JP2012009392A - Straight tube led lamp and lamp socket used for it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a straight tube LED lamp in which wrong installation on a lighting fixture for a fluorescent lamp hardly occurs, and a lamp socket used for the same.SOLUTION: The straight tube LED lamp 1 is provided with an arc tube 2 of straight tube shape in which a light-emitting diode is housed, a power feeding base 3 installed on one end side in axial direction of the arc tube 2, and a grounding base 4 installed on the other end side in axial direction of the arc tube 2. The power feeding base 3 has two base pins 7 (power feeding terminals) which are electrically connected to a power feeding contactor provided on a power feeding lamp socket 10. The grounding base 4 has a grounding terminal 8 which is electrically connected to a grounding contactor provided on a grounding lamp socket 20.

Description

  The present invention relates to a straight tube type LED lamp and a lamp socket used therefor.

  2. Description of the Related Art Conventionally, lighting fixtures using straight tube fluorescent lamps have been widely used as household lighting fixtures or facility lighting fixtures.

  On the other hand, in recent years, LED lamps using light emitting diodes, which consume less power than fluorescent lamps, are becoming widespread, and LED lamps that can be attached to existing lighting fixtures that use straight tube fluorescent lamps are straight tube types. It is offered to the market as an alternative light source for fluorescent lamps.

  Such an LED lamp uses the same base (G13 type base defined in JIS C7709-1) as the straight tube fluorescent lamp so that it can be replaced with a straight tube fluorescent lamp. The tube diameter and tube length were also formed to the same dimensions as the straight tube fluorescent lamp. Therefore, instead of the straight tube fluorescent lamp, it is possible to mount the LED lamp as it is in a lamp socket of a lighting fixture corresponding to the straight tube fluorescent lamp (see, for example, Patent Document 1).

  Some LED lamps have a built-in power supply circuit and can be lit as they are with a lighting circuit for fluorescent lamps. However, they cannot be lit with a lighting circuit for fluorescent lamps and need to be replaced with a lighting circuit for LED lamps. Some are. Therefore, when remodeling existing lighting fixtures that use straight tube fluorescent lamps so that LED lamps that require a dedicated lighting circuit can be used, the lighting circuit is replaced with one for LED lamps. It was.

JP 2004-335426 A

  As described above, when the straight tube fluorescent lamp and the LED lamp as an alternative light source use the same base, the straight tube fluorescent lamp is used again even after the lighting device for the fluorescent lamp is modified for the LED lamp. May be mounted, or LED lamps from other manufacturers may be mounted. In addition, there is a possibility that a straight tube LED lamp that cannot be lit by a lighting circuit for a fluorescent lamp is erroneously connected to a lighting fixture having a lighting circuit for a straight tube fluorescent lamp.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a straight tube LED lamp that is less likely to be erroneously attached to a lighting device for a fluorescent lamp, and a lamp socket used therefor. is there.

  In order to solve the above-mentioned problems, a straight tube type LED lamp of the present invention includes a straight tubular light emitting tube containing a light emitting diode therein, a power supply cap provided on one end side in the axial direction of the light emitting tube, and a light emitting tube. A grounding base provided on the other axial end side of the power supply, the power supply base is provided with a power supply terminal electrically connected to the power supply contact of the lamp socket, and the grounding base includes a lamp. A ground terminal that is electrically connected to the contact for grounding the socket is provided.

  In this straight tube type LED lamp, the power supply terminal is preferably composed of two cap pins connected to the positive electrode side and the negative electrode side of the DC power supply via the lamp socket.

  In this straight tube type LED lamp, the power supply terminal is preferably formed of a DC plug.

  In this straight tube type LED lamp, it is also preferable that the shape of the ground terminal viewed from the axial direction is formed in an elongated shape in the mounting direction to the lamp socket.

  In this straight tube LED lamp, it is also preferable that the end face of the power supply base is provided with recesses on both sides of the central portion in the radial direction, and a power supply terminal is provided at the central portion.

  In this straight tube type LED lamp, it is also preferable that a recess is provided on the outer periphery of the end face of the power supply base, and a power supply terminal is provided in the central portion surrounded by the recess.

  In this straight tube type LED lamp, it is also preferable that a fitting recess that fits with a fitting projection on the lamp socket side is provided at the base of the protruding portion at the center of the feeding base.

  In this straight tube type LED lamp, the feeding base is provided with a fitting protrusion that protrudes from the tip of the protruding portion at the center portion in a direction orthogonal to the axial direction and fits into the fitting groove on the lamp socket side. Is also preferable.

  The lamp socket of the present invention is a lamp socket to which any of the straight tube LED lamps described above is mounted, and a power supply lamp socket having a first base receiving portion to which a power base is mounted, It comprises a lamp socket for grounding provided with a second base receiving part to which the grounding base is mounted.

  In this lamp socket, the first base receiving part has an insertion groove into which two base pins constituting the power supply terminal are inserted, and a rotor that is rotated in accordance with the rotation of the arc tube. It is also preferable to provide a power supply contact that is electrically connected to the base pin when rotated.

  In this lamp socket, it is also preferable that the second base receiving portion is provided with a ground contact for performing electrical connection with the ground terminal and mechanical holding.

  In this lamp socket, the second base receiving portion is provided with an insertion groove into which the ground terminal is inserted, and a ground contact disposed in the groove of the insertion groove and electrically connected to the ground terminal, It is also preferable that the ground terminal is rotatable in a state where the ground terminal is in contact with the ground contact.

  In this lamp socket, the insertion groove preferably has a wide portion having a wider groove width than the side close to the grounding base in the axial direction.

  In this lamp socket, it is also preferable that an opening larger than the ground terminal is provided at the end of the insertion groove.

  In this lamp socket, it is also preferable that the first base receiving portion is provided with a convex portion at a portion corresponding to the outer peripheral portion of the power supply base.

  In this lamp socket, the first base receiving part has an insertion groove into which the power supply terminal is inserted and is rotated as the arc tube rotates, and the power supply terminal when the rotor is rotated. It is also preferable that a power supply contactor to be electrically connected is provided and a convex portion is provided at a portion corresponding to the concave portion of the power supply base.

  In this lamp socket, it is also preferable that a fitting groove into which a fitting protrusion provided at the tip of the protruding portion of the feeding base is fitted is provided at the base of the convex portion.

  In this lamp socket, it is also preferable that a fitting projection that fits into a fitting recess provided in a base portion of the protruding portion of the feeding base is provided at the tip of the projection.

  According to the present invention, since different caps are provided on one end side and the other end side of the arc tube, the LED lamp is erroneously connected to a lighting device for a straight tube fluorescent lamp having the same shape at both ends. The possibility of doing so can be reduced. In addition, it is easily distinguishable from straight tube fluorescent lamps with the same shape of cap at both ends, further reducing the possibility of LED lamps and straight tube fluorescent lamps being erroneously connected to non-corresponding lighting fixtures. it can.

(A) and (b) are the external appearance perspective views of the straight tube | pipe type LED lamp of Embodiment 1, and a lamp socket used for it. The straight tube | pipe type LED lamp and lamp socket same as the above are shown, (a) is the external appearance perspective view which expanded the nozzle | cap | die for power supply, and a lamp socket, (b) is the external appearance perspective view which expanded the nozzle | cap | die for grounding and the lamp socket. . It is an external appearance perspective view of the lighting fixture using a straight tube | pipe type LED lamp and lamp socket same as the above. The lamp socket for electric power feeding used for the above is shown, (a) is a front view, (b) is a top view, and (c) is a right side view. It is an external appearance perspective view of the lamp socket for electric power feeding used for the same as the above. The earthing | grounding lamp socket used for the same is shown, (a) is a front view, (b) is a top view, (c) is a right view. It is an external appearance perspective view of the lamp socket for grounding used for the same as the above. It is an external appearance perspective view of the earthing contact of the lamp socket for earthing used for the same as the above. (A) and (b) are the principal part expansion perspective views of the LED lamp of Embodiment 2. FIG. The lamp socket for electric power feeding used for the above is shown, (a) is a front view, (b) is a top view, and (c) is a right side view. It is an external appearance perspective view of the lamp socket for electric power feeding used for the same as the above. (A) and (b) are the principal part expansion perspective views of the LED lamp of Embodiment 3. FIG. The lamp socket for electric power feeding used for the above is shown, (a) is a front view, (b) is a top view, and (c) is a right side view. It is an external appearance perspective view of the lamp socket for electric power feeding used for the same as the above. (A) and (b) are the external appearance perspective views of the nozzle | cap | die for electric power feeding with which the LED lamp of Embodiment 4 is equipped, and the lamp socket for electric power feeding used for it. It is an external appearance perspective view which shows the other form of the LED lamp same as the above.

  Hereinafter, embodiments of a straight tube LED lamp (hereinafter abbreviated as an LED lamp) according to the present invention and a lamp socket to which the LED lamp is mounted will be described with reference to the drawings.

  FIGS. 1A and 1B are external perspective views of the LED lamp 1. The LED lamp 1 includes an arc tube 2 formed in a straight tube shape from a synthetic resin material having translucency. A feeding base 3 is provided at one axial end of the arc tube 2, and a grounding cap 4 is provided at the other axial end of the arc tube 2.

  A mounting board (not shown) made of a printed circuit board having a slightly shorter overall length than the arc tube 2 is housed inside the arc tube 2, and a plurality of light emitting diodes are provided on one surface of the mounting board. Implemented at intervals.

  FIG. 2A is a perspective view of an enlarged main part of the power supply base 3, and the end faces of the power supply base 3 have recesses 6 and 6 that are recessed in a semicircular shape on both sides of the central part in the radial direction. A substantially rectangular parallelepiped protruding portion 5 protruding forward from the concave portion 6 is provided at the center portion. The projecting portion 5 is provided with two caps 7, 7 formed in a round bar shape with a metal material and projecting in the axial direction at symmetrical positions with respect to the central axis of the arc tube 2. . The two cap pins 7 and 7 are electrically connected to the mounting board, for example, via lead wires inside the arc tube 2. In the circuit formed on the mounting substrate, the DC voltage input from the base pins 7 and 7 is supplied to the light emitting diode via the full-wave rectifier, and any of the base pins 7 and 7 is the positive side of the DC power supply. Even when connected to the forward current, a forward current flows through the light emitting diode.

  On the other hand, FIG. 2B is a perspective view of an enlarged main part of the grounding base 4, and the end face of the grounding base 4 is substantially disc-shaped, and a round bar shape is formed from the center of the end face by a metal material. A shaft portion 8a is provided that protrudes in the axial direction. At the tip of the shaft portion 8a, a metal cam plate 8b is formed integrally with the shaft portion 8a. The metal cam plate 8b is formed in an elliptical shape with the long axis direction as viewed from the axial direction. The shaft portion 8a and the cam plate 8b constitute the ground terminal 8. The major axis direction of the cam plate 8b is parallel to the direction in which the two cap pins 7 and 7 are arranged.

  The lamp socket to which the LED lamp 1 is attached includes a power supply lamp socket 10 having a first base receiving part to which a power supply base 3 is attached, and a second base receiving part to which a grounding base 4 is attached. It comprises a lamp socket 20 for grounding.

  4 and 5, the power supply lamp socket 10 includes a body 11, a rotor 12 rotatably attached to the body 11, and a pair of power supply contacts ( (Not shown). In the description of the power supply lamp socket 10, the vertical and horizontal directions are defined in the direction shown in FIG. 4A, and the left side of FIG. 4C is described as the front side and the right side as the rear side.

  The body 11 is formed in a substantially rectangular parallelepiped shape with a synthetic resin, and its upper surface (lower surface in the attached state) is formed in a curved surface shape such that the central portion in the left-right direction is convex upward compared to both side portions. A concave portion 13 that is recessed in a round hole shape is opened on the front surface of the body 11, and an insertion groove 14 that is open forward and is continuous with the concave portion 13 is provided at the center in the left-right direction on the upper surface of the body 11. The body 11 is provided with a cylindrical support shaft 15 projecting forward from the bottom of the recess 13, and the lower and upper side portions of the support shaft 15 are positioned below the insertion groove 13. Grooves 15a and 15b are formed respectively.

  The rotor 12 is made of a synthetic resin molded product and has a shaft hole 16a into which the support shaft 15 is fitted. The rotor 12 is rotatably arranged around the support shaft 15 by fitting the support shaft 15 into the shaft hole 16a. A substantially cylindrical tube portion 16 is provided. The front surface of the cylindrical portion 16 is substantially at the same position as the front surface of the body 11 in the front-rear direction, and the cylindrical portion 16 rotates to the position shown in FIG. Insertion grooves 16b and 16b that are open to the side are formed. Further, on the front surface of the cylindrical portion 16, ribs (convex portions) 17 that protrude forward are provided on both the left and right sides with the insertion grooves 16b and 16b interposed therebetween. The ribs 17 and 17 are formed so that the inner side surfaces (surfaces facing each other) are flat, and the outer side surfaces are formed on circumferential surfaces centering on the rotation center of the cylindrical portion 16. The interval between the two ribs 17 and 17 is set to be slightly larger than the width of the protruding portion 5 of the power supply base 3. The height of the rib 17 (distance from the front surface of the rotor 12 to the tip of the rib 17) is smaller than the height of the protrusion 5 (distance from the front surface of the recess 6 to the tip surface of the protrusion 5). It has become.

  Here, in a state where the rotor 12 is rotated to the position shown in FIG. 4A, the insertion groove 14, the grooves 15 a and 15 b, and the insertion groove 16 b are arranged in a line, and the insertion groove of the rotor 12 passes through the insertion groove 14. The cap pin 7 can be inserted into 16b or moved outward. On the other hand, when the rotor 12 is rotated 90 degrees from the position shown in FIG. 4A, the insertion grooves 16b and 16b are arranged in the left-right direction, and both end sides of the insertion groove 16b are the peripheral edge of the recess 13 and the support shaft 15. Therefore, the cap pin 7 is held in the insertion groove 16b. Here, the rotor 12 and the contact for power supply constitute a first base receiving part to which the base 3 for power supply is attached.

  Next, the grounding lamp socket 20 will be described with reference to FIGS. In the explanation of the lamp socket 20 for grounding, the vertical and horizontal directions are defined in the direction shown in FIG. 6A, and the left side in FIG. 6C is described as the front side and the right side as the rear side.

  The grounding lamp socket 20 includes a body 21 and a grounding contact 22 accommodated in the body 21.

  The body 21 is formed into a substantially rectangular parallelepiped shape from a synthetic resin, and the upper surface (the lower surface in the attached state) is formed in a curved surface shape such that the central portion in the left-right direction is convex upward compared to the both side portions. An insertion groove 23 into which the ground terminal 8 of the LED lamp 1 is inserted is formed from the upper surface to the front surface of the body 21. On the upper surface of the body 21, a wide portion 23 a having a wider groove width than the side close to the grounding cap 4 is provided on the rear end side of the insertion groove 23, and a cam plate of the ground terminal 8 is provided on the wide portion 23 a. 8b is inserted. The groove width of the wide portion 23a is larger than the minor dimension of the cam plate 8b of the ground terminal 8. On the upper surface of the body 21, the groove width of the narrow portion of the insertion groove 23 is set to be larger than the diameter of the shaft portion 8a and smaller than the short diameter of the cam plate 8b. On the other hand, an insertion groove 23 is formed on the front surface of the body 21 in the vertical direction up to a position where the ground terminal 8 is inserted when the LED lamp 1 is mounted. At the lower end of the insertion groove 23, an elliptical opening 23b that is slightly larger than the cam plate 8b of the ground terminal 8 is formed.

  As shown in FIG. 8, the ground contact 22 is formed by bending a strip of a metal material (for example, copper alloy) having good conductivity. The ground contact 22 includes a center piece 22a fixed to the body 21, contact pieces 22b and 22b projecting upward from both side edges of the center piece 22a, and outward from the tip ends of the contact pieces 22b and 22b. The bent guide pieces 22c and 22c are integrally provided. Here, each contact piece 22b is bent into a substantially V shape, and the middle portion in the vertical direction protrudes outward from both sides, and the ground contact 22 is formed in an inverted Ω shape as a whole.

  The contact 22 for grounding is accommodated in the body 21 with the guide piece 22c on the upper side and the center piece 22a on the lower side so that the contact pieces 22b and 22b are arranged on the left and right sides of the insertion groove 23. Here, a portion of the body 21 in which the insertion groove 23 is provided and the ground contact 22 constitute a second base receiving portion to which the ground base 4 is attached.

  FIG. 3 is an external perspective view of the lighting fixture 30 including the lamp sockets 10 and 20 described above. The lighting fixture 30 is used by being embedded in a ceiling surface. A lighting circuit (not shown) is housed in an elongated rectangular parallelepiped fixture body 31. The lamp sockets 10 and 20 described above are attached face-to-face on the lower surfaces of both ends in the direction. Thus, the power supply base 3 and the grounding base 4 provided at both ends of the LED lamp 1 are attached to the power supply lamp socket 10 and the grounding lamp socket 20, respectively. Attached to. In addition, 32 in FIG. 3 is a reflecting plate which reflects the light from the LED lamp 1 to the lower illumination space.

  Here, a method for attaching and detaching the LED lamp 1 to and from the lamp sockets 10 and 20 will be described.

  When the LED lamp 1 is mounted in the lamp sockets 10, 20, the power supply base 3 is on the lamp socket 10 side and the grounding base 4 is on the lamp socket 20 side. Approach the sockets 10 and 20. When the base pin 7 is inserted into the insertion groove 14 of the lamp socket 10 and the ground terminal 8 is inserted into the insertion groove 23 of the lamp socket 20, the protruding portion 5 of the power supply base 3 becomes a pair of ribs 17, 17 is inserted. When the LED lamp 1 is inserted to the proper insertion position, the two cap pins 7 and 7 are inserted into the insertion grooves 16b and 16b, respectively, and between the contact pieces 22b and 22b provided in the ground contact 22 8 is inserted. In this state, when the light emitting tube 2 is rotated 90 degrees so that the light emitting diode faces downward, the protrusion 5 pushes the ribs 17 and 17, whereby the rotor 12 rotates together with the light emitting tube 2, and the base pin 7 , 7 are arranged on the left and right sides of the support shaft 15. At this time, the two cap pins 7 and 7 are electrically connected to two power supply contacts arranged inside the body 11, and are connected from the lighting circuit (DC power supply) via the lamp socket 10. DC power is supplied to the light emitting diode. Further, as the arc tube 2 rotates, the cam plate 8b rotates to a position where the major axis direction is parallel to the left-right direction, so that both sides of the cam plate 8b in the major axis direction come into contact with the contact pieces 22b, 22b. At this time, the cam plate 8b is electrically connected to the ground contact 22 so that the LED lamp 1 is grounded. Further, since the width dimension in the left-right direction of the cam plate 8b is larger than that in the case where the major axis direction of the cam plate 8b is parallel to the lamp insertion direction, the left and right contact pieces 22b are separated by the both sides in the major axis direction of the cam plate 8b. It can be bent outward. Therefore, the cam plate 8b is mechanically held by the elastic force of the left and right contact pieces 22b. In this state, the base pins 7 and 7 are held in the insertion grooves 16 b and 16 b, respectively, so that the power supply base 3 does not come off from the lamp socket 10.

  On the other hand, when removing the LED lamp 1 from the lamp sockets 10 and 20, if the arc tube 2 is rotated 90 degrees from the mounted state, the insertion groove 14, the grooves 15a and 15b, and the insertion groove 16b are aligned. In this case, the base pins 7 and 7 can be moved to the outside of the insertion groove 16 b, and the base pins 7 and 7 are moved to the outside of the insertion groove 14 by moving the power supply base 3 side of the LED lamp 1 downward. Get out. When the power supply base 3 is detached from the lamp socket 10 and the arc tube 2 is inclined obliquely with the power supply base 3 facing down, the ground terminal 8 is opened when the arc tube 2 is pulled away from the lamp socket 20. Exiting from the portion 23b, the removal of the LED lamp 1 is completed. Here, the opening 23b provided at the end of the insertion groove 23 is larger than the ground terminal 8 (cam plate 8b), and the ground terminal 8 (cam plate 8b) can be passed through the opening 23b. Therefore, when the LED lamp 1 is removed, the ground terminal 8 is moved downward in the insertion groove 23, so that the ground terminal 8 can be removed from the opening 23 b without having to be pulled out from the lower opening of the insertion groove 23. The LED lamp 1 can be easily removed and removed easily.

  In addition, when it is going to mount | wear with the lamp | ramp base of a fluorescent lamp to the lamp socket 10 for LED lamps, since the ribs 17 and 17 interfere with the end surface of the nozzle | cap | die of a fluorescent lamp, a fluorescent lamp is not mounted | worn by mistake.

  As described above, the LED lamp 1 of the present embodiment includes the feeding base 3 on one end side in the axial direction of the arc tube 2 and the grounding base 4 on the other end side in the axial direction. The power supply base 3 is provided with a power supply terminal (base pin 7) electrically connected to the power supply contact of the power supply lamp socket 10, and the grounding base 4 has a grounding lamp socket. A ground terminal 8 that is electrically connected to the 20 grounding contacts 22 is provided.

  As a result, different caps are provided on the one end side and the other end side of the arc tube 2, so that the LED lamp 1 is erroneously connected to a lighting device for a straight tube fluorescent lamp having the same shape at both ends. The possibility can be reduced. In addition, it can be easily distinguished from a straight fluorescent lamp having the same shape at both ends, and the LED lamp 1 and the straight fluorescent lamp may be erroneously connected to lighting fixtures that do not correspond to each. Can be reduced.

  Further, the shape of the cam plate 8 b provided in the ground terminal 8 as viewed from the axial direction is formed in an elongated shape in the mounting direction to the lamp socket 20.

  Thus, when the cam plate 8b is inserted into the insertion groove 23 of the lamp socket 20, the lateral dimension of the cam plate 8b is smaller than when the arc tube 2 is rotated by 90 degrees. , 22b, the force required when inserting the cam plate 8b can be reduced. Further, if the arc tube 2 is rotated 90 degrees after the cam plate 8b is inserted, the lateral dimension of the cam plate 8b is increased, and the amount of bending of the contact pieces 22b, 22b can be increased, so that the ground contact 22 is connected to the ground terminal. The force holding 8 can be increased.

  The lamp socket to which the LED lamp 1 is attached includes a power supply lamp socket 10 having a first base receiving part to which the power supply base 3 is attached and a second base receiving part to which the grounding base 4 is attached. And the lamp socket 20 for grounding provided with.

  As a result, the two lamp sockets to which the LED lamps 1 are mounted are constituted by the power supply lamp socket 10 and the grounding lamp socket 20, so that the straight tube fluorescent lamps having the same shape of the base at both ends are provided. Can reduce the possibility of incorrect mounting.

  Further, the end face of the power supply base 3 is provided with recesses 6 and 6 on both sides of the central part in the radial direction, and two base pins 7 (power supply terminals) are provided on the protruding part 5 provided in the central part. Yes. On the other hand, the rotor 12 of the lamp socket 10 is provided with ribs 17 and 17 at portions corresponding to the recesses 6 and 6 of the power supply base 3.

  As a result, when the fluorescent lamp base is to be attached to the lamp socket 10, the ribs 17 and 17 interfere with the end face of the fluorescent lamp base, so that the fluorescent lamp is not erroneously attached.

  The first base receiving portion of the lamp socket 10 has an insertion groove 16b into which the base pin 7 is inserted and is rotated according to the rotation of the arc tube 2, and the rotor 12 is rotated. And a power supply contact that is electrically connected to the cap pin 7 when the power is applied.

  Thereby, after inserting the cap pin 7 provided in the power supply cap 3 into the insertion groove 16b, the arc tube 2 is rotated, whereby electrical connection and mechanical holding can be performed.

  In addition, the second base receiving portion provided in the lamp socket 20 is provided with a ground contact 22 for electrical connection with the ground terminal 8 and mechanical holding.

  As a result, both the electrical connection to the grounding terminal 8 and the mechanical holding can be performed by the single grounding contact 22, so that a configuration for holding the grounding base 4 is not required.

  The second base receiving portion is provided with an insertion groove 23 into which the ground terminal 8 is inserted, and a ground contact 22 that is disposed in the groove of the insertion groove 23 and is electrically connected to the ground terminal 8. Thus, the ground terminal 8 is rotatable in a state where the ground terminal 8 is in contact with the ground contact 22.

  Thus, even when the power supply cap 3 is mounted on the lamp socket 10 by rotating the arc tube 2, it is not necessary to provide a rotation mechanism in the second cap receiver, and the configuration of the second cap receiver can be simplified. it can.

  In addition, the insertion groove 23 is provided with a wide portion 23 a having a wider groove width on the rear end side than the side close to the grounding cap 4 in the axial direction of the arc tube 2.

  Accordingly, the LED lamp 1 can be prevented from coming off by engaging the cam plate 8b of the ground terminal 8 with the narrow groove.

  Furthermore, an opening 23 b larger than the ground terminal 8 is provided at the end of the insertion groove 23.

  Thus, if the power supply base 3 is removed from the lamp socket 10, the ground terminal 8 can be removed through the opening 23b without passing through the insertion groove 23, and the LED lamp 1 can be easily removed. it can.

(Embodiment 2)
A second embodiment of the present invention will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected to the component which is common in LED lamp 1 and lamp socket 10 and 20 which were demonstrated in Embodiment 1, and the description is abbreviate | omitted.

  In the LED lamp 1 described in the first embodiment, the recesses 6 are provided on the left and right sides of the protruding portion 5 on the end face of the power supply base 3. In this embodiment, as shown in FIG. The protruding portion 5 </ b> A is provided only at the central portion of the end face of the base 3. The protruding portion 5A is formed in a size that fits in a region facing the rotor 12 on the end face of the power supply base 3, and surrounds the protruding portion 5A around the entire outer periphery of the end face. A recess 6 is provided.

  10 and 11 show a lamp socket 10 to which the power supply cap 3 of this embodiment is attached. In the lamp socket 10 of the first embodiment, the rib 17 is provided on the front surface of the rotor 12, whereas in the present embodiment, the arc shape is formed along the outer peripheral edge of the rotor 12 on the front surface of the body 11. A curved rib (convex portion) 18 is provided. Here, the rib 18 is formed along the lower half of the rotor 12 (the upper half in the construction state) so as not to interfere with the protruding portion 5A of the power supply base 3 when the power supply base 3 is attached to the lamp socket 10. Has been. The height dimension of the rib 18 (distance from the front surface of the body 11 to the tip of the rib 18) is smaller than the height dimension of the protrusion 5A (distance from the front surface of the recess 6 to the tip surface of the protrusion 5A). ing.

  When the power supply base 3 of the LED lamp 1 is attached to the lamp socket 10, when the base pins 7 and 7 are inserted into the socket through the insertion groove 14 and the LED lamp 1 is inserted to the proper insertion position, the two bases are inserted. The pins 7 and 7 are inserted into the insertion grooves 16b and 16b, respectively. In this state, when the arc tube 2 is rotated 90 degrees so that the light emitting diode faces downward, the cap pins 7 and 7 push the inner surfaces of the insertion grooves 16b and 16b, so that the rotor 12 rotates together with the arc tube 2. The base pins 7 are arranged on the left and right sides of the support shaft 15. At this time, the two cap pins 7 and 7 are electrically connected to two power supply contacts arranged inside the body 11, and are connected from the lighting circuit (DC power supply) via the lamp socket 10. DC power is supplied to the light emitting diode. In addition, since the rib 18 provided in the body 11 is located around the protruding portion 5A, the protruding portion 5A does not interfere with the rib 18 when the LED lamp 1 is attached or detached.

  On the other hand, when the power supply cap 3 is removed from the lamp socket 10, the insertion groove 14, the grooves 15a and 15b, and the insertion groove 16b are arranged in a row if the arc tube 2 is rotated 90 degrees from the mounted state. . When the power supply base 3 side is moved downward in this state, the base pins 7 and 7 come out of the insertion groove 14, so that the power supply base 3 is removed from the lamp socket 10 as described in the first embodiment. be able to.

  Further, when trying to mount a fluorescent lamp base on the lamp socket 10, the rib 18 interferes with the end face of the fluorescent lamp base, so that the fluorescent lamp is not erroneously mounted.

  In the LED lamp 1 described above, the protruding portion 5A of the feeding base 3 is formed in a rectangular parallelepiped shape. However, as shown in FIG. 9B, the protruding portion 5B has an outer diameter of the rotor 12. It is good also as the cylindrical shape set to the outer diameter dimension or less.

(Embodiment 3)
A third embodiment of the present invention will be described with reference to FIGS. In addition, since it is the same as that of the LED lamp 1 and the lamp sockets 10 and 20 which were demonstrated in Embodiment 1 or 2 except the shape of the grounding terminal 8, the same code | symbol is attached | subjected to a common component and the description is abbreviate | omitted. To do.

  In the LED lamp 1 described in the first embodiment, the cam plate 8b of the ground terminal 8 is formed in an elliptical shape when viewed from the axial direction. In the present embodiment, as shown in FIG. The cam plate 8b is formed in a rectangular shape when viewed from the axial direction.

  FIGS. 13 and 14 show a lamp socket 20 to which the above-described grounding cap 4 is mounted. The lamp socket 20 has an opening 23c that opens in a rectangular shape at the lower end side of the insertion groove 23 on the front surface of the body 21. FIG. Is provided. The opening 23c is formed to be slightly larger than the cam plate 8c of the ground terminal 8, and the cam plate 8c can be pulled forward through the opening 23c as described in the first embodiment.

  The shape of the ground terminal 8 viewed from the axial direction is not limited to a rectangular shape, and the cam plate 8d has a shape in which the corners of the rectangle are rounded as shown in FIG. It suffices if it is smaller than the opening 23c.

(Embodiment 4)
A third embodiment of the present invention will be described with reference to FIG. In addition, since it is the same as that of the LED lamp 1 and lamp socket 10 and 20 which were demonstrated in Embodiment 1-3 except the protrusion part 5 of the nozzle | cap | die 3 for electric power feeding, and the rib 17 of the lamp socket 10, it is the same as that of a common component. A reference numeral is attached and the description thereof is omitted.

  In the present embodiment, as shown in FIG. 15A, a fitting recess 5 a is formed at the base of the protruding portion 5 provided on the power supply base 3. In addition, a fitting protrusion 17 a that fits into the fitting recess 5 a is provided at the tip of the rib 17 provided in the lamp socket 10.

  Thus, when the power supply base 3 is attached to the lamp socket 10, the fitting projection 17 a of the rib 17 is fitted into the fitting recess 5 a of the protruding portion 5, whereby the LED lamp 1 is positioned in the axial direction. The LED lamp 1 can be prevented from coming off.

  As shown in FIG. 15 (b), a fitting protrusion 5 b that protrudes in the direction orthogonal to the axial direction is provided from the tip of the protrusion 5, and the fitting protrusion 5 b is fitted to the base of the rib 17. A joint groove 17b may be provided. Also in this case, as described above, the LED lamp 1 can be positioned in the axial direction when the LED lamp 1 is mounted.

  By the way, in the LED lamp 1 of each embodiment described above, the power supply terminal of the power supply base 3 is composed of a round bar-shaped base pin 7, but the shape of the base pin is not limited to the above-mentioned shape, A base pin having a shape as shown in FIG. 16 may be used. The base pins 7a and 7a shown in FIG. 16 are formed by bending a strip-shaped plate, and the two base pins 7a and 7a are parallel so that the direction perpendicular to the lamp axis direction is the normal direction. Has been placed. The tip ends of the two cap pins 7a, 7a are bent at a substantially right angle and protrude outward (opposite to the direction toward the central axis).

  Thus, since the tip end side of the cap pin 7a is bent outward, when the lamp socket 10 is mounted, the power supply contact of the lamp socket 10 is held by the bent portion of the cap pin 7a. The cap pin 7 a is attached to the lamp socket 10. Therefore, the bent portion of the cap pin 7a is caught by the power supply contact, so that the LED lamp 1 is difficult to be removed from the lamp socket 10, and even when the LED lamp 1 is about to be detached from the lamp socket 10, the electrical connection is stabilized. Therefore, arc discharge is less likely to occur.

  Moreover, in the LED lamp 1 of each embodiment described above, the power supply terminal provided in the power supply base 3 is configured by two base pins, but instead of the two base pins, a two-pole single-head plug ( A power supply terminal may be configured by a so-called DC plug. In this case, it is not necessary to provide a rotation mechanism in the power supply base 3, and it is sufficient to provide two power supply contacts similar to the above-described ground contact 22.

DESCRIPTION OF SYMBOLS 1 Straight tube type LED lamp 2 Light emitting tube 3 Power supply base 4 Grounding base 5 Protruding part 5a Fitting recessed part 5b Fitting protrusion 6 Recessed part 7 Cap pin (power supply terminal)
8 Grounding terminal 10, 20 Lamp socket 12 Rotor (first base receiving part)
16b, 16b Insertion groove (first base receiving part)
17, 18 Rib (convex)
17a Fitting protrusion 17b Fitting groove 22 Contact for grounding (second cap receiving part)
23 Insertion groove (second base receiving part)
23a Wide part 23b Opening

Claims (18)

A straight tubular arc tube containing a light emitting diode therein, a feeding base provided on one axial end of the luminous tube, and a grounding cap provided on the other axial end of the luminous tube ,
The power supply base is provided with a power supply terminal electrically connected to the power supply contact of the lamp socket, and the grounding base is electrically connected to the ground contact of the lamp socket. A straight tube type LED lamp characterized by that.   2. The straight tube type LED lamp according to claim 1, wherein the power supply terminal is composed of two cap pins respectively connected to a positive electrode side and a negative electrode side of a DC power supply through the lamp socket.   2. The straight tube type LED lamp according to claim 1, wherein the power supply terminal comprises a DC plug.   The straight tube type LED lamp according to any one of claims 1 to 3, wherein the shape of the ground terminal viewed from the axial direction is formed in an elongated shape in a mounting direction to the lamp socket.   The end face of the base for power supply is provided with concave portions on both sides of a central portion in the radial direction, and the power supply terminal is provided at the central portion. Straight tube LED lamp.   The straight pipe according to any one of claims 1 to 4, wherein a concave portion is provided on an outer periphery of the end face of the power feeding base, and the power feeding terminal is provided in a central portion surrounded by the concave portion. LED lamp.   The straight pipe according to claim 5 or 6, wherein a fitting recess for fitting with a fitting projection on the lamp socket side is provided in a base portion of the protruding portion at the center in the power supply base. LED lamp.   The power supply base is provided with a fitting protrusion that protrudes in a direction orthogonal to the axial direction from a tip of a protruding portion at a central portion and fits into a fitting groove on a lamp socket side. Item 7. The straight tube LED lamp according to any one of Items 5 and 6. A lamp socket to which the straight tube type LED lamp according to any one of claims 1 to 8 is mounted,
A power supply lamp socket having a first base receiving part to which the power supply base is mounted and a grounding lamp socket having a second base receiving part to which the grounding base is mounted. Lamp socket characterized by.   The first base receiving part has an insertion groove into which two base pins constituting the power supply terminal are inserted, and a rotor that is rotated in accordance with the rotation of the arc tube, and the rotor is rotated. The lamp socket according to claim 9, further comprising a power supply contact that is electrically connected to the cap pin when the cap is pressed.   The lamp socket according to claim 9, wherein the second base receiving portion is provided with the ground contact for electrical connection and mechanical holding with the ground terminal.   The second base receiving portion is provided with an insertion groove into which the ground terminal is inserted, and a ground contact disposed in the groove of the insertion groove and electrically connected to the ground terminal. The lamp socket according to claim 9, wherein the grounding terminal is rotatable in a state where the grounding terminal is in contact with the contactor for use.   The lamp socket according to claim 12, wherein the insertion groove has a wide portion having a wider groove width than a side closer to the grounding base in the axial direction.   14. The lamp socket according to claim 12, wherein an opening larger than the ground terminal is provided at a terminal portion of the insertion groove. A lamp socket to which the straight tube LED lamp according to claim 6 is mounted,
A power supply lamp socket having a first base receiving portion to which the power supply base is mounted, and a grounding lamp socket having a second base receiving portion to which the ground base is mounted;
The lamp socket according to claim 1, wherein the first base receiving portion is provided with a convex portion at a portion corresponding to an outer peripheral portion of the power supply base. A lamp socket to which the straight tube type LED lamp according to claim 5 is mounted,
A power supply lamp socket having a first base receiving portion to which the power supply base is mounted, and a grounding lamp socket having a second base receiving portion to which the ground base is mounted;
The first base receiving portion has an insertion groove into which the power feeding terminal is inserted, and a rotor that is rotated in accordance with the rotation of the arc tube, and the power feeding terminal is electrically connected when the rotor is rotated. A lamp socket comprising a power supply contact for connection to the power supply base, wherein a convex portion is provided at a portion corresponding to the concave portion of the power supply base.   The fitting portion into which the fitting protrusion provided in the front-end | tip of the protrusion part of the said electric power feeding base fits was provided in the base part of the said convex part, either of Claim 15 or 16 characterized by the above-mentioned. Lamp socket.   The fitting protrusion which fits into the fitting recessed part provided in the base part of the protrusion part of the said power supply nozzle | cap | die was provided in the front-end | tip part of the said convex part, Either of Claim 15 or 16 characterized by the above-mentioned. Lampholder.

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