JP6442954B2 - Lamp fall prevention device, lighting fixture and lighting device - Google Patents

Description

  The present invention relates to a lamp fall prevention tool, and a lighting fixture and a lighting apparatus using the lamp fall prevention tool.

  2. Description of the Related Art Conventionally, there has been an illuminating device including a long tube-like straight tube lamp having lamp pins at both ends and a lighting fixture having a lamp socket for holding the lamp pin of the straight tube lamp. For example, as disclosed in Patent Document 1, a lamp pin of a straight tube lamp is inserted into the lamp socket from the outer periphery of the lamp socket, and a rotation method for holding the straight tube lamp by rotating and mounting the straight tube lamp. Is often used.

  In addition, the lighting device is often attached to the ceiling of the room, and if the lamp socket of the lighting device attached to the ceiling cannot hold the straight tube lamp, the straight tube lamp falls. Therefore, for example, as in Patent Document 2, an illumination device including a lamp fall prevention tool for preventing a straight tube lamp from falling has been known.

  The illuminating device of Patent Document 2 is a lamp drop prevention tool in which an attaching portion provided with an adhesive layer for attaching to a lighting fixture and a receiving portion for receiving a straight tube lamp detached from the lighting fixture are formed into a ring shape. have. In the lighting device of Patent Document 2, when a straight tube lamp is attached to a lighting fixture, the straight tube lamp is inserted into the lamp fall prevention tool, the straight tube lamp is attached to the lighting fixture, and the lamp fall prevention tool is attached. By attaching the portion to the lighting fixture, the straight tube lamp detached from the lighting fixture can be received by the receiving portion of the fall prevention tool, and the straight tube lamp is prevented from falling.

JP 2006-185786 A Utility Model Registration No. 3162659

  However, it is necessary for the fall prevention tool of the illumination device of Patent Document 2 to insert the straight tube lamp through the lamp fall prevention tool before the straight tube lamp is attached to the lighting fixture. For this reason, when mounting a fall preventive tool on a lighting fixture that has already been fitted with a straight tube lamp, it is necessary to remove the lamp from the socket once and mount the lamp drop preventive tool.

  The present invention has been made to solve the above-described problems, and can be mounted on a lighting fixture to which a straight tube lamp is already mounted without removing the straight tube lamp from the lighting fixture. An object of the present invention is to provide a lamp fall prevention tool and a lighting fixture and a lighting device using the lamp fall prevention tool.

The lamp fall prevention device of the present invention is formed in a lamp socket, and a lamp pin provided at an end portion in the longitudinal direction of an elongated straight tube lamp is inserted in a direction perpendicular to the longitudinal direction of the straight tube lamp. The horizontal width is longer than the width of the insertion groove in the direction perpendicular to the longitudinal direction of the straight tube lamp and the insertion direction of the lamp pin, and the horizontal width is the insertion groove. It is inserted into the insertion groove after being elastically deformed so as to be shorter than the width, and the portion having the lateral width is supported in the insertion groove only by pressing the inner wall of the insertion groove by the restoring force of elastic deformation. Features.

The illumination devices of the present invention, the insertion groove lamp pins provided on the longitudinal end portion of the straight tube lamp long shape is inserted in a vertical insertion direction to the longitudinal direction of the straight tube lamp A lamp socket that holds the lamp pin formed and inserted from the insertion groove, and has a width that is longer than the width of the insertion groove in the direction perpendicular to the longitudinal direction of the straight tube lamp and the insertion direction of the lamp pin. It is elastically deformed and inserted into the insertion groove so that the lateral width is shorter than the width of the groove, and the portion having the lateral width is supported in the insertion groove only by pressing the inner wall of the insertion groove by the elastic deformation restoring force. The lamp fall prevention tool is provided.

Furthermore, the lighting device of the present invention has a long shape, a straight tube lamp provided with a lamp pin at the end in the longitudinal direction, and the lamp pin is inserted in an insertion direction perpendicular to the longitudinal direction of the straight tube lamp. And a lamp socket for holding the lamp pin inserted from the insertion groove, and in a direction perpendicular to the longitudinal direction of the straight tube lamp and the insertion direction of the lamp pin, respectively, than the width of the insertion groove. Inserted only by pressing the inner wall of the insertion groove by the elastic deformation deformation force that is elastically deformed so that the width is longer and the width is shorter than the width of the insertion groove. And a lamp fall prevention tool supported in the groove .

  In the lamp drop prevention device, the lighting fixture, and the lighting device of the present invention, the width of the lamp drop prevention tool is longer than the width of the insertion groove, and the lamp drop prevention tool is elastically deformed and inserted into the insertion groove. The tool can prevent the lamp from falling without removing the straight tube lamp by closing the insertion groove.

1 is a perspective view of a lighting device according to Embodiment 1. FIG. 1 is a perspective view of a straight tube lamp according to Embodiment 1. FIG. 3 is a perspective view of a holding-side socket according to Embodiment 1. FIG. 3 is an exploded perspective view of a holding-side socket according to Embodiment 1. FIG. 2 is a perspective view of a power supply side socket according to Embodiment 1. FIG. 2 is an exploded perspective view of a power supply side socket according to Embodiment 1. FIG. It is the perspective view seen from the prevention tool top surface of the lamp fall prevention tool which concerns on Embodiment 1. FIG. It is the perspective view seen from the prevention tool bottom face of the lamp fall prevention tool which concerns on Embodiment 1. FIG. It is a perspective view of the holding | maintenance side socket in which the lamp fall prevention tool which concerns on Embodiment 1 was inserted. It is a rear view of the holding | maintenance side socket which concerns on Embodiment 1 in the state in which the holding pin of a straight tube | pipe type lamp was inserted and the holding pin is located in an insertion position. It is a rear view of the electric power feeding side socket which concerns on Embodiment 1 in the state in which the electric power feeding pin of a straight tube | pipe type lamp was inserted and the electric power feeding pin is located in an insertion position. It is a rear view of the holding | maintenance side socket which concerns on Embodiment 1 in the state in which the holding pin of a straight tube | pipe type lamp was inserted and the holding pin is located in an attachment position. It is a rear view of the electric power feeding side socket which concerns on Embodiment 1 in the state in which the electric power feeding pin of a straight tube | pipe type lamp was inserted and the electric power feeding pin is located in an attachment position. It is a rear view of the holding | maintenance side socket which concerns on Embodiment 1 in the state which has the holding | maintenance pin of the straight tube | pipe lamp | ramp in a mounting position, and the lamp fall prevention tool was inserted. 6 is an exploded perspective view of a power supply side socket according to Embodiment 2. FIG. It is the perspective view seen from the prevention tool top surface of the lamp fall prevention tool which concerns on Embodiment 2. FIG. It is the perspective view seen from the prevention tool bottom face of the lamp fall prevention tool which concerns on Embodiment 2. FIG. It is a perspective view of the electric power feeding side socket in which the lamp fall prevention tool which concerns on Embodiment 2 was inserted. It is a rear view of the electric power feeding side socket which concerns on Embodiment 2 in the state in which the electric power feeding pin of a straight tube | pipe type lamp was inserted and the electric power feeding pin is located in an attachment position. It is a rear view of the electric power feeding side socket which concerns on Embodiment 2 in the state in which the electric power feeding pin of a straight tube | pipe type lamp | ramp is in a mounting position, and the lamp fall prevention tool is inserted.

Embodiment 1 FIG.
FIG. 1 is a perspective view of the lighting apparatus according to Embodiment 1. FIG. The lighting device 1 includes two long straight tube lamps 10 and a lighting fixture 20 to which the straight tube lamps 10 can be attached.

  FIG. 2 is a perspective view of the straight tube lamp according to the first embodiment. The straight tube lamp 10 includes a power supply side base 11 on one end side in the longitudinal direction and a holding side base 12 on the other end side. The power supply base 11 includes a pair of substantially L-shaped power supply pins 13. Each power supply pin 13 is provided so as to protrude in one of a shaft portion 13a protruding in the axial direction of the straight tube lamp 10 and a direction perpendicular to the axial direction of the straight tube lamp 10 from the tip of the shaft portion 13a. It consists of the edge part 13b. In addition, the holding-side base 12 includes a substantially T-shaped holding pin 14. The holding pin 14 is provided so as to project both in a shaft portion 14 a projecting in the axial direction of the straight tube lamp 10 and in a direction perpendicular to the axial direction of the straight tube lamp 10 from the tip of the shaft portion 14 a. It consists of an end 14b. The shapes of the power supply base 11, the holding base 12, the power supply pin 13, and the holding pin 14 are in accordance with the GX16t-5 base defined in JIS C7709-1 of the Japanese Industrial Standard (hereinafter referred to as JIS). It is.

  Further, the straight tube lamp 10 is provided in an internal space formed by the light-transmitting lamp cover 15, the metal heat sink 16, the lamp cover 15 and the heat sink 16, and the surface on the internal space side of the heat sink 16. And a plurality of light emitting elements 18 mounted on the substrate 17. The light emitting element 18 is a light emitting diode, and emits light when power is supplied. Circuit wiring for supplying power to the light emitting element 18 is configured on the substrate 17, and the circuit wiring on the substrate 17 is electrically connected to the power supply pins 13. Further, since the heat sink 16 has a role of radiating heat generated by light emission of the light emitting element 18, a metal material having high thermal conductivity is used.

  As shown in FIG. 1, the lighting fixture 20 includes a fixture main body 21, a reflection plate 22, two holding side sockets 30, and two power feeding side sockets 40. Moreover, the lighting fixture 20 has the lighting device which abbreviate | omitted illustration.

  The instrument main body 21 is a box shape with an elongated shape inside, and an opening is formed on one of the surfaces parallel to the longitudinal direction of the instrument main body 21. The appliance main body 21 is embedded and installed in the ceiling surface of the room, the opening surface of the appliance main body 21 faces the indoor side, and the room and the interior of the appliance main body 21 communicate with each other. A reflector 22 is provided inside the instrument body 21.

  The two holding side sockets 30 are respectively installed at one end of the instrument body 21 in the longitudinal direction. Further, the two power supply side sockets 40 are installed at the other end in the longitudinal direction of the instrument main body 21 so as to face the holding side socket 30 respectively. The straight tube lamp 10 is attached to the lighting fixture 20 by holding the holding pin 14 in the holding side socket 30 and holding the power supply pin 13 in the power supply side socket 40.

  The lighting device is electrically connected to a power source such as a commercial power source, and converts the power input from the power source into power suitable for lighting the straight tube lamp 10 and outputs the converted power. The output of the lighting device is supplied to the straight tube lamp 10 via the power supply side socket 40, and the straight tube lamp 10 is lit by the output of the lighting device. Note that, unlike the power supply side socket 40, the holding side socket 30 is not electrically connected to the lighting device. The lighting device is disposed in a space formed between the surface opposite to the opening of the instrument body 21 and the reflection plate 22.

FIG. 3 is a perspective view of the holding-side socket according to the first embodiment. FIG. 4 is an exploded perspective view of the holding-side socket according to the first embodiment. The holding-side socket 30 includes a box-type holding-side socket housing 31, a pair of holding tools 32, and a leaf spring 33. When the straight tube lamp 10 is mounted on the lighting fixture 20, the surface of the holding socket 30 that faces the holding base 12 of the straight tube lamp 10 is referred to as the front surface, and the surface opposite to the front surface is referred to as the back surface. . Further, when the holding side socket 30 is attached to the instrument body 21, the surface of the holding side socket 30 facing the opening of the instrument body 21 is referred to as a bottom surface, and the surface opposite to the bottom surface is referred to as a top surface. Further, surfaces perpendicular to the front surface and the top surface of the holding socket 30 are referred to as side surfaces. Note that the bottom surface side of the holding-side socket 30 of the first embodiment has an arc shape, and in the first embodiment, the arc-shaped circumferential portion is the bottom surface.

  The holding-side socket casing 31 includes a holding-side socket body 34 that is open on the back side, and a holding-side socket cover 35 that is attached to the back side of the holding-side socket body 34. The holding-side socket cover 35 is formed with a claw portion 35 a, and the holding-side socket cover 35 is attached to the back side of the holding-side socket body 34 when the claw portion 35 a is hooked on the holding-side socket body 34. Further, the holding-side socket body 34 and the holding-side socket cover 35 are formed of an insulating material such as thermoplastic resin polycarbonate or polybutylene terephthalate, for example.

  On both side surfaces of the holding-side socket body 34, an instrument body connecting portion 34a is formed, extending to the back side and having a substantially conical tip. Moreover, in the instrument main body 21, the insertion hole (illustration omitted) in which the instrument main body connection part 34a is inserted is formed in the position where the holding | maintenance side socket 30 is installed. The holding-side socket 30 is installed in the instrument main body 21 by inserting the instrument main body connection portion 34a into the insertion hole. The distal end of the instrument main body connection portion 34a has a substantially conical shape, and in order to insert the instrument main body connection portion 34a into the insertion hole, first, the outer side of the conical surface of both the instrument main body connection portions 34a is used as the wall portion of the insertion hole. Make contact. When the instrument main body connecting portion 34a is pushed back, the instrument main body connecting portion 34a is elastically deformed so that the conical surface is along the wall surface of the insertion hole, and the interval between the instrument main body connecting portions 34a is reduced. When the instrument main body connecting portion 34a is inserted into the insertion hole up to the conical bottom, the elastic deformation returns, and the interval between the instrument main body connecting portions 34a is increased. For this reason, the instrument main body connecting portion 34a does not fall out of the instrument main body 21. The leaf spring 33 is installed between the holding-side socket cover 35 and the conical portion at the tip of the instrument main body connection portion 34a. The leaf spring 33 urges the holding-side socket 30 toward the front side of the holding-side socket 30 when the holding-side socket 30 is connected to the appliance main body 21, and the holding-side socket 30 is in the longitudinal direction of the appliance main body 21. Preventing them from moving in parallel.

  On the front and bottom surfaces of the holding-side socket body 34, the holding pin 14 extends from the bottom side of the holding-side socket so that the longitudinal direction of the straight tube lamp 10 is parallel to the direction perpendicular to the front surface of the holding-side socket 30. A holding pin insertion groove 36 is formed so that it can be inserted into the surface side. The width L1 of the holding pin insertion groove 36 in the direction perpendicular to the side surface of the holding side socket body 34 is larger than the outer diameter of the shaft portion 14a of the holding pin 14, and the straight tube type lamp is formed at the end portion 14b of the holding pin 14. This is smaller than the length L2 (see FIG. 10) of the longest portion which is the longest portion in the direction perpendicular to the longitudinal direction.

  The holder 32 includes a fixed portion 32a and a spring portion 32b standing from the fixed portion 32a. The holder 32 is housed in the holding-side socket housing 31 so that the spring portion 32 b faces the holding pin insertion groove 36 when viewed from the back surface of the holding-side socket 30. The fixing portion 32a is positioned on the top surface side of the holding side socket 30 with respect to the spring portion 32b, and is fixed to the holding side socket housing 31 (see FIG. 10). The spring portion 32b is erected from the fixed portion 32a to the bottom surface side of the holding-side socket 30, and can be elastically deformed so that the interval between the opposing spring portions 32b is increased. The spring portion 32b is formed with a pin receiving portion 32c that is recessed in a concave shape.

FIG. 5 is a perspective view of the power supply side socket according to the first embodiment. FIG. 6 is an exploded perspective view of the power supply side socket according to the first embodiment. The power supply side socket 40 includes a box-type power supply side socket housing 41, a pair of energizing metal fittings 42, a rotor 43, and a leaf spring 44. When the straight tube lamp 10 is mounted on the lighting fixture 20, the surface of the power supply side socket 40 facing the power supply side cap 11 of the straight tube lamp 10 is referred to as the front surface, and the surface opposite to the front surface is referred to as the back surface. . The surface of the power supply side socket 40 facing the opening of the device main body 21 when the power supply side socket 40 is attached to the device main body 21 is referred to as a bottom surface, and the surface opposite to the bottom surface is referred to as a top surface. Further, surfaces perpendicular to the front surface and the top surface of the power supply side socket 40 are referred to as side surfaces. Note that the bottom surface side of the power supply side socket 40 of the first embodiment has an arc shape, and in the first embodiment, the arc-shaped circumferential portion is the bottom surface.

  The power supply side socket housing 41 includes a power supply side socket body 45 whose back side is opened, and a power supply side socket cover 46 attached to the back side of the power supply side socket body 45. A claw portion 46 a is formed in the power supply side socket cover 46, and the power supply side socket cover 46 is attached to the back side of the power supply side socket body 45 by the claw portion 46 a being hooked on the power supply side socket body 45. Further, the power supply side socket body 45 and the power supply side socket cover 46 are formed of an insulating material such as polycarbonate of thermoplastic resin or polybutylene terephthalate, for example.

  On both side surfaces of the power supply side socket body 45, as in the case of the holding side socket body 34, an instrument body connection portion 45 a that extends toward the back side and has a substantially conical tip is formed. Further, the leaf spring 44 is installed between the power supply side socket cover 46 and the conical portion at the tip of the instrument body connecting portion 45a. In the instrument main body 21, an insertion hole (not shown) into which the instrument main body connecting portion 45 a is inserted is formed at a position where the power supply side socket 40 is installed. The method of inserting the instrument main body connection portion 45a of the power supply side socket body 45 into the insertion hole is substantially the same as the method of inserting the instrument main body connection portion 34a of the holding side socket body 34 into the insertion hole.

  A circular power supply side socket opening 47 is formed on the front surface of the power supply side socket body 45. Further, on the front surface and the bottom surface of the power supply side socket body 45, the power supply pin 13 is connected to the power supply side socket opening 47 so that the longitudinal direction of the straight tube lamp 10 is parallel to the direction perpendicular to the front surface of the power supply side socket 40. The feed pin insertion groove 48 is formed so that can be inserted from the bottom surface side to the top surface side. The length in the direction perpendicular to the side surface of the power supply side socket 40 in the power supply pin insertion groove 48 is defined as a width L3 of the power supply pin insertion groove. Further, a substantially circular positioning rib 47a concentrically with the power supply side socket opening 47 is provided on the power supply side socket body 45 in a rearward direction from the power supply side socket body 45 (see FIG. 11). The diameter of the positioning rib 47 a is larger than the diameter of the power supply side socket opening 47. Although not shown, a wire insertion hole communicating with the inside of the power supply side socket housing 41 is formed on the top surface of the power supply side socket body 45.

  The rotor 43 includes a substantially disk-shaped base facing portion 43a having a diameter larger than that of the power supply side socket opening 47 and smaller than that of the positioning rib 47a, and a cylindrical portion 43b erected from one surface of the base facing portion 43a. Have. The rotor 43 is formed with a rotor-side pin insertion groove 43c formed from the base facing portion 43a to the middle of the cylindrical portion 43b. The rotor 43 is formed of an insulating material such as polycarbonate of thermoplastic resin or polybutylene terephthalate.

The rotor 43 is mouthpiece other surface the cylindrical portion 43b is not erected facing portion 43a comes into contact with the power supply-side socket body 45, the mouthpiece facing portion 43a is in the side feeder side socket opening 47 than the positioning ribs 47a It arrange | positions in the electric power feeding side socket housing | casing 41 so that it may be located. (See FIG. 11) By arranging in this way, the movement of the rotor 43 in the direction parallel to the front surface of the power supply side socket 40 is restricted by the positioning rib 47a. Further, the rotor 43 is perpendicular to the front surface of the power supply side socket 40 and is rotatable about a straight line passing through the center point of the power supply side socket opening 47 as a central axis. The power supply pin insertion groove 48 and the rotor side pin are rotated. The insertion groove 43 c can be aligned on a straight line in a direction perpendicular to the top surface of the power supply side socket 40.

  The current-carrying metal fitting 42 is made of a conductive material, and is made of copper in the first embodiment. The energizing metal fitting 42 includes a terminal portion 42a and a spring portion 42b erected from the terminal portion 42a. The current-carrying metal fitting 42 is housed in the power-feeding-side socket housing 41 so that the spring part 42b faces the center point of the power-feeding-side socket opening 47 when viewed from the back side of the power-feeding-side socket 40. The terminal portion 42a is positioned on the top surface side of the power supply side socket 40 relative to the spring portion 42b, and is fixed to the power supply side socket housing 41 (see FIG. 8). The spring part 42b is erected from the terminal part 42a to the bottom surface side of the power supply side socket 40, and can be elastically deformed so that the interval between the opposing spring parts 42b is increased. The spring portion 42b is formed with a pin receiving portion 42c that is recessed in a concave shape. Furthermore, the terminal portion 42 a is electrically connected to the lighting device via an electric wire inserted from the electric wire insertion hole of the power supply side socket body 45.

  FIG. 7 is a perspective view of the lamp fall prevention device according to Embodiment 1 as seen from the top surface of the prevention device. FIG. 8 is a perspective view of the lamp fall prevention device according to Embodiment 1 as seen from the bottom surface of the prevention device. FIG. 9 is a perspective view of the holding-side socket in which the lamp fall prevention device according to Embodiment 1 is inserted.

  The lamp fall prevention device 50 is made of a material having a high elastic limit such as rubber, and has a substantially rectangular parallelepiped shape as shown in FIGS. For the sake of explanation, of the surfaces of the lamp fall prevention device 50, when the lamp fall prevention device 50 is inserted into the holding pin insertion groove 36 of the holding side socket 30 as shown in FIG. The surface is referred to as a preventer bottom surface 50a, and the surface located on the top surface side is referred to as a preventer top surface 50b. Similarly, the surface located on the front side of the holding-side socket 30 is referred to as a prevention device front surface 50c, and the surface located on the back side of the holding-side socket 30 is referred to as prevention device back surface 50d. The two surfaces that are positioned are referred to as prevention device side surfaces 50e, respectively.

  A plurality of convex portions 51 are formed on the outer periphery of the lamp fall prevention device 50 including the prevention device front surface 50c, the prevention device back surface 50d, and the two prevention device side surfaces 50e. The length of the convex portion 51 in the direction perpendicular to the prevention device side surface 50e is longer than the width L1 of the holding pin insertion groove 36. Further, the length of the convex portion 51 in the direction perpendicular to the prevention device side surface 50e of the lamp drop prevention device 50 is referred to as a lateral width L4 of the lamp drop prevention device.

  Further, a shrinkage hole 52 is formed inside the lamp drop prevention tool 50, and the shrinkage hole 52 opens to the prevention tool top surface 50b side and communicates with an external space. Since the lamp fall prevention device 50 is made of a material having a high elastic limit, the lamp fall prevention device 50 is elastically deformed so that the contraction hole 52 is crushed in a state where a force for compressing the lamp fall prevention device 50 is applied to the convex portion 51. However, the lateral width L4 of the lamp fall prevention device 50 is shorter than that in a state where no force is applied. Further, when the lamp fall prevention device 50 is elastically deformed, a reaction force, which is a force for the lamp fall prevention device 50 to return to its original shape, is generated from the lamp fall prevention device 50.

  Further, the preventive tool bottom surface 50a is provided with a handle portion 53 that stands in the direction opposite to the preventive tool top surface 50b. A plurality of anti-slip protrusions 53 a are formed on the surface of the handle portion 53 having the largest surface area.

  As shown in FIG. 9, the lamp fall prevention device 50 can be inserted into the holding pin insertion groove 36 from the bottom surface side to the top surface side of the holding socket 30. Since the lateral width L4 of the lamp fall prevention tool is longer than the width L1 of the holding pin insertion groove 36, the lamp fall prevention tool 50 has the length of the lateral width L4 of the lamp fall prevention tool as the length of the width L1 of the holding pin insertion groove 36. It is elastically deformed so as to be shorter than that, and is inserted into the holding pin insertion groove 36 of the holding side socket 30. When the lamp drop prevention device 50 is inserted into the holding pin insertion groove 36 of the holding side socket 30, the lamp drop prevention device 50 is always elastically deformed. Power works. The reaction force increases the frictional force acting between the lamp drop prevention device 50 and the holding socket 30, and the lamp drop prevention device 50 does not easily move to the bottom side of the holding socket 30, and the lamp drop prevention device 50. Is difficult to come off from the holding pin insertion groove 36.

A method of mounting the straight tube lamp 10 in the first embodiment on the lighting fixture 20 will be described. FIG. 10 is a rear view of the holding-side socket according to the first embodiment in a state where the holding pin of the straight tube lamp is inserted and the holding pin is located at the insertion position. FIG. 11 is a rear view of the power supply side socket of the first embodiment in a state where the power supply pin of the straight tube lamp is inserted and the power supply pin is located at the insertion position. 10 and 11, for the purpose of illustration, the back side of the holding side socket 30, the back side of the power supply side socket 40, and the leaf springs 33 and 44 are not shown, and the inside of the holding side socket 30 or the power supply side socket 40 is illustrated. ing. The holding pin 14 is inserted into the holding side socket 30 through the holding pin insertion groove 36 (see FIG. 10). At this time, the longest portion of the end portion 14 b of the holding pin 14 is oriented parallel to the direction perpendicular to the top surface of the power supply side socket 40, and the holding pin 14 is inserted into the holding pin insertion groove 36 . Further, the power supply pin 13 is inserted into the power supply side socket 40 through the power supply pin insertion groove 48 (see FIG. 11). At this time, feeding pin insertion groove 48 and the rotor-side pin insertion groove 43c is Ru Tei aligned on a straight line in the direction perpendicular to the top surface of the power supply-side socket 40. Further, the two power supply pins 13 are aligned on a straight line in a direction perpendicular to the top surface of the power supply side socket 40, and the power supply pins 13 are inserted up to the rotor side pin insertion groove 43c. As described above, the position of the holding pin 14 immediately after inserting the holding pin 14 into the holding side socket 30 and the position of the power feeding pin 13 immediately after inserting the power feeding pin 13 into the power feeding side socket 40 are referred to as insertion positions. After the holding pin 14 is inserted into the holding-side socket 30 and the feeding pin 13 is inserted into the feeding-side socket 40, the straight tube lamp 10 is rotated about an axis parallel to the longitudinal direction of the straight tube lamp 10. . When the straight tube lamp 10 is rotated, the holding pin 14 and the power supply pin 13 are similarly rotated.

FIG. 12 is a rear view of the holding-side socket according to the first embodiment in a state where the holding pin of the straight tube lamp is inserted and the holding pin is located at the mounting position. FIG. 13 is a rear view of the power supply side socket according to the first embodiment in a state where the power supply pin of the straight tube lamp is inserted and the power supply pin is located at the mounting position. 12 and 13, for the sake of explanation, the back side of the holding side socket 30, the back side of the power feeding side socket 40, and the leaf springs 33 and 44 are not shown, and the inside of the holding side socket 30 or the power feeding side socket 40 is shown. ing. When the straight tube lamp 10 is rotated from the mounting position, the end portion 14b of the holding pin 14 and the spring portion 32b of the holding tool 32 come into contact with each other, and the shaft portion 13a of the power supply pin 13 and the spring portion 42b of the energizing bracket 42 are brought into contact. Abut. When further rotated from this state, the end portion 14b of the holding pin 14 elastically deforms the spring portion 32b in a direction in which the interval between the spring portions 32b of the pair of holding tools 32 is enlarged, and the shaft portion 13a of the power supply pin 13 is The spring portion 42b is elastically deformed in the direction in which the interval between the spring portions 42b of the energizing metal fitting 42 is increased. When the straight tube lamp 10 is rotated 90 degrees from the insertion position, the end portion 14b of the holding pin 14 and the shaft portion 13a of the power feed pin 13 are respectively connected to the pin receiving portion 32c of the holding tool 32 and the pin of the current-carrying metal fitting 42. It abuts on the receiving portion 42c (see FIGS. 12 and 13). Due to the clamping force of the spring portion 32 b, the end portion 14 b of the holding pin 14 is fitted into the pin receiving portion 32 c, and the holding pin 14 is held by the holding side socket 30. Further, the shaft portion 13 a of the power supply pin 13 is fitted into the pin receiving portion 42 c by the clamping force of the spring portion 42 b, and the power supply pin 13 is held by the power supply side socket 40. In this way, the straight tube lamp 10 is rotated 90 degrees from the insertion position, and the position of the holding pin 14 in which the end portion 14b of the holding pin 14 is fitted in the pin receiving portion 32c of the holding tool 32, and the pin of the energizing metal fitting 42. The positions of the power supply pins 13 in which the shaft portions 13a of the power supply pins 13 are fitted into the receiving portions 42c are referred to as mounting positions. At the mounting position, since the end portion 14b of the holding pin 14 and the shaft portion 13a of the power feed pin 13 are fitted in the pin receiving portions 32c and 42c, an external force that rotates the straight tube lamp 10 is a straight tube. Even when applied to the shape lamp 10, a force acts to guide the end portion 14b and the shaft portion 13a to the mounting position by the clamping force of the spring portions 32b and 42b, and the straight tube lamp 10 is difficult to rotate.

  In addition, since the power supply pin 13 is in contact with the power supply fitting 42 at the mounting position, the power supply pin 13 and the power supply fitting 42 are electrically connected. By electrically connecting the power supply pin 13 and the current-carrying metal fitting 42, the lighting device, one power-supply metal fitting 42, one power supply pin 13, the circuit wiring of the substrate 17, the light emitting element 18, the circuit wiring of the substrate 17, and the other A circuit through which a current flows is formed in the order of the power feeding pin 13, the other energizing metal fitting 42, and the lighting device. When the lighting device supplies electric power to the light emitting element 18 using the circuit, the straight tube lamp 10 is lit.

FIG. 14 is a rear view of the holding-side socket according to the first embodiment in a state where the holding pin of the straight tube lamp is in the mounting position and the lamp fall prevention tool is inserted. In FIG. 14, for the sake of explanation, the back side of the holding side socket and the leaf spring 33 are not shown, and the inside of the holding side socket 30 is shown. In a state where the holding pin 14 is located at the mounting position, the lamp drop prevention tool 50 is elastically deformed and inserted into the holding pin insertion groove 36 of the holding side socket 30, and the lamp drop prevention tool 50 closes the holding pin insertion groove 36. . Further, the prevention tool top surface 50 b of the inserted lamp fall prevention tool 50 comes into contact with the end portion 14 b of the holding pin 14. In the mounting position, the longest portion of the end portion 14 b of the holding pin 14 is oriented perpendicular to the insertion direction of the lamp drop prevention tool 50. If the straight tube lamp 10 is to be rotated with the lamp fall prevention tool 50 inserted into the holding pin insertion groove 36, the lamp fall prevention tool 50 prevents the end portion 14b of the holding pin 14 from rotating. Therefore, in order to rotate the straight tube lamp 10, it is necessary to move the lamp fall prevention tool 50 to the bottom surface side of the holding side socket 30. As described above, the reaction force generated from the lamp fall prevention tool 50 to the holding side socket 30 prevents the lamp fall prevention tool 50 from moving to the bottom surface side of the holding side socket 30. For this reason, even if an external force for rotating the straight tube lamp 10 is applied, the lamp drop prevention tool 50 prevents the rotation of the end portion 14b of the holding pin 14, so that the straight tube lamp 10 is more difficult to rotate.

  Further, as shown in FIG. 14, when the holding pin 14 of the straight tube lamp 10 is in the mounting position and the lamp drop prevention device 50 is inserted, the direction perpendicular to the side surface of the holding-side socket body 34 is prevented. The direction perpendicular to the tool side surface 50 e corresponds to a direction perpendicular to the longitudinal direction of the straight tube lamp 10 in which the holding pin 14 is inserted into the holding side socket 30 and the insertion direction of the holding pin 14. . For this reason, the width L1 of the holding pin insertion groove 36 is held in a direction perpendicular to the longitudinal direction of the straight tube lamp 10 in which the holding pin 14 is inserted into the holding side socket 30 and the insertion direction of the holding pin 14. This is the length of the pin insertion groove 36. Further, the lateral width L4 of the lamp drop prevention tool 50 is such that the lamp drop in the direction perpendicular to the longitudinal direction of the straight tube lamp 10 in which the holding pin 14 is inserted into the holding side socket 30 and the insertion direction of the holding pin 14 respectively. This is the length of the convex portion 51 of the prevention tool 50.

  When the straight tube lamp 10 is removed from the lighting fixture 20, the lamp drop prevention tool 50 is extracted from the holding pin insertion groove 36, and the straight tube lamp 10 is rotated to attach the positions of the holding pin 14 and the power supply pin 13. The holding pin 14 and the power supply pin 13 may be removed from the holding pin insertion groove 36 and the power supply pin insertion groove 48 by moving from the position to the insertion position.

  In the first embodiment, when the width L1 of the holding pin insertion groove 36 of the holding side socket 30 is compared with the lateral width L4 of the lamp fall prevention tool, the lateral width L4 of the lamp fall prevention tool 50 is longer. Since the lamp drop prevention tool 50 can be inserted into the holding pin insertion groove 36 by elastic deformation, the lamp drop prevention tool 50 inserts the holding pin insertion groove 36 into the holding pin insertion groove 36 by inserting it. It is possible to prevent the straight tube lamp 10 from falling.

  Further, since the top surface 50b of the lamp fall prevention tool 50 and the end 14b of the holding pin 14 come into contact with each other, the lamp fall prevention tool 50 can prevent the straight tube lamp 10 from rotating, so that external vibration such as vibration can be prevented. The feeding pin 13 is rotated from the mounting position due to the factor, and the feeding pin 13 and the current-carrying metal fitting 42 are electrically disconnected, and the straight tube lamp 10 is prevented from being turned off.

  Further, when the lamp fall prevention device 50 is pulled out from the holding pin insertion groove 36, the user can easily insert the lamp fall prevention device 50 by grasping the handle 53 and pulling it to the bottom side of the holding side socket 30. It can be extracted from the groove 36. In addition, since a plurality of anti-slip protrusions 53a are formed on the surface of the handle portion 53 having the largest surface area, it is difficult to slip when the handle portion 53 is pulled, and the lamp can be easily prevented from falling through the holding pin insertion groove 36. The tool 50 can be extracted.

  In addition, the straight tube lamp 10 can be prevented from dropping simply by inserting the lamp fall prevention tool 50 into the holding pin insertion groove 36, and the straight tube lamp 10 is not required to be removed from the lighting fixture 20. Can be prevented from falling.

  Furthermore, the holding pin 14 of the straight tube lamp 10 of the first embodiment has a shape conforming to the GX16t-5 base defined in JISC7709-1, and the dimensions are defined within the standard. Therefore, the width L1 of the holding pin insertion groove 36 in the direction perpendicular to the side surface of the holding socket body 34 is not greatly changed for each socket when the same type of holding pin 14 is used. Therefore, it is only necessary to design the lamp fall prevention device 50 corresponding to the type of the holding pin 14, and it is not necessary to design the lamp fall prevention device 50 for each holding side socket 30.

  In Embodiment 1, the holding pin 14, the holding side socket 30, the holding pin insertion groove 36, and the lamp drop prevention tool 50 are respectively the lamp pin, the lamp socket, the insertion groove, and the lamp drop prevention of the present invention. Applies to ingredients.

  In the lamp fall prevention device 50 of the first embodiment, a plurality of convex portions 51 are formed on the outer periphery of the lamp fall prevention device 50, and the contraction holes 56 are formed inside. The lateral width L4 of the lamp drop prevention tool may be longer than the width L1 of the holding pin insertion groove 36. For example, the convex portion is provided only on the prevention device side surface 50e, and the convex portion may not be provided on the prevention device front surface 50c and the prevention device rear surface 50d. Further, even if the protrusion side surface 50e is not provided with a convex portion, if the length of the side of the lamp drop prevention device 50 in the direction perpendicular to the prevention device side surface 50e is longer than the width L1 of the holding pin insertion groove 36. good.

Further, the shape of the lamp fall prevention device 50 of the first embodiment is a rectangular parallelepiped, but when inserted into the holding pin insertion groove 36, the maximum length in the direction perpendicular to the side surface of the holding side socket 30 is As long as the width L1 of the holding pin insertion groove 36 is longer, the shape of the lamp drop prevention tool 50 is not limited to a rectangular parallelepiped. For example, the lamp fall prevention device 50 may have a cylindrical shape, the bottom surface of the column corresponds to the top surface of the prevention device or the bottom surface of the prevention device, and the diameter of the bottom surface of the cylinder is longer than the width L1 of the holding pin insertion groove 36.

  Further, the lamp fall prevention device 50 of the first embodiment is made of a material having a high elastic limit such as rubber, and the contraction hole 52 is formed inside. However, the lamp fall prevention device 50 is not limited to this, and the lamp fall prevention device 50 is elastic. It is only necessary that the lateral width L4 of the lamp drop prevention device 50 can be made shorter than the width L1 of the holding pin insertion groove 36 by deformation. For example, the lamp fall prevention device 50 has a length in a direction perpendicular to the prevention device side surface 50e and a length in a direction perpendicular to the prevention device bottom surface 50a or a vertical direction to the prevention device front surface 50c. Since the elastic deformation can be performed so as to increase the length in the direction, the contraction hole 52 may not be provided.

  Further, the convex portion 51 of the lamp fall prevention device 50 may be provided separately, and only the convex portion 51 may be made of a material having a high elastic limit. In this case, the convex portion 51 is elastically deformed so that the width of the convex portion 51 in the direction perpendicular to the protective device side surface 50e is shortened, and the width of the convex portion 51 in the direction perpendicular to the top surface of the protective device is increased. The length of the convex part 51 of the width L4 of the prevention tool 50 becomes short.

  Further, the top surface 50b of the lamp fall prevention device 50 according to the first embodiment is such that the longest portion of the holding pin 14 is perpendicular to the insertion direction of the lamp fall prevention device 50 and the longest portion of the holding pin 14 It contacts, but it is not restricted to this. In a state where the lamp fall prevention tool 50 is in contact with the holding pin 14, if the holding pin 14 tries to rotate, a frictional force acts between the lamp fall prevention tool 50 and the holding pin 14, and the holding pin 14 becomes difficult to rotate. For this reason, even if the lamp fall prevention tool 50 only abuts on the holding pin 14, it is possible to obtain an effect that the holding pin 14 is difficult to rotate. Further, since the lamp fall prevention device 50 blocks the holding pin insertion groove 36 to prevent the holding pin 14 from falling out of the holding pin insertion groove 36, the lamp fall prevention device 50 is in contact with the holding pin 14. Even without this, the straight tube lamp 10 can be prevented from falling.

  In addition, the holding-side socket 30 of the first embodiment has the holding tool 32, but the lamp drop prevention tool 50 blocks the holding pin insertion groove 36 and prevents the holding pin 14 from falling out of the holding pin insertion groove 36. Therefore, the holding-side socket 30 may not have the holding tool 32.

Embodiment 2. FIG.
In the first embodiment, the configuration in which the straight tube lamp 10 is prevented from dropping by inserting the lamp drop prevention tool 50 into the holding pin insertion groove 36 has been described. However, in the second embodiment, the lamp drop is placed in the feed pin insertion groove 48. A configuration for preventing the straight tube lamp 10 from falling by inserting the prevention tool 60 will be described. Except for the shape of the rotor 43 and the lamp drop prevention tool 60, the illumination device 1 of the second embodiment is the same as the illumination device 1 of the first embodiment, and thus the description thereof is omitted. In the second embodiment, the energizing metal fitting 42 corresponds to the holding metal fitting of the present invention.

  FIG. 15 is an exploded perspective view of the power supply side socket according to the second embodiment. In the cylindrical portion 43b of the rotor 43 of the second embodiment, the prevention tool insertion grooves 43d are formed at two locations from the end portion not integrated with the base facing portion 43a of the cylindrical portion 43b to the base facing portion 43a side. Yes. The prevention tool insertion groove 43d is formed at a position 90 degrees from each rotor side pin insertion groove 43c along the circumference of the cylindrical portion 43b. Further, in a state where the power feed pin insertion groove 48 and the rotor side pin insertion groove 43c are aligned on a straight line in a direction perpendicular to the top surface of the power supply side socket 40, the direction perpendicular to the front surface of the power supply side socket is prevented. The length of the tool insertion groove 43d is defined as a width L5 of the prevention tool insertion groove 43d.

  FIG. 16 is a perspective view of the lamp fall prevention device according to Embodiment 2 as seen from the top surface of the prevention device. FIG. 17 is a perspective view of the lamp fall prevention device according to Embodiment 2 as seen from the bottom surface of the prevention device. FIG. 18 is a perspective view of the power supply side socket into which the lamp fall prevention tool according to Embodiment 2 is inserted.

The lamp fall prevention tool 60 is made of a material having a high elastic limit such as rubber, and has a substantially rectangular parallelepiped shape as shown in FIGS. For the sake of explanation, among the surfaces of the lamp drop prevention tool 60, the lamp drop prevention tool 60 is positioned on the bottom surface side of the power supply side socket 40 when inserted into the power supply pin insertion groove 48 of the power supply side socket 40 as shown in FIG. The surface is referred to as a preventer bottom surface 60a, and the surface located on the top surface side is referred to as a preventer top surface 60b. Further, called preventer front 60c the surface located on the front side of the same powered side socket 40, referred to the surface located on the rear side of the power supply-side socket 40 and the preventing device back 60d, the side surface of the power supply-side socket 40 The two positioned surfaces are referred to as prevention device side surfaces 60e, respectively.

A plurality of convex portions 61 are formed on the outer periphery of the lamp fall prevention device 60 including the prevention device front surface 60c, the prevention device back surface 60d, and the two prevention device side surfaces 60e. The length of the convex portion 61 in the direction perpendicular to the prevention device side surface 60e is longer than the width L3 of the power feed pin insertion groove 48. Further, the length of the convex portion 61 in the direction perpendicular to the prevention device side surface 60e of the lamp drop prevention device 60 is referred to as a lateral width L6 of the lamp drop prevention device 60.

  Further, the preventive tool bottom surface 60a is provided with a handle 62 that stands upright in a direction opposite to the preventive tool top surface 60b. A plurality of anti-slip protrusions 62a are formed on the surface of the handle portion 62 having the largest surface area.

  Further, a rotor insertion protrusion 63 is formed on the prevention tool top surface 60b so as to stand in a direction opposite to the prevention tool bottom surface 60a. Of the rotor insertion protrusion 63, the length in the direction perpendicular to the prevention device side surface 60e is shorter than the width L5 of the prevention device insertion groove. The length in the direction perpendicular to the prevention device side surface 60e is referred to as a lateral width L7 of the rotor insertion protrusion 63.

  A shrinkage hole 64 is formed inside the lamp fall prevention device 60. The shrink hole 64 is open on the preventive device top surface 60b side and communicates with an external space. Since the lamp fall prevention device 60 is made of a material having a high elastic limit, the lamp fall prevention device 60 is elastic so that the contraction hole 64 is crushed in a state where a force for compressing the lamp fall prevention device 60 is applied to the convex portion 61. Due to the deformation, the lateral width L6 of the lamp drop prevention tool 60 becomes shorter than that in a state where no force is applied. Further, when the lamp fall prevention device 60 is elastically deformed, a reaction force that is a force for the lamp fall prevention device 60 to return to its original shape is generated from the lamp fall prevention device 60.

  As shown in FIG. 18, the lamp drop prevention tool 60 can be inserted into the power supply pin insertion groove 48 of the power supply side socket 40. Since the lateral width L6 of the lamp drop prevention tool 60 is longer than the width L3 of the power supply pin insertion groove 48, the lamp fall prevention tool 60 uses the length of the lateral width L6 of the lamp fall prevention tool 60 as the width L3 of the power supply pin insertion groove 48. It is elastically deformed so as to be shorter, and is inserted into the feed pin insertion groove 48. Further, in the state where the lamp drop prevention tool 60 is inserted into the power supply pin insertion groove 48, the lamp drop prevention tool 60 is always elastically deformed, so that a reaction force is applied from the lamp drop prevention tool 60 to the power supply side socket 40. work. The reaction force increases the frictional force acting between the lamp drop prevention tool 60 and the power supply side socket 40, and the lamp drop prevention tool 60 does not easily move to the bottom surface side of the power supply side socket 40. As a result, the lamp The fall prevention tool 60 is difficult to be removed from the power supply pin insertion groove 48.

  A method for mounting the straight tube lamp 10 according to the second embodiment on the lighting fixture 20 will be described. In the second embodiment, the power feeding pin 13 is inserted into the power feeding side socket 40, the holding pin 14 is inserted into the holding side socket 30, and the power feeding pin 13 and the holding pin 14 are positioned from the insertion position to the mounting position. Since the procedure until the straight tube lamp 10 is rotated is substantially the same as that of the first embodiment, the description is omitted.

  FIG. 19 is a rear view of the power supply side socket according to the second embodiment in a state where the power supply pin of the straight tube lamp is inserted and the power supply pin is located at the mounting position. FIG. 20 is a rear view of the power supply side socket according to the second embodiment in a state where the power supply pin of the straight tube lamp is in the mounting position and the lamp fall prevention tool is inserted. 19 and 20, the back surface of the power supply side socket 40 and the leaf spring 44 are not shown, and the inside of the power supply side socket 40 is illustrated. As shown in FIG. 19, in a state where the power supply pin 13 is located at the mounting position, the prevention tool insertion groove 43 d formed in the rotor 43 is perpendicular to the power supply pin insertion groove 48 and the top surface of the power supply side socket 40. Are aligned on a straight line.

In a state where the power supply pin 13 is located at the mounting position, the lamp drop prevention tool 60 is elastically deformed and inserted into the power supply pin insertion groove 48 of the power supply side socket 40, and the lamp drop prevention tool 60 closes the holding pin insertion groove 36. . Further, the rotor insertion protrusion 63 of the inserted lamp fall prevention tool 60 is inserted into a prevention tool insertion groove 43 d formed in the rotor 43. When the straight tube lamp 10 is to be rotated with the lamp fall prevention tool 60 inserted, the rotor insertion protrusion 63 prevents the rotation of the rotor 43. For this reason, in order to rotate the straight tube lamp 10, it is necessary to move the lamp drop prevention tool 60 to the bottom surface side of the power supply side socket 40 and to extract the rotor insertion protrusion 63 from the prevention tool insertion groove 43d. As described above, the lamp drop prevention tool 60 is restrained from moving to the bottom surface side of the power supply side socket 40 by the reaction force generated from the lamp drop prevention tool 60 to the power supply side socket 40. For this reason, the straight tube lamp 10 is difficult to rotate because the lamp drop prevention tool 60 prevents the rotation of the rotor 43 when the straight tube lamp 10 rotates.

  Further, as shown in FIG. 20, when the power supply pin 13 of the straight tube lamp 10 is in the mounting position and the lamp drop prevention tool 60 is inserted, the direction perpendicular to the side surface of the power supply side socket body 45 and the prevention are prevented. The direction perpendicular to the side surface 60e corresponds to a direction perpendicular to the longitudinal direction of the straight tube lamp 10 in which the power feeding pin 13 is inserted into the power feeding side socket 40 and the direction in which the power feeding pin 13 is inserted. . For this reason, the width L3 of the power feed pin insertion groove 48 is such that the power supply in the direction perpendicular to the longitudinal direction of the straight tube lamp 10 in which the power feed pin 13 is inserted into the power feed side socket 40 and the direction in which the power feed pin 13 is inserted. This is the length of the pin insertion groove 48. Further, the lateral width L6 of the lamp drop prevention tool 60 is such that the lamp drops in directions perpendicular to the longitudinal direction of the straight tube lamp 10 in which the power supply pin 13 is inserted into the power supply side socket 40 and the insertion direction of the power supply pin 13, respectively. This is the length of the convex portion 61 of the prevention tool 60. The lateral width L7 of the rotor insertion projection 63 is designed to prevent the lamp from dropping in the direction perpendicular to the longitudinal direction of the straight tube lamp 10 in which the power supply pin 13 is inserted into the power supply side socket 40 and the direction in which the power supply pin 13 is inserted. This is the length of the rotor insertion protrusion 63 of the tool 60.

  When the straight tube lamp 10 is removed from the lighting fixture 20, the lamp drop prevention tool 60 is removed from the power supply pin insertion groove 48, and the straight tube lamp 10 is rotated to attach the positions of the holding pin 14 and the power supply pin 13. The holding pin 14 and the power supply pin 13 may be removed from the holding pin insertion groove 36 and the power supply pin insertion groove 48 by moving from the position to the insertion position.

  In the second embodiment, when the width L3 of the power supply pin insertion groove 48 of the power supply side socket 40 is compared with the horizontal width L6 of the lamp fall prevention device 60, the lateral width L6 of the lamp fall prevention device 60 is longer. Since the lamp drop prevention tool 60 can be inserted into the power supply pin insertion groove 48 by elastically deforming the power supply 60, the lamp drop prevention tool 60 is inserted into the power supply pin insertion groove 48 by inserting the lamp drop prevention tool 60 into the power supply pin insertion groove 48. 48 can be blocked and the straight tube lamp 10 can be prevented from falling.

  Further, since the rotor insertion projection 63 of the lamp fall prevention tool 60 is inserted into the prevention tool insertion groove 43d formed in the rotor 43, and the lamp fall prevention tool 60 prevents the rotation of the straight tube lamp 10, vibration, etc. The external power supply pin 13 is rotated from the mounting position, the power supply pin 13 and the current-carrying metal fitting 42 are electrically disconnected, and the straight tube lamp 10 is prevented from being turned off. Further, since the lateral width L7 of the rotor insertion protrusion is shorter than the width L5 of the prevention tool insertion groove, the rotor insertion protrusion 63 can be smoothly inserted without being elastically deformed.

  Further, the straight tube lamp 10 can be prevented from dropping by simply inserting the lamp drop prevention tool 60 into the power supply pin insertion groove 48, and the straight tube lamp 10 is not required to be removed from the lighting fixture 20. Can be prevented from falling.

  Further, similarly to the lamp fall prevention device 50 of the first embodiment, the lamp fall prevention device 60 includes the handle 62 and the anti-slip protrusion 62a, so that the lamp fall prevention device 60 can be easily attached to the power supply pin. It can be extracted from the insertion groove 48. Further, the power supply pin 13 of the straight tube lamp 10 has a shape conforming to the GX16t-5 cap defined in JISC7709-1, and the dimensions are determined within the standard. It is only necessary to design the lamp fall prevention tool 60, and it is not necessary to design the lamp fall prevention tool 60 for each power supply side socket 40.

  In the second embodiment, the power supply pin 13, the power supply side socket 40, the power supply pin insertion groove 48, and the lamp drop prevention tool 60 are respectively the lamp pin, the lamp socket, the insertion groove, and the lamp drop prevention of the present invention. Applies to ingredients.

  In the lamp fall prevention device 60 according to the second embodiment, a plurality of convex portions 61 are formed on the outer periphery of the lamp fall prevention device 60 and a contraction hole 64 is formed on the inside. The width L6 of the lamp drop prevention tool 60 may be longer than the width L3 of the power supply pin insertion groove 48. As such a lamp fall prevention device 60, for example, the convex portion 61 is provided only on the prevention device side surface 60e, and the convex portion 61 is not provided on the prevention device front surface 60c and the prevention device back surface 60d. good. Further, even if the preventer side surface 60e is not provided with a convex portion, if the length of the side in the direction perpendicular to the protector side surface 60e of the lamp drop preventing device 60 is longer than the width L3 of the power supply pin insertion groove 48, good.

  Furthermore, although the shape of the lamp drop prevention tool 60 of the second embodiment is a rectangular parallelepiped, when inserted into the power supply pin insertion groove 48, the maximum length in the direction perpendicular to the side surface of the power supply side socket 40 is As long as the width L3 of the power feed pin insertion groove 48 is longer, the shape of the lamp drop prevention tool 60 is not limited to a rectangular parallelepiped. For example, the lamp fall prevention tool 60 whose shape is a columnar shape, the bottom surface of the cylinder corresponds to the prevention device top surface 60b or the prevention device bottom surface 60a, and the diameter of the bottom surface of the cylinder is longer than the width L3 of the power supply pin insertion groove 48. good.

Further, the lamp fall prevention device 60 of the second embodiment is made of a material having a high elastic limit such as rubber, and the contraction hole 64 is formed inside. However, the lamp fall prevention device 60 is not limited to this, and the lamp fall prevention device 60 is elastic. It is only necessary that the lateral width L6 of the lamp drop prevention tool 60 can be made shorter than the width L3 of the power supply pin insertion groove 48 by deformation. For example, the lamp fall prevention device 60 has a length in a direction perpendicular to the prevention device side surface 60e and a length in a direction perpendicular to the prevention device bottom surface 60a or a vertical direction to the prevention device front surface 60c. Since the elastic deformation can be performed so as to increase the length in the direction, the contraction hole 64 may not be provided. Furthermore, the convex part 61 may be provided separately from the lamp fall prevention device, and only the convex part 61 may be made of a material having a high elastic limit. This case is a direction perpendicular width preventing device side 60e of the convex portion 61 is short, the convex portion 61 as the direction perpendicular width preventer top surface 60 b of the protrusion 61 becomes longer elastically deformed, The length of the convex portion 61 having the lateral width L6 of the lamp fall prevention tool is shortened.

  In addition, a rotor insertion protrusion 63 is formed on the top surface 60b of the lamp fall prevention device 60 of the second embodiment, and a prevention device insertion groove 43d is formed on the rotor 43. Not limited to. For example, even when the rotor insertion protrusion 63 and the prevention tool insertion groove 43d are not formed, the prevention tool top surface 60b of the lamp drop prevention tool 60 and the cylindrical part 43b of the rotor 43 are in contact with each other. Thus, when the rotor 43 rotates, a frictional force is generated between the lamp fall prevention tool 60 and the rotor 43. The rotation of the straight tube lamp 10 can be prevented by the frictional force. Furthermore, even if the rotor insertion protrusion 63 and the prevention tool insertion groove 43d are not formed and the lamp drop prevention tool 60 and the rotor 43 are not in contact with each other, the lamp drop prevention tool 60 is connected to the power supply pin. By closing the insertion groove 48, the power supply pin 13 is prevented from falling off from the power supply pin insertion groove 48, and the straight tube lamp 10 can be prevented from dropping.

  Further, in the second embodiment, the lamp fall prevention tool 50 of the first embodiment may be inserted into the holding pin insertion groove 36 of the holding socket 30. In this case, since it is possible to prevent the straight tube lamp 10 from dropping in both the holding side socket 30 and the power supply side socket 40, a lamp drop prevention tool is provided only on either the holding side socket 30 or the power supply side socket 40. The straight tube lamp 10 can be prevented from dropping more reliably than when inserted.

  Further, in the straight tube lamp 10 according to the first and second embodiments, the light emitting element 18 includes the light emitting element 18 that is a light emitting diode, the substrate 17, and the heat sink 16, but is not limited thereto. . For example, the light emitting element may be an organic EL element using organic electroluminescence (hereinafter referred to as organic EL). Further, the straight tube lamp 10 may be a fluorescent lamp conventionally used for a straight tube lamp.

In addition, the shapes of the power supply base 11, the holding side base 12, the power supply pin 13, and the holding pin 14 according to the first and second embodiments are in accordance with the GX16t-5 base defined in JIS C7709-1. Not limited to this . The present invention can be applied to any lighting device in which the lamp pin of the straight tube lamp 10 is inserted into the socket through the pin insertion groove formed in the socket and held in the socket. The shape of the base and the pin of the straight tube lamp may be a G13 base or a G5 base defined by JISC7709-1.

DESCRIPTION OF SYMBOLS 1 Illuminating device, 10 Straight tube type lamp, 11 Feeding side base, 12 Holding side base, 13 Feeding pin, 13a Feeding pin shaft part, 13b Feeding pin end part, 14 Holding pin, 14a Holding pin shaft part, 14b Holding pin end Part, 15 lamp cover, 16 heat sink, 17 substrate, 18 light emitting element, 20 lighting fixture, 21 fixture body, 22 reflector, 30 holding side socket, 31 holding side socket housing, 32 holding fixture, 32a fixing part, 32b spring Part, 32c pin receiving part, 33 leaf spring , 34 holding side socket body, 34a instrument body connecting part, 35 holding side socket cover, 35a claw part, 36 holding pin insertion groove, 40 feeding side socket, 41 feeding side socket housing , 42 energizing metal fittings, 42a terminal portion, 42b spring portion, 42c pin receiving portion, 43 rotor, 43a mouthpiece facing portion, 43b cylindrical portion, 43 c Rotor side pin insertion groove, 43d Prevention tool insertion groove, 44 Leaf spring , 45 Power supply side socket body, 45a Instrument body connection part, 46 Power supply side socket cover, 46a Claw part, 47 Power supply side socket opening part, 47a Positioning rib , 48 Power supply pin insertion groove, 50 Lamp fall prevention device, 50a Prevention device bottom surface, 50b Prevention device top surface, 50c Prevention device front surface, 50d Prevention device back surface, 50e Prevention device side surface, 51 Convex portion, 52 Contraction hole, 53 Handle , 53a Non-slip projection, 60 Lamp fall prevention device, 60a Prevention device bottom surface, 60b Prevention device top surface, 60c Prevention device front surface, 60d Prevention device back surface, 60e Prevention device side surface, 61 Convex part, 62 Handle part, 62a Slip Stop projection, 63 Rotor insertion projection, 64 Shrink hole

Claims (8)

A lamp pin formed in the lamp socket and provided at the end in the longitudinal direction of the elongated straight tube lamp is inserted into an insertion groove inserted in an insertion direction perpendicular to the longitudinal direction of the straight tube lamp. ,
In the direction perpendicular to the longitudinal direction of the straight tube lamp and the insertion direction of the lamp pin in the insertion groove, the lateral width is longer than the width of the insertion groove,
The lateral width is elastically deformed to be shorter than the width of the insertion groove and inserted into the insertion groove ,
The lamp fall prevention tool supported in the insertion groove only by the portion having the lateral width pressing the inner wall of the insertion groove by a restoring force of elastic deformation . The lamp fall prevention tool according to claim 1, further comprising a handle portion erected in a direction opposite to the insertion direction of the lamp fall prevention tool. Insertion groove lamp pins provided on the longitudinal end portion of the straight tube lamp long shape is inserted in a vertical insertion direction to the longitudinal direction of the straight tube lamp is formed, inserted from said insertion groove A lamp socket for holding the lamp pin,
In a direction perpendicular to the longitudinal direction of the straight tube lamp and the insertion direction of the lamp pin, the width is longer than the width of the insertion groove and elastic so that the width is shorter than the width of the insertion groove. A lamp drop prevention tool supported in the insertion groove by only being deformed and inserted into the insertion groove, and the portion having the lateral width pressing the inner wall of the insertion groove by a restoring force of elastic deformation ,
Lighting equipment with A straight tube lamp having a long shape and provided with a lamp pin at the end in the longitudinal direction;
An insertion groove is formed in which the lamp pin is inserted in an insertion direction perpendicular to the longitudinal direction of the straight tube lamp, and a lamp socket for holding the lamp pin inserted from the insertion groove;
In a direction perpendicular to the longitudinal direction of the straight tube lamp and the insertion direction of the lamp pin, the width is longer than the width of the insertion groove and elastic so that the width is shorter than the width of the insertion groove. A lamp drop prevention tool supported in the insertion groove by only being deformed and inserted into the insertion groove, and the portion having the lateral width pressing the inner wall of the insertion groove by a restoring force of elastic deformation ,
A lighting device comprising: The lighting device according to claim 4, wherein the lamp fall prevention tool abuts on the lamp pin. The illuminating device according to claim 5, wherein a longest portion of the lamp pins, which is a longest portion in a direction perpendicular to a longitudinal direction of the straight tube lamp, is perpendicular to an insertion direction of the lamp pins. A rotor-side pin insertion groove that is housed in the lamp socket, rotates about a central axis parallel to the longitudinal direction of the straight tube lamp, and into which the lamp pin inserted from the insertion groove is inserted, and the rotor It has a rotor in which a prevention tool insertion groove formed at a position of 90 degrees around the central axis from the side pin insertion groove is formed,
The lighting device according to claim 4, wherein the lamp fall prevention device is provided with a rotor insertion protrusion that is erected in the insertion direction of the lamp pin and is inserted into the prevention device insertion groove. The illumination according to claim 7, wherein a width of the prevention tool insertion groove is longer than a lateral width of the rotor insertion protrusion in a direction perpendicular to a longitudinal direction of the straight tube lamp and an insertion direction of the lamp pin. apparatus.

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