JP2014026771A - Lamp socket and lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate energy conservation by reducing time for performing thinned-out lighting to be able to easily performing the thinned-out lighting.SOLUTION: A socket 13 (a lamp socket) comprises: a socket body 31; a pair of connection terminals 34 and 35 (a contact segment); a rotor 33; and a switch 36. The pair of the connection terminals 34 and 35 is electrically connected to an electrode power receiving terminal of a lamp and supplies electric power to the lamp. The switch 36 causes an interface between the pair of the connection terminals 34 and 35 to short-circuit by pressing from the outside.

Description

  The present invention relates to a lamp socket for mounting a lamp.

There is a lighting fixture that detachably connects a lamp having a light source such as an LED and lights the connected lamp.
In a lighting fixture having a configuration in which a plurality of lamps can be connected to one lighting fixture, a plurality of lamps may be configured to be electrically connected in series. In order to save energy, there is a technique for lighting another lamp by connecting a dummy lamp to the position of the thinned lamp when the lamp is lit.

JP 2011-198490 A

In order to connect the dummy lamp to the thinned lamp position, it is necessary to purchase the dummy lamp separately. In addition, the thinned lamp needs to be stored separately. Although thinning-on lighting is highly effective as an energy saving that can be easily performed, such an effort may be an obstacle and energy saving may not be promoted.
An object of the present invention is to promote energy saving by, for example, reducing the effort for thinning lighting and facilitating thinning lighting.

  The lamp socket according to the present invention includes a pair of connection terminals for supplying power to the lamp and a switch for short-circuiting the pair of connection terminals.

  According to the lamp socket according to the present invention, it is possible to easily perform thinning-out lighting only by short-circuiting between the pair of connection terminals by the switch, and it is possible to promote energy saving.

FIG. 3 is a perspective view showing the lighting fixture 10 in the first embodiment. FIG. 3 is a circuit diagram showing a configuration of a lamp 20 in the first embodiment. FIG. 3 is an exploded perspective view showing the structure of the socket 13 in the first embodiment. FIG. 3 is a perspective view showing a structure of a socket body 31 in the first embodiment. FIG. 3 is a perspective view showing a structure of a cover 32 in the first embodiment. FIG. 3 is a perspective view showing a structure of a rotor 33 in the first embodiment. FIG. 3 is a perspective view showing a structure of a connection terminal 35 in the first embodiment. FIG. 3 is a perspective view showing a structure of a switch 36 in the first embodiment. FIG. 5 shows a position of a switch 36 in the first embodiment. FIG. 2 is a circuit diagram illustrating a configuration of a lighting fixture 10 according to Embodiment 1.

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

  FIG. 1 is a perspective view showing a lighting fixture 10 in this embodiment.

  The luminaire 10 is used by connecting lamps 20a and 20b (hereinafter referred to as “lamp 20” when it is not necessary to distinguish between the lamp 20a and the lamp 20b). The lamp 20 has a straight tube shape, for example. The lamp 20 has a base at each end.

  The lighting fixture 10 is, for example, referred to as “socket 13” when it is not necessary to distinguish the fixture body 11, the reflector 12, and the four sockets 13a, 13b, 14a, and 14b (hereinafter, the socket 13a and the socket 13b). Similarly, when there is no need to distinguish between the socket 14a and the socket 14b, they are referred to as “socket 14”.

The appliance main body 11 is a case for incorporating a lighting device 15 (described later).
The reflector 12 reflects the light emitted from the lamp 20.
The four sockets 13 and 14 (lamp sockets) are fixed to the instrument body 11.
The socket 13a and the socket 14a are engaged with a base of the lamp 20a to fix the lamp 20a so as to be detachable. The socket 13b and the socket 14b are engaged with the base of the lamp 20b to fix the lamp 20b so as to be detachable.

  FIG. 2 is a circuit diagram showing the configuration of the lamp 20 in this embodiment.

The lamp 20 includes, for example, light sources 21 a to 21 e such as LEDs (hereinafter referred to as “light source 21” when it is not necessary to distinguish the light sources 21 a to 21 e), and power receiving terminals 22 and 23.
The light sources 21a to 21e are electrically connected in series, for example. The number of the light sources 21 may be any number, and the connection between the light sources 21 may be another connection such as a parallel connection.
The power receiving terminals 22 and 23 receive power for lighting the light source 21. The power receiving terminals 22 and 23 are arranged on a base located at one end of the lamp. The base having the power receiving terminals 22 and 23 has a shape that engages with the socket 13.
The other base is provided with, for example, a fixed terminal intended only for fixing, a ground terminal intended also for grounding, and the like. The other base has a shape that engages with the socket 14.

  FIG. 3 is an exploded perspective view showing the structure of the socket 13 in this embodiment.

The socket 13 includes, for example, a socket body 31, a cover 32, a rotor 33, a pair of connection terminals 34 and 35, and a switch 36.
The socket body 31, the cover 32, and the rotor 33 are made of, for example, a thermoplastic resin such as polycarbonate or polyethylene terephthalate, or other insulating materials.
The cover 32 is fitted to the socket body 31 to cover the space inside the socket.
The rotor 33 rotates with the lamp 20 engaged with the socket 13.
The pair of connection terminals 34 and 35 (contact pieces) are formed of a metal such as phosphor bronze or other conductive material.
The pair of connection terminals 34 and 35 inputs power for lighting the lamp 20. The connection terminal 34 is in electrical contact with the power receiving terminal 22 of the lamp 20. The connection terminal 35 is in electrical contact with the power receiving terminal 23 of the lamp 20. The pair of connection terminals 34 and 35 supplies the input power to the lamp 20.
The switch 36 (short-circuit switch, communication switch) is a push button type switch for short-circuiting between the pair of connection terminals 34 and 35.

  FIG. 4 is a perspective view showing the structure of the socket body 31 in this embodiment.

The socket main body 31 includes, for example, an opening 311, a switch hole 312, cover fitting portions 313 and 314, instrument main body fitting portions 315 and 316, and connection terminal storage portions 317 and 318.
The opening 311 is a substantially circular opening provided in front of the socket body 31. The opening 311 is for inserting the base of the lamp 20.
The switch hole 312 (switch insertion part) is a substantially rectangular notch provided near the top of the socket body 31. The switch hole 312 is for exposing a part of the switch 36 to the outside of the socket body 31 and operating the switch 36 from the outside.
The cover fitting portions 313 and 314 are provided inside the side surface of the socket main body 31. The cover fitting portions 313 and 314 are for fitting with the cover 32 and fixing the cover 32 to the socket main body 31.
The instrument body fitting portions 315 and 316 are provided near the bottom surface of the socket body 31. The instrument body fitting portions 315 and 316 are for fitting with the instrument body 11 and fixing the socket 13 to the instrument body 11.
The connection terminal storage portions 317 and 318 have a cylindrical shape and are provided from the bottom surface of the socket body 31 toward the inside. The connection terminal storage portions 317 and 318 have wiring holes on the bottom surface of the socket body 31. The connection terminal storage portion 317 stores the lower end of the connection terminal 34. The wiring connected to the connection terminal 34 is inserted from the wiring hole, passes through the inside of the connection terminal storage portion 317, and is connected to the connection terminal 34. The connection terminal storage unit 318 stores the lower end of the connection terminal 35. The wiring connected to the connection terminal 35 is inserted from the wiring hole, passes through the inside of the connection terminal storage portion 318, and is connected to the connection terminal 35.

  FIG. 5 is a perspective view showing the structure of the cover 32 in this embodiment.

The cover 32 has claw portions 323 and 324, for example.
The claw portion 323 is fitted with the cover fitting portion 313 of the socket body 31. The claw portion 324 is fitted with the cover fitting portion 314 of the socket body 31. As a result, the cover 32 is fixed to the socket body 31.

  FIG. 6 is a perspective view showing the structure of the rotor 33 in this embodiment.

The rotor 33 includes receiving portions 331 and 332 and a cylindrical portion 333, for example.
The receiving portions 331 and 332 have a substantially semicircular plate shape. When the two receiving portions 331 and 332 are combined, the circular shape is slightly larger than the opening 311 of the socket body 31. The receiving portions 331 and 332 engage around the opening 311. Thereby, the rotor 33 can rotate around the central axis of the opening 311.
The cylindrical portion 333 has a substantially cylindrical shape. The central axis of the cylindrical portion 333 is perpendicular to the receiving portions 331 and 332 and passes through the center of a circle formed by the two receiving portions 331 and 332. The cylindrical portion 333 has notches 334 and 335 at positions corresponding to the gap between the receiving portions 331 and 332.
When the base of the lamp 20 is inserted into the opening 311, the power receiving terminals 22 and 23 are engaged with the notches 334 and 335. When the lamp 20 is rotated in this state, the rotor 33 rotates together with the lamp 20.

FIG. 7 is a perspective view showing the structure of the connection terminal 35 in this embodiment.
Since the connection terminal 34 is symmetrical with the connection terminal 35, the description thereof is omitted.

The connection terminal 35 includes, for example, a quick connection terminal portion 351, a power receiving terminal contact portion 352, and a switch contact portion 353.
The quick connection terminal portion 351 is provided at the lower end of the connection terminal 35. The quick connection terminal portion 351 has a quick connection terminal structure and is physically and electrically connected to the wiring that has passed through the inside of the connection terminal storage portion 318. The quick connection terminal portion 351 is stored in the connection terminal storage portion 318.
The power receiving terminal contact portion 352 has a semicircular arc shape along the periphery of the cylindrical portion 333 of the rotor 33. The power receiving terminal contact portion 352 contacts and is electrically connected to the power receiving terminal 23 engaged with the notch 335.
The switch contact portion 353 is provided at the upper end of the connection terminal 35. The switch contact portion 353 is in electrical contact with the switch 36.

  FIG. 8 is a perspective view showing the structure of the switch 36 in this embodiment.

The switch 36 includes, for example, an operation unit 361 and a short-circuit fitting 362.
The operation unit 361 is made of an insulating material. The operation unit 361 is exposed to the outside of the socket 13 from the switch hole 312 of the socket body 31.
The short-circuit fitting 362 is made of a conductive material. The short-circuit metal fitting 362 short-circuits between the connection terminals 34 and 35 by contacting and electrically connecting the connection terminals 34 and 35.

The switch 36 has two stable positions, an open position and a short-circuit position. Each time the user presses the operation unit 361, the position of the switch 36 switches between two stable positions. That is, when the user depresses the operation unit 361 when the switch 36 is in the open position, the switch 36 moves to the short-circuit position and becomes stable. Conversely, when the user presses down the operation unit 361 when the switch 36 is in the short-circuit position, the switch 36 moves to the open position and becomes stable.
FIG. 9 is a diagram showing the position of the switch 36 in this embodiment.

The left shows the case where the switch 36 is in the open position. When the switch 36 is in the open position, the short-circuit fitting 362 does not contact the connection terminals 34 and 35 and does not short-circuit between the two connection terminals 34 and 35.
The right shows the case where the switch 36 is in the short-circuit position. When the switch 36 is in the short-circuit position, the short-circuit fitting 362 is in surface contact with the switch contact portion of the connection terminals 34 and 35 to short-circuit the two connection terminals 34 and 35.

  FIG. 10 is a circuit diagram showing a configuration of the lighting fixture 10 in this embodiment.

The lighting fixture 10 includes a lighting device 15 and wirings 16a to 16c.
The lighting device 15 (drive power source) outputs power for lighting the lamp 20 connected to the sockets 13 and 14. The lighting device 15 includes, for example, a pair of input terminals 51 and 52, an input circuit 53, a DC / DC conversion circuit 54, a current detection circuit 55, a voltage detection circuit 56, a control circuit 57, and a pair of output terminals 58. , 59.
The pair of input terminals 51 and 52 are electrically connected to an external power source 90 such as a commercial power source, for example, and input power supplied from the external power source 90.
The input circuit 53 transmits the power input from the pair of input terminals 51 and 52 to the DC / DC conversion circuit 54. The input circuit 53 includes, for example, a fuse 531 and a full wave rectifier circuit 532. The fuse 531 is cut when a current exceeding a predetermined threshold value flows to protect the circuit. The full-wave rectifier circuit 532 is, for example, a diode bridge, and rectifies AC power supplied from the external power supply 90 to generate a pulsating flow.
The DC / DC conversion circuit 54 (DCDC converter circuit) converts the power transmitted from the input circuit 53 into DC power having a stable voltage. The DC / DC conversion circuit 54 is, for example, a boost converter circuit including an inductor 541, a switching element 542, a rectifying element 543, and a capacitor 544.
The current detection circuit 55 detects the current value of the power converted by the DC / DC conversion circuit 54. The current detection circuit 55 includes, for example, a current detection resistor 551.
The voltage detection circuit 56 detects the voltage value of the electric power converted by the DC / DC conversion circuit 54. The voltage detection circuit 56 includes a voltage detection resistor 561, for example.
The control circuit 57 controls the DC / DC conversion circuit 54. For example, the control circuit 57 adjusts the frequency at which the switching element 542 is turned on and off, the duty ratio, and the like so that the current value detected by the current detection circuit 55 matches a predetermined target current value. In addition, when the voltage value detected by the voltage detection circuit 56 is outside the predetermined range, the control circuit 57 determines that an abnormality has occurred and stops the operation of the DC / DC conversion circuit 54.
The pair of output terminals 58 and 59 outputs the electric power converted by the DC / DC conversion circuit 54.

  The wiring 16a electrically connects the output terminal 58 of the lighting device 15 and the connection terminal 34 of the socket 13a. The wiring 16b electrically connects the connection terminal 35 of the socket 13a and the connection terminal 34 of the socket 13b. The wiring 16c electrically connects the connection terminal 35 of the socket 13b and the output terminal 59 of the lighting device 15. Thereby, the lamp 20a connected to the socket 13a and the lamp 20b connected to the socket 13b are connected in series and connected to the output of the lighting device 15.

  Next, the usage method of the lighting fixture 10 in this embodiment is demonstrated.

  When the two lamps 20a and 20b are connected to the lighting fixture 10 and lighted, the switches 36 of the two sockets 13a and 13b are both set to the open position. Thereby, the two lamps 20a and 20b are electrically connected in series to the output of the lighting device 15. When the control circuit 57 adjusts the current value of the power output from the DC / DC converter circuit, a current having a predetermined target current value flows through the two lamps 20a and 20b. As a result, the two lamps 20a and 20b are turned on with desired brightness.

  In order to save energy, when thinning lighting is performed, the switch 36 of one of the sockets 13 is set to the short-circuited position, and the switch 36 of the other socket 13 is set to the open position. For example, if the switch 36 of the socket 13a is set to the short-circuit position and the switch 36 of the socket 13b is set to the open position, the input of the lamp 20a connected to the socket 13a is short-circuited, so that no power is supplied to the lamp 20a. Only the lamp 20b connected to the socket 13b is connected to the output of the lighting device 15. The control circuit 57 adjusts the current value of the power output from the DC / DC conversion circuit, whereby a current having a predetermined target current value flows through the lamp 20b. On the other hand, no current flows through the lamp 20a. Thereby, the lamp 20b is turned on, but the lamp 20a is not turned on.

  Since it is not necessary to remove the lamp 20 in order to perform thinning lighting, it is possible to easily perform thinning lighting without taking the trouble of removing the lamp 20 or the trouble of supplementing the removed lamp 20. Also, there is no need to purchase additional parts such as dummy lamps.

In addition, even if the lamp 20 is not connected to the socket 13 in which the switch 36 is in the short-circuited position, a current flows through the short-circuit fitting 362 of the switch 36 that has short-circuited between the two connection terminals 34 and 35. The lamp 20 connected to the socket 13 is lit.
Therefore, if it is planned to perform thinning-out lighting from the beginning, it is not necessary to purchase two lamps 20, and it is sufficient to purchase only the number of lamps 20 to be lit.

  According to the lighting fixture 10 in this embodiment, thinning-out lighting can be performed without taking the trouble of removing the lamp 20 or storing the removed lamp 20 separately. Since it is not necessary to purchase additional parts such as a dummy lamp, it is possible to easily perform thinning-out lighting and to realize energy saving.

  The configuration described above is an example, and other configurations may be used. For example, a configuration in which a configuration of a non-essential part is replaced with another configuration may be used.

  DESCRIPTION OF SYMBOLS 10 Lighting fixture, 11 Appliance main body, 12 Reflector, 13, 14 Socket, 15 Lighting device, 16 Wiring, 20 Lamp, 21 Light source, 22, 23 Power receiving terminal, 31 Socket main body, 311 Opening, 312 Switch hole, 313 314 Cover fitting part, 315, 316 Instrument body fitting part, 317, 318 Connection terminal storage part, 32 Cover, 323, 324 Claw part, 33 Rotor, 331, 332 Receiving part, 333 Cylindrical part, 334, 335 Cut Notch, 34, 35 Connection terminal, 351 Fast connection terminal part, 352 Power receiving terminal contact part, 353 Switch contact part, 36 Switch, 361 Operation part, 362 Short circuit bracket, 51, 52 Input terminal, 53 Input circuit, 531, Fuse, 532 Full-wave rectifier circuit, 54 DC-DC converter circuit, 541 inductor, 542 switching element Child, 543 rectifier, 544 capacitor, 55 current detection circuit, 551 current detection resistor, 56 voltage detection circuit, 561 voltage detection resistor, 57 control circuit, 58, 59 output terminal, 90 external power supply.

Claims (3)

A pair of connection terminals for supplying power to the lamp;
A lamp socket comprising: a switch for short-circuiting the pair of connection terminals.   2. The lamp socket according to claim 1, wherein the switch has an operation portion exposed to the outside of the lamp socket, and shorts between the pair of connection terminals when the operation portion is pressed. A first lamp socket for connecting the first lamp;
A second lamp socket for connecting a second lamp;
A lighting device for outputting electric power to be supplied to the first lamp connected to the first lamp socket and the second lamp connected to the second lamp socket;
The lighting device, the first lamp socket and the second lamp socket are electrically connected, and the first lamp connected to the first lamp socket and the second lamp are connected to the output of the lighting device. A second lamp connected to the lamp socket and electrically connecting in series with the second lamp,
The lighting fixture according to claim 1, wherein at least one of the first lamp socket and the second lamp socket is the lamp socket according to claim 1.

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