straight tube lamp 13. By being rotated, the longitudinal direction of the oval connecting portion 30b of the ground pin 30 is transverse to the insertion direction into the socket 17, and is electrically connected to the ground terminal disposed in the socket 17. The socket 17 is supported to prevent it from coming off.

  The lighting device 18 shown in FIG. 7 receives a commercial AC power supply, converts AC power into DC power, and converts the DC power into a pair of power supply terminals 43 of the power supply socket 16 and a pair of straight tube lamps 13. Is supplied to the light source unit 22 through the lamp pin 29.

  Next, in the lighting device 11 configured as described above, when the straight tube lamp 13 is connected, as shown in FIG. 6, the lamp pins 29 of the straight tube lamp 13 and Each earth pin 30 is inserted and rotated 90 degrees about the tube axis of the straight tube lamp 13 so that the straight tube lamp 13 is mounted between the sockets 16 and 17.

  When the lamp pin 29 of the straight tube lamp 13 is attached to the power supply socket 16, as shown in FIG. 2, the pair of lamp pins 29 is inserted into the groove 46 of the case 46 and the groove portion 60 of the rotor 42 and the groove portion of the support portion 56. Inserted into 56a, one lamp pin 29 abuts against the edge of the opening 49 and the insertion position is regulated. At this time, the protrusion 28 protruding from the end face of the base 23 of the straight tube lamp 13 is slidably fitted between the pair of fitting protrusions 61 of the rotor 42.

  The straight tube lamp 13 is rotated by 90 ° about the tube axis of the straight tube lamp 13 to the connection position so that the radiation direction of the light is directed to a predetermined irradiation direction. At this time, if the insertion position of the lamp pin 29 in the longitudinal direction of the straight tube lamp 13 is not inserted to the predetermined position of the socket 16 or if the straight tube lamp 13 is inclined with respect to the socket 16, The portion 29b contacts the edge of the insertion groove 50, the stopper portion 56c of the support portion 56, and the like, and the rotation is restricted. Therefore, when the insertion position of the lamp pin 29 in the longitudinal direction of the straight tube lamp 13 is inserted to the predetermined position of the socket 16 and the straight tube lamp 13 is parallel to the socket 16, the straight tube lamp 13 rotations are allowed.

  As shown in FIG. 1, the pair of lamp pins 29 for rotating the straight tube lamp 13 abuts on the rotor 42 on the outer diameter side of the support portion 56, and the protrusion 28 of the base 23 is connected to the rotor 42. By contacting the fitting projection 61, the rotor 42 is rotated together with the straight tube lamp 13.

  During the rotation of the straight tube lamp 13, the connection portion 29a of the pair of lamp pins 29 contacts the lamp pin connection portion 67 of the pair of power supply terminals 43, and the lamp pin connection portion 67 is elastically deformed outward.

  When the rotor 42 rotates, the projecting portion 62 of the rotor 42 is rotated from the notched portion 57a of the guide wall 57 and sliding on the inner peripheral surface of the guide wall 57, and the pair of lamp pins 29 are connected to each other. , The protrusion 62 of the rotor 42 fits into the notch 57a located next to the guide wall 57, adding to the rotation of the straight tube lamp 13 and rotating the straight tube lamp 13 to the connection position. Can be confirmed.

  When the straight tube lamp 13 is rotated to the connection position, the groove portion 60 of the rotor 42 is disengaged from the position of the insertion groove 50 of the case 46 and is closed at the edge of the opening portion 49 of the case 46, and the lamp pin 29 is inserted into the case 46. It is prevented from falling off the groove 50. Furthermore, the hooking portion 29b of the lamp pin 29 is disposed at a position where it can be hooked on the edge of the power supply terminal 43 and the opening 49 of the case 46, and the lamp pin 29 is prevented from falling out of the opening 49 of the case 46. .

  Then, when the straight tube lamp 13 is rotated to the connection position, both inclined surfaces 72 of the recess portion 70 provided in the lamp pin connection portion 67 of the pair of power supply terminals 43 are connected to each other in a rectangular section shape of the pair of lamp pins 29. In other words, the power supply terminals 43 are in contact with the lamp pins 29 at two points.

  On the other hand, the ground pin 30 of the straight tube lamp 13 is inserted along the longitudinal direction of the elliptical connecting portion 30b of the ground pin 30, and the ground pin 30 of the straight tube lamp 13 is inserted in the tube axis of the straight tube lamp 13. , The longitudinal direction of the oval connecting portion 30b of the ground pin 30 is transverse to the direction of insertion into the socket 17 and is electrically connected to the ground terminal arranged in the socket 17 At the same time, the socket 17 is supported to prevent it from coming off.

  Then, by the operation of the lighting device 18, DC power from the lighting device 18 is supplied to the light source unit 22 through the pair of power supply terminals 43 of the power supply socket 16 and the pair of lamp pins 29 of the straight tube lamp 13, and the light source unit 22 Each of the semiconductor light emitting elements 25 is turned on, and light from each of the semiconductor light emitting elements 25 passes through the translucent cover 21 and is irradiated in a predetermined irradiation direction below the lighting fixture 12.

  When the straight tube lamp 13 is removed, the straight tube lamp 13 is rotated 90 ° to the insertion position. Thereby, in the power supply socket 16, the groove portion 60 of the rotor 42 that rotates together with the lamp pin 29 coincides with the insertion groove 50 of the case 46, so that the lamp pin 29 can be removed through the insertion groove 50 of the case 46. it can. On the other hand, in the grounding socket 17, the longitudinal direction of the connecting portion 30 b of the ground pin 30 coincides with the insertion direction with respect to the socket 17, and the ground pin 30 can be removed from the socket 17.

  In the power supply socket 16, the pair of power supply terminals 43 are in contact with the two corners of each of the two outer sides of the connection portion 29 a having a square cross section of the pair of lamp pins 29. Thus, the electrical connection can be ensured, and the power can be reliably supplied from the power supply terminal 43 to the lamp pin 29.

  In particular, since the DC power flowing from the power supply terminal 43 to the lamp pin 29 is low current and low voltage, if there is only one contact point, it is easy to cause non-lighting due to poor contact. It is possible to reliably prevent the 13 from being turned off.

  The pair of lamp pins 29 of the straight tube lamp 13 rotate together with the rotor 42 on the outer diameter side from the support portion 56. Therefore, for example, when trying to connect the G13 base of a straight tube fluorescent lamp to the socket 16, even if a pair of lamp pins of the G13 base is inserted through the insertion groove 50 of the case 46 and rotated, the G13 base The distance between the pair of lamp pins is narrower than the distance between the pair of lamp pins 29 of the straight tube lamp 13, the pair of lamp pins of the G13 type cap contacts the stopper portion 56 c of the support portion 56, and the G13 type cap is attached to the socket 16. Can not do it.

  The recess 70 of the lamp pin connection portion 67 of the power supply terminal 43 can be formed into a V-shaped cross section or a cross section, for example, as long as it can come into contact with two outer corners of the connection portion 29a having a square cross section of the lamp pin 29. Any shape such as an arc shape may be adopted.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

11 Lighting equipment
13 Straight tube lamp
16 socket
29 Lamp pin
41 Socket body
43 Feeding terminal
49 opening
50 Insertion groove

Claims (2)

An opening is provided on the front surface, and an insertion groove that communicates from the front end surface intersecting the front surface to the opening on the front surface is provided, and a pair of lamp pins having a square cross section protruding from one end of the straight tube lamp are provided in the insertion groove. A socket body that is inserted into the insertion position in the opening through the socket and is rotated and mounted from the insertion position to the connection position in the opening;
A pair of power supply terminals disposed in the socket body and in contact with the two corners on the outside of each lamp pin rotated to the connection position;
A socket characterized by comprising: A straight tube lamp having a pair of lamp pins with a square cross section projecting at one end;
The socket of claim 1 to which a lamp pin of a straight tube lamp is connected;
An illumination device comprising:

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