JP5705011B2 - Lamp socket and lighting fixture - Google Patents

Description

  The present invention relates to a lamp socket to which a straight tube lamp is detachably attached.

As the structure of the lamp socket, for example, there are a structure in which the lamp is mounted by rotating, and a structure in which the lamp is mounted by sliding.
The shape of the base of the straight tube lamp is defined, for example, in JEL (Japan Light Bulb Industry Association Standard) 907. For example, JEL907: 2010 Addendum 3 defines Gx16t-5A type and Gx16t-5B type as bases of straight tube lamps having light sources such as LEDs that are lit by direct current. The Gx16t-5A type base has two electrodes for supplying power to the straight tube lamp. The Gx16t-5B type base has a ground electrode for grounding the straight tube lamp. One straight tube lamp is provided with a Gx16t-5A-type base at one end and a Gx16t-5B-type base at the other end.

JP 11-345665 A JP 2005-108594 A JP-A-2005-44718

Thus, when the shapes of the caps provided at both ends of one straight tube lamp are different, and one is for power feeding and the other is for grounding, the order in which the caps are attached to the socket is important. In other words, if the power supply base is attached to the socket first, power is supplied to the straight tube lamp without the straight tube lamp being grounded, and an operator who is trying to install the straight tube lamp can be electrocuted. There is sex.
The present invention has been made, for example, in order to solve the above-described problems, and an object thereof is to prevent an operator who installs a straight tube lamp from receiving an electric shock.

  The lamp socket according to the present invention is a lamp socket that engages with a base provided at one end of a straight tube type lamp, an electrode contact portion that comes into contact with and electrically connects to an electrode provided in the base, and the straight tube type When the lamp is inclined at a predetermined angle or more with respect to a predetermined direction, the lamp has an oblique contact prevention portion that contacts the base and prevents the electrode and the electrode contact portion from contacting each other. .

  According to the lamp socket according to the present invention, when the straight tube lamp is inclined, the electrode does not come into contact with the electrode contact portion, so that the operator can be prevented from receiving an electric shock.

FIG. 3 is a perspective view illustrating an appearance of a lighting fixture 800 according to Embodiment 1. The perspective view and partial expansion perspective view which show the external appearance of the straight tube | pipe type lamp 300 attached to the lighting fixture 800 in Embodiment 1. FIG. FIG. 3 is an exploded perspective view of the lamp socket 100 and the waterproof cap 400 in the first embodiment. FIG. 3 is an exploded perspective view of the lamp socket 200 and the waterproof cap 400 in the first embodiment. FIG. 5 shows a procedure for attaching straight tube lamp 300 to lighting apparatus 800 in the first embodiment. The figure which shows the state which is going to attach the straight tube | pipe lamp 300 to the lighting fixture 800 in Embodiment 1 in the incorrect procedure. FIG. 4 is an enlarged perspective view showing a state where the straight tube lamp 300 is attached to the lighting fixture 800 in the first embodiment in a wrong procedure. FIG. 6 is a perspective view showing an appearance of a lamp socket 100 according to a second embodiment. The front view and sectional drawing which show the structure of the lamp socket 200 in Embodiment 3. FIG. FIG. 10 is a diagram showing the function of a stopper 230 in the third embodiment. FIG. 10 is a diagram showing the function of a stopper 230 in the third embodiment.

Embodiment 1 FIG.
The first embodiment will be described with reference to FIGS.

FIG. 1 is a perspective view showing an external appearance of a lighting fixture 800 in this embodiment.
The lighting fixture 800 has a waterproof function. The lighting fixture 800 includes, for example, a lighting fixture body 810, two lamp sockets 100 and 200, and two waterproof caps 400.
The luminaire main body 810 has a rectangular parallelepiped shape, for example, and incorporates a power supply device (not shown) that supplies power to the straight tube lamp 300. The two lamp sockets 100 and 200 fix the straight tube lamp 300 detachably. The lamp socket 100 (grounding side socket) is provided at one end in the longitudinal direction of the lighting fixture body 810. The lamp socket 200 (power supply side socket) is provided at the other end of the lighting fixture body 810. The waterproof cap 400 covers the engagement portion between the lamp sockets 100 and 200 and the straight tube lamp 300 and prevents water from entering.

FIG. 2 is a perspective view and a partially enlarged perspective view showing the external appearance of a straight tube lamp 300 attached to the lighting fixture 800 in this embodiment.
The straight tube lamp 300 includes, for example, a lamp body 330 and two bases 310 and 320.
The lamp body 330 has a substantially cylindrical shape and incorporates a light source such as an LED.
The base 310 (ground side base) is a Gx16t-5B type ground side base defined in JEL907: 2010 Supplement 3. The base 310 has a base body 311, a base end 312, and an electrode 313. The base body 311 has a cylindrical side plate shape that is substantially coaxial with the lamp body 330. The base end portion 312 (lamp receiving portion) has a substantially circular plate shape and forms the bottom surface of the base body portion 311. The electrode 313 (ground pin) is provided substantially at the center of the base end 312. The electrode 313 is electrically connected to a metal part such as a heat radiating fin of the lamp body 330. The electrode 313 has an electrode arm portion 315 and an electrode tip portion 314. The electrode arm portion 315 (cylindrical portion) has a substantially cylindrical shape that is substantially coaxial with the lamp body 330. The electrode tip portion 314 (elliptical portion) is provided at the tip of the electrode arm portion 315 and has a substantially oval disk shape. The short diameter of the electrode tip 314 is larger than the diameter of the electrode arm 315.
The base 320 (power supply side base) is a Gx16t-5A type power supply side base defined in JEL907: 2010 Supplement 3. The base 320 has a base body part 321, a base end part 322, a convex part 326, and two electrodes 323. The base body 321 has a substantially cylindrical side plate shape that is substantially coaxial with the lamp body 330. The base end portion 322 (lamp receiving portion) is a part of a disc that forms the bottom surface of the base body portion 321, and is divided into two portions having substantially the same shape by a convex portion 326. The convex portion 326 (lamp hook portion) has a shape in which a range of a predetermined width centered on the diameter of the disk forming the bottom surface of the base end 322 protrudes in the longitudinal direction of the lamp main body 330 from the base end 322. is there. The central axis of the convex portion 326 (the diameter of the bottom surface of the base end portion 322) is substantially parallel to the major diameter of the electrode tip portion 314. The two electrodes 323 (feeding pins) are provided substantially symmetrically with respect to the center of the convex portion 326. Each electrode 323 has an electrode arm portion 325 and a convex portion 326. The electrode arm portion 325 (shaft portion) has a substantially rectangular plate shape and extends in the longitudinal direction of the lamp body 330. The electrode arm portion 325 is substantially perpendicular to the central axis of the convex portion 326. The electrode tip portion 324 (prevention portion) has a substantially rectangular plate shape, and the tip end of the electrode arm portion 325 is bent in an L shape toward the outside. The electrode tip 324 is substantially perpendicular to the axis of the lamp body 330.

FIG. 3 is an exploded perspective view of the lamp socket 100 and the waterproof cap 400 in this embodiment.
The lamp socket 100 (second lamp socket) includes, for example, a socket body 110, a lamp receiver 120, a grounding metal 150, and a waterproof rubber 190.
The socket body 110 includes a screw cylinder portion 113 and leg portions 112. The screw cylinder portion 113 has a substantially cylindrical plate shape with a screw shape formed on the outside. The leg portion 112 is a portion for fixing the socket main body 110 to the lighting fixture main body 810 and has a mounting plate insertion portion 111. The mounting plate insertion portion 111 is engaged with the lighting fixture body 810 to fix the socket body 110 to the lighting fixture body 810. The lamp receiving portion 120 (movable portion) is provided inside the screw tube portion 113 so as to be movable in a direction substantially parallel to the axial direction of the screw tube portion 113. The lamp receiver 120 is substantially disk-shaped and has a pin insertion hole 124. The pin insertion hole 124 is a substantially oval through hole provided at substantially the center of the lamp receiving portion 120, and the electrode tip 314 of the base 310 can be inserted therethrough. The ground metal fitting 150 (earth power contact portion) is formed of a material having elasticity and conductivity such as a leaf spring. The grounding metal 150 abuts on the lamp receiver 120 and exerts stress against the movement of the lamp receiver 120 in the axial direction. The grounding metal 150 is in contact with and electrically connected to the electrode tip 314 inserted through the pin insertion hole 124. The grounding metal 150 has, for example, a quick connection terminal structure and is electrically connected to an electric wire (not shown). The waterproof rubber 190 penetrates the electric wire connected to the grounding metal 150, engages with an electric wire insertion hole (not shown) provided in the socket main body 110, and water enters the screw cylinder portion 113. prevent. The electric wire connected to the grounding metal 150 is drawn out of the screw cylinder portion 113 through the electric wire insertion hole, and is grounded, for example, by being screwed to the lighting fixture body 810.
The waterproof cap 400 includes, for example, a waterproof cap body 440, a waterproof ring 420, and a waterproof packing 430. The waterproof cap body 440 has a screw shape that is screwed into the screw cylinder portion 113 inside. When the end of the straight tube lamp 300 is passed through the waterproof cap body 440, the waterproof ring 420, and the waterproof packing 430, and the waterproof cap body 440 is screwed with the screw cylinder portion 113, the waterproof cap body 440 and the socket body 110 are connected. Since the waterproof ring 420 and the waterproof packing 430 are sandwiched therebetween, the straight tube lamp 300 and the screw cylinder portion 113 are in close contact with the waterproof ring 420 and the waterproof packing 430, thereby preventing water from entering.

FIG. 4 is an exploded perspective view of the lamp socket 200 and the waterproof cap 400 in this embodiment.
The waterproof cap 400 is the same as that on the lamp socket 100 side.
The lamp socket 200 includes, for example, a socket body 210, a lamp receiver 220, two power supply fittings 250, and two waterproof rubbers 290.
The socket main body 210 includes a screw cylinder portion 213 and a leg portion 212. The screw cylinder portion 213 has a substantially cylindrical shape with a screw shape formed on the outside. The leg portion 212 is a portion for fixing the socket main body 210 to the lighting fixture main body 810 and has a mounting plate insertion portion 211. The mounting plate insertion portion 211 is engaged with the lighting fixture body 810 to fix the socket body 210 to the lighting fixture body 810. The lamp receiving part 220 is provided inside the screw cylinder part 213. The lamp receiving part 220 (covering part) is substantially disk-shaped and has two pin grooves 225, two pin insertion holes 224, and a lamp holding part 226. The two pin grooves 225 (engagement holes) are substantially rectangular through holes provided side by side in the horizontal direction at substantially the center of the lamp receiver 220. Since the pin groove 225 is narrow, the electrode arm portion 325 of the base 320 can be inserted, but the electrode tip portion 324 cannot be inserted. Therefore, the electrode 323 cannot be directly inserted into the pin insertion hole 224, or the electrode 323 cannot be directly extracted from the pin insertion hole 224. Each pin insertion hole 224 (a temporary pin insertion portion, an insertion hole) is a through hole provided continuously on the side closer to the lighting fixture body 810 with respect to the pin groove 225. The pin insertion hole 224 is wider than the pin groove 225, and the electrode arm portion 325 and the electrode tip portion 324 can be inserted therethrough. When the straight tube lamp 300 is attached, the two electrode tip portions 324 are respectively inserted into the pin insertion holes 224, the base 320 is slid, and the electrode arm portions 325 are engaged with the pin grooves 225. On the contrary, when the straight tube lamp 300 is removed, the base 320 is slid and the electrode tip 324 is extracted from the pin insertion hole 224. The lamp holding portion 226 is a convex portion provided to support the convex portion 326 when the electrode arm portion 325 is engaged with the pin groove 225. The lamp holding part 226 has a gap on the extension line of the pin groove 225 and is divided into three parts so that the straight tube lamp 300 can be easily attached. The gap of the lamp holder 226 has a width through which the electrode tip 324 passes.
The two power supply fittings 250 (electrode contact portions) are formed of a conductive material. Each power supply fitting 250 is in electrical contact with the electrode 323 engaged with the pin groove 225. The portion where the power supply fitting 250 comes into contact with the electrode 323 does not come into contact with the electrode 323 just by inserting the electrode tip 324 into the electrode tip 324, but the electrode 323 engages with the pin groove 225 by sliding the base 320. It contacts the electrode 323 for the first time. The portion where the power supply fitting 250 comes into contact with the electrode 323 has, for example, a cross-sectional C shape opened in the direction in which the electrode 323 slides, and serves as a guide. Each power supply fitting 250 has, for example, a quick connection terminal structure, and is electrically connected to a different electric wire (not shown). The two waterproof rubbers 290 pass through the electric wires connected to the grounding metal 150, engage with electric wire insertion holes (not shown) provided in the socket body 210, and have water in the screw cylinder portion 213. To prevent infiltration. The electric wire connected to the power supply fitting 250 is drawn out of the screw cylinder portion 213 through the electric wire insertion hole and connected to the power supply device (power supply output portion).

FIG. 5 is a diagram showing a procedure for attaching the straight tube lamp 300 to the lighting fixture 800 in this embodiment.
The distance between the two lamp sockets 100 and 200 is shorter than the length of the straight tube lamp 300.
First, the operator presses the base 310 of the straight tube lamp 300 against the lamp receiver 120 of the lamp socket 100 and pushes the lamp receiver 120. At this time, if the electrode 323 is not correctly engaged with the pin insertion hole 124, the base end portion 312 of the base 310 hits the screw tube portion 113 of the socket main body 110, and the lamp receiving portion 120 cannot be pushed in. For this reason, the electrode 323 and the grounding metal 150 are in contact with each other and are reliably electrically connected.
Next, the operator lifts the base 320 and passes the electrode 323 through the gap provided in the lamp holding part 226 of the lamp receiving part 220. If the lamp receiving part 120 is not sufficiently pushed in, the electrode 323 hits the lamp receiving part 220 and does not pass through the gap of the lamp holding part 226.
When the electrode 323 reaches the position of the pin insertion hole 224, the operator relaxes the force that has pushed the lamp receiver 120 and inserts the electrode tip 324 into the pin insertion hole 224. The lamp receiver 120 moves due to the elasticity of the grounding metal 150 and keeps the state in contact with the electrode 313.
When the operator slides the base 320 downward, the electrode 323 engages with the pin groove 225, and the electrode 323 and the power supply fitting 250 come into contact with each other to be electrically connected.

  By attaching the straight tube lamp 300 in such a procedure, first, the electrode 313 is in contact with the grounding metal 150 and grounded, and then the electrode 323 is in contact with the power supply metal 250 and power is supplied. It is possible to prevent a person from accidental electric shock.

  When removing the straight tube lamp 300, the procedure is reversed. For this reason, after the electrode 323 is separated from the power supply fitting 250 and the supply of electric power is stopped, the electrode 313 is separated from the grounding fitting 150. As a result, it is possible to prevent the operator from receiving an electric shock by mistake.

FIG. 6 is a diagram showing a state in which the straight tube lamp 300 is about to be attached to the lighting fixture 800 in this embodiment in an incorrect procedure.
If the operator does not engage the base 310 with the lamp socket 100 and first tries to engage the base 320 with the lamp socket 200, the distance between the two lamp sockets 100 and 200 is the length of the straight tube lamp 300. Therefore, the base 310 must be completely detached from the socket body 110 as shown in FIG. Therefore, the straight tube lamp 300 is in a state of being largely inclined obliquely as compared with the case of the correct installation procedure.

FIG. 7 is an enlarged perspective view showing a state in which the straight tube lamp 300 is attached to the lighting fixture 800 in this embodiment in a wrong procedure.
As described above, when the straight tube lamp 300 is tilted and greatly inclined, the convex portion 326 and the base end portion 322 abut against the lamp holding portion 226, so that the electrode 323 can be slid downward. The tip 324 cannot be inserted into the pin insertion hole 224.

  In this way, in a state where the electrode 313 is not in contact with the grounding metal 150, the electrode 323 is not in contact with the power supply metal 250, so that it is possible to prevent an operator from receiving an electric shock by mistake.

  Note that the lighting fixture 800 may have a configuration without a waterproof function.

Embodiment 2. FIG.
The second embodiment will be described with reference to FIG.
In addition, about the part which is common in Embodiment 1, the same code | symbol is attached | subjected and description is abbreviate | omitted.

FIG. 8 is a perspective view showing an external appearance of the lamp socket 100 in this embodiment.
The lamp socket 100 has a mounting portion 160. The attachment portion 160 is a part of the grounding metal 150. The attachment portion 160 is exposed to the outside of the lamp socket 100 through a hole provided on the back surface of the leg portion 112. The attachment portion 160 has, for example, a screw hole and is directly fixed to the lighting fixture body 810. Thereby, the grounding metal 150 is electrically connected to the lighting fixture body 810. Since the grounding of the grounding metal 150 is more reliable, it is possible to prevent an operator from receiving an electric shock accidentally.

  Note that the attachment portion 160 is preferably located at the same height as the attachment plate insertion portion 111. If it does so, the attachment part 160 can be directly screwed to the sheet metal etc. which are inserted in the attachment plate insertion part 111.

Embodiment 3 FIG.
Embodiment 3 will be described with reference to FIGS.

FIG. 9 is a front view and a cross-sectional view showing the structure of the lamp socket 200 in this embodiment.
The lamp socket 200 includes a socket body 210, a stopper 230, and two power supply fittings 250. The socket body 210 includes a lamp receiving part 220 and two bearing parts 214. The lamp receiving part 220 (covering part) is a substantially oval concave part provided on one surface of the socket body 210. The bearing portion 214 is provided on the inner side of the socket main body 210 and at a position closer to the lighting fixture main body 810 than the lamp receiving portion 220. The lamp receiving part 220 has a pin insertion hole 224, a pin groove 225, a lamp holding part 226 (base contact part), and a button exposure hole 227. The button exposure hole 227 is a through hole provided at the upper center of the lamp receiving portion 220. The stopper 230 (oblique contact preventing portion) prevents the electrode 323 of the base 320 from contacting the power supply fitting 250 when the straight tube lamp 300 is inclined obliquely. The stopper 230 includes a contact portion 231, two shaft portions 232, a protection portion 233, and a frame portion 234. The contact portion 231 is exposed to the outside of the socket body 210 through the button exposure hole 227 and contacts the base end 322 of the base 320. The two shaft portions 232 are rotation shafts of the stopper 230 and are engaged with the bearing portion 214. The protection part 233 has a rod shape extending in the lateral direction. The protection unit 233 is provided on the power supply fitting 250 and prevents the electrode 323 inserted into the pin insertion hole 224 from coming into contact with the power supply fitting 250. The frame part 234 connects the contact part 231, the shaft part 232, and the protection part 233.
When the base 320 of the straight tube lamp 300 contacts the contact portion 231 and the contact portion 231 is pushed, the stopper 230 rotates about the shaft portion 232 as an axis. The protection part 233 moves from above the power supply fitting 250 so that the electrode 323 of the base 320 can come into contact with the power supply fitting 250.

FIG. 10 is a diagram showing the function of the stopper 230 in this embodiment.
The correct procedure for attaching the straight tube lamp 300 to the lighting fixture 800 is the same as that described in the first embodiment. That is, first, the base 310 is engaged with the lamp socket 100 and the base 310 is pushed in. Next, the electrode 323 is inserted into the pin insertion hole 224. The tip of the contact portion 231 protrudes from the lamp holding portion 226 by about 1 mm, for example. Therefore, before the base end 322 contacts the lamp holding unit 226, the base end 322 contacts the contact 231 and pushes the contact 231. As a result, the entire stopper 230 rotates around the shaft portion 232, and the protection portion 233 moves from above the power supply fitting 250 to the back of the lamp socket 200. For example, if the distance between the protection part 233 and the shaft part 232 is five times the distance between the contact part 231 and the shaft part 232, when the contact part 231 is pushed by 1 mm, the protection part 233 is Move 5mm, 5 times that. As a result, the electrode 323 can be slid and engaged with the pin groove 225, and the electrode 323 contacts and is electrically connected to the power supply fitting 250.

FIG. 11 is a diagram showing the function of the stopper 230 in this embodiment.
When the straight tube lamp 300 is to be attached to the lighting fixture 800 in a wrong procedure, that is, when the base 320 is to be engaged with the lamp socket 200 without engaging the base 310 with the lamp socket 100, The straight tube lamp 300 is inclined obliquely. Since the distance between the lamp sockets 100 and 200 is shorter than the length of the straight tube lamp 300, when the base 310 is brought into contact with the outside of the lamp socket 100, the inclination of the straight tube lamp 300 is minimized. For example, if the length of the straight tube lamp 300 is about 1200 mm and the center of the base 310 is shifted 40 mm from the correct position, the inclination of the straight tube lamp 300 is about 2 degrees. Since the straight tube lamp 300 is inclined obliquely, the upper side of the base end portion 322 is positioned in front of the lower side. For example, if the diameter of the base 320 is 26 mm and the inclination of the straight tube lamp 300 is 2 degrees, the upper side of the base end 322 is positioned about 1 mm before the lower side. When the lower side of the base end 322 contacts the lamp holding part 226, the base 320 cannot be pushed any further. Therefore, even if the tip of the contact portion 231 protrudes about 1 mm from the lamp holding portion 226, the contact portion 231 is not pushed, and therefore the protection portion 233 does not move. For this reason, the electrode 323 cannot be slid and engaged with the pin groove 225, and the electrode 323 does not contact the power supply fitting 250.

  As described above, by providing the stopper 230, the length of the straight tube lamp 300 is long, and therefore, when the straight tube lamp 300 is tilted in a case where the straight tube lamp 300 is attempted to be attached in a wrong procedure, the inclination is small. However, it is possible to prevent the electrode 323 from coming into contact with the power supply fitting 250, thereby preventing an operator from receiving an electric shock by mistake.

  The lighting fixture 800 may have a waterproof function.

  As described above, the configuration described in each embodiment is an example, and another configuration may be used. For example, the configuration described in different embodiments may be combined, or the configuration of an unimportant part may be replaced with another configuration.

  100, 200 Lamp socket, 110, 210 Socket body, 111, 211 Mounting plate insertion part, 112, 212 Leg part, 113, 213 Screw cylinder part, 214 Bearing part, 120, 220 Lamp receiving part, 124, 224 Pin insertion hole , 150 grounding bracket, 160 mounting portion, 190,290 waterproof rubber, 225 pin groove, 226 lamp holding portion, 227 button exposure hole, 228 inner cylinder portion, 230 stopper, 231 abutting portion, 232 shaft portion, 233 protective portion, 234 Frame, 250 Power supply bracket, 300 Straight tube lamp, 310, 320 Base, 311, 321 Base body, 312, 322 End of base, 313, 323 Electrode, 314, 324 Electrode tip, 315, 325 Electrode arm Part, 326 convex part, 330 lamp body, 400 waterproof cap, 420 Waterproof ring, 430 waterproof packing, 440 waterproof cap body, 800 lighting fixture, 810 lighting fixture body.

Claims (3)

In a lamp socket that engages with a base provided at one end of a straight tube lamp,
An electrode contact portion that contacts and electrically connects to an electrode provided on the base;
When the straight tube lamp is inclined a predetermined angle or more with respect to a predetermined direction, the cap and the contact, have a an oblique contact preventive portion to prevent the contact between the electrode and the electrode contact portion ,
The electrode has an arm portion extending in substantially the same direction as the longitudinal direction of the straight tube lamp, and a tip portion provided at the tip of the arm portion,
The diagonal contact prevention part is
A covering for covering the electrode;
An engagement hole that is provided in the cover portion and has a size that allows the arm portion to pass through without passing through the tip portion, and when the electrode is engaged with the electrode, the electrode contacts the electrode contact portion.
An insertion hole which is provided in the cover part and has a size through which the tip part and the arm part pass, and is continuous with the engagement hole;
When the straight tube lamp is inclined a predetermined angle or more with respect to a predetermined direction, the cap and the contact, the said distal end portion is closed and a mouthpiece abutting portion that does not pass through the insertion hole Lamp socket characterized by. A lamp socket according to claim 1 ;
A power supply for supplying power to the straight tube lamp engaged with the lamp socket;
A second lamp socket engaged with a second cap provided at the other end of the straight tube lamp;
The oblique contact preventing portion prevents the electrode and the electrode contact portion from contacting each other when the second base is not engaged with the second lamp socket. The second lamp socket is
A ground electrode contact portion that is in contact with and electrically connected to the ground electrode provided on the second base;
3. The illumination according to claim 2 , further comprising: a movable portion that is movable by being pushed by the second base and moving away from the lamp socket when the ground electrode comes into contact with the ground electrode contact portion. Instruments.

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