CN210443778U - Lamp holder and lighting fixture - Google Patents
Lamp holder and lighting fixture Download PDFInfo
- Publication number
- CN210443778U CN210443778U CN201921521499.5U CN201921521499U CN210443778U CN 210443778 U CN210443778 U CN 210443778U CN 201921521499 U CN201921521499 U CN 201921521499U CN 210443778 U CN210443778 U CN 210443778U
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- terminal
- lamp
- opening
- light source
- lamp socket
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- Connecting Device With Holders (AREA)
- Fastening Of Light Sources Or Lamp Holders (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model provides a can restrain lamp stand and lighting apparatus that the short circuit takes place. The light source unit is detachably mounted in the lamp socket. The lamp socket is provided with a collar portion, a first terminal and a second terminal, wherein the polarity of the second terminal is different from that of the first terminal. The collar portion engages with a cap portion in the light source unit. The collar portion has a non-conductive threaded portion, and the cap portion is threadedly coupled to the threaded portion. The second terminal is disposed at a position corresponding to the thread valley portion in the screw portion.
Description
Technical Field
The utility model relates to a lamp stand and lighting apparatus.
Background
[ patent document ]
Patent document 1: japanese patent laid-open publication No. 2017-10693
However, in the lamp socket disclosed in patent document 1, when the bulb is mounted in the lamp socket, the housing connection member and the center contact may be electrically connected by, for example, a finger of an operator, and a short circuit may occur.
SUMMERY OF THE UTILITY MODEL
The present invention has been made in view of the above problems, and an object of the present invention is to provide a lamp socket and a lighting fixture capable of suppressing occurrence of a short circuit.
In the lamp socket disclosed in the present application, a light source unit is detachably mounted in the lamp socket. The lamp socket is provided with a collar portion, a first terminal and a second terminal, wherein the polarity of the second terminal is different from that of the first terminal. The collar portion engages with a base portion in the light source unit. The collar portion has a non-conductive threaded portion, and the base portion is threadedly coupled to the threaded portion. The threaded portion has a trough portion. The second terminal is disposed at a position corresponding to the trough portion.
In the lamp socket disclosed in the present application, the screw portion has an opening portion provided in the trough portion. The second terminal is provided at a position facing the opening.
In the lamp socket disclosed in the present application, the second terminal has a base portion and a protruding portion. The projection portion projects from the base portion. The protruding portion is provided in the base portion at a position opposite to the opening portion.
In the lamp socket disclosed in the present application, the screw portion further has a spiral crest portion protruding from the spiral trough portion. The tip of the protruding portion is closer to the base portion than the tip of the spiral crest portion.
In the lamp socket disclosed in the present application, the tip of the protruding portion is closer to the tip of the spiral peak portion than the opening portion.
The lamp holder disclosed in the present application further includes a force application portion. The urging portion urges the second terminal in a direction toward the opening portion.
In the lamp socket disclosed in the present application, the second terminal is spaced apart from the opening portion by a distance in a case where the base portion is not in contact with the first terminal. The second terminal approaches the opening portion when the base portion is in contact with the first terminal.
The lamp socket disclosed in the present application further includes a first adjustment unit. The first adjustment unit adjusts the current supplied to the light source unit according to a current value of the current flowing between the first terminal and the second terminal.
The lamp socket disclosed in the present application further includes a second adjustment unit. The second adjustment unit adjusts a current value of the current supplied to the light source unit according to the temperature of the lamp socket.
The lighting fixture disclosed in the present application includes a base portion and a fixture body. The light source unit is detachably mounted in the lamp socket part. The lamp base portion is disposed in the appliance main body. The socket portion is provided with a collar portion, a first terminal, and a second terminal having a polarity different from that of the first terminal. The collar portion engages with a base portion in the light source unit. The collar portion has a non-conductive threaded portion, and the base portion is threadedly coupled to the threaded portion. The threaded portion has a trough portion. The second terminal is disposed at a position corresponding to the trough portion.
According to the utility model discloses a lamp stand and lighting apparatus can restrain the emergence of short circuit.
Drawings
Fig. 1 shows a lamp socket and a lamp according to a first embodiment of the present invention.
Fig. 2 is a structural diagram of a bulb according to a first embodiment of the present invention.
Fig. 3a is a view of the lamp socket of fig. 1 viewed from the-Z side, and fig. 3b shows a cross section taken along line IIIB-IIIB in fig. 3 a.
Fig. 4a and 4b are schematic enlarged views of the female screw portion and its vicinity according to the first embodiment of the present invention.
Fig. 5a and 5b are partial enlarged views of a lamp socket and a lamp bulb according to an embodiment of the present invention.
Fig. 6 is a schematic cross-sectional view of the second terminal and its vicinity according to the second embodiment of the present invention.
Fig. 7a and 7b are schematic cross-sectional views of the second terminal and its vicinity according to the third embodiment of the present invention.
Fig. 8 is a partial schematic view of a lamp socket according to a fourth embodiment of the present invention.
Fig. 9 is a cross-sectional view of the second terminal and its vicinity according to the fifth embodiment of the present invention.
Fig. 10 is another schematic cross-sectional view of the second terminal and its vicinity according to the fifth embodiment of the present invention.
Fig. 11 is a schematic structural view of a lamp socket according to a sixth embodiment of the present invention.
Fig. 12 is a lighting device according to a seventh embodiment of the present invention.
[ description of reference numerals ]
1, a lamp holder;
2 bulb (light source unit);
3a base portion;
10 an appliance main body;
11a first terminal;
12 a second terminal;
13 a collar portion;
14 a force application part;
17 an adjusting part;
21 a lamp cap part;
23 a light source unit;
100 lighting fixtures;
123 a base part;
124 a projection;
131a female screw portion (thread portion);
131a second trough portion;
131b second spiral peak parts;
131h opening part;
171 a first adjusting part;
172 second adjusting part.
Detailed Description
Embodiments of a lamp socket and a lighting fixture according to the present invention will be described below with reference to the drawings. In the drawings, the same or corresponding portions are denoted by the same reference numerals, and description thereof will not be repeated.
[ first embodiment ]
First, a lamp socket 1 according to a first embodiment will be described with reference to fig. 1. Fig. 1 shows a lamp socket 1 and a lamp bulb 2 according to the first embodiment. Hereinafter, the present embodiment will be described in which the side of the base 1 to which the bulb 2 is attached is the "+ Z side" and the opposite side is the "+ Z side".
As shown in fig. 1, in a lamp socket 1, a bulb 2 is mounted. The bulb 2 is detachable from the socket 1. After the bulb 2 is mounted to the socket 1, the socket 1 is electrically connected to the bulb 2. In the present embodiment, the socket 1 has a substantially cylindrical shape.
Next, a structure of the bulb 2 according to the first embodiment will be described with reference to fig. 2. Fig. 2 is a structural diagram of a lamp bulb 2 according to the first embodiment. The bulb 2 is an example of a light source unit. In fig. 2, the side of the bulb 2 connected to the socket 1 (see fig. 1) is on the "+ Z side", and the opposite side is on the "— Z side".
The bulb 2 emits light. As shown in fig. 2, the direction of the optical axis LA of the light emitted from the bulb 2 is a direction from the + Z side to the-Z side. In the present embodiment, the bulb 2 is an led (light Emitting diode) bulb. In the following description, the "direction from the + Z side to the-Z side" and the "direction from the-Z side to the + Z side" may be referred to as "Z-axis direction".
As shown in fig. 2, the bulb 2 has a structure similar to that of a general LED bulb. Specifically, the bulb 2 includes a base 21, a power supply 22, and a light source 23. The base portion 21 is substantially cylindrical in shape. When the base portion 21 is viewed in the Z-axis direction, the base portion 21 has a substantially circular shape.
The base part 21 receives power supplied from an external power supply device, and supplies the received power to the power supply part 22.
The base part 21 has an outer shell part 211, an insulation part 212 and a central contact 213. The housing portion 211 and the center contact 213 are formed of conductive members. The housing part 211 and the center contact 213 contain, for example, a metal material.
The housing portion 211 receives power supplied from an external power supply device. The housing portion 211 is provided at a side of the base portion 21. The housing portion 211 includes an externally threaded portion 211 a. The external thread portion 211a has a plurality of first thread portions 211b and a plurality of first thread valley portions 211 c. The first spiral peak portions 211b protrude from the first spiral valley portions 211c radially outward of the base portion 21. The plurality of first trough portions 211c constitute a spiral-shaped groove. The plurality of first crest portions 211b and the plurality of first trough portions 211c are alternately arranged along the Z-axis direction.
Of the 2 ends of the base part 21, the insulating part 212 and the center contact 213 are provided at the end on the side opposite to the side where the power source part 22 and the light source part 23 are arranged (+ Z side).
The insulation 212 insulates the outer shell 211 from the center contact 213. The center contact 213 receives power supplied from an external power supply device. Specifically, the polarity of the current supplied to the center contact 213 is different from the polarity of the current supplied to the housing portion 211.
The housing portion 211 and the center contact 213 receive power, and thus power supplied from an external power supply device is supplied to the power supply portion 22.
The power supply section 22 includes a power supply case 221 and a power control circuit 222. The power control circuit 222 is disposed inside the power supply case 221. The power control circuit 222 supplies the power supplied from the base portion 21 to the light source portion 23. Specifically, the power control circuit 222 converts the external power supply voltage into the internal power supply voltage. The power control circuit 222 supplies the internal power supply voltage to the light source section 23.
The light source unit 23 includes a cover 231 and a light source 232. The cap 231 contains a light transmitting material. The cover 231 is hollow and substantially hemispherical. The light source 232 is disposed inside the cover 231.
The light source 232 emits light. The light source 232 is, for example, an smd (surface Mount device) chip.
The light source 232 includes a light emitting element. The light-emitting element includes, for example, an LED element.
Next, the structure of the lamp socket 1 according to the first embodiment will be described with reference to fig. 2, 3a, and 3 b. Fig. 3a is a view of the lamp holder 1 from the-Z side in fig. 1. Fig. 3b shows a cross-section along line IIIB-IIIB in fig. 3 a. In fig. 3b, hatching lines showing the cross section of the rim portion 13 are omitted for the sake of easy understanding.
As shown in fig. 3a and 3B, the socket 1 includes a socket body 1h, a first terminal 11, a second terminal 12, a collar 13, a first fastening member B1, and a second fastening member B2. In the present embodiment, the first terminal 11 is a positive electrode terminal, and the second terminal 12 is a negative electrode terminal.
The socket body 1h is substantially cylindrical in shape. When the socket body 1h is viewed in the Z-axis direction, the socket body 1h has a substantially circular shape. The socket body 1h has a side wall 101 and a partition wall 102. The side wall 101 constitutes the circumferential surface of the socket body 1 h. The partition wall 102 extends in a direction intersecting the Z-axis direction. Specifically, the partition wall 102 extends in the radial direction of the socket body 1 h.
As shown in fig. 3b, the partition wall 102 divides the internal space of the socket body 1h into 2 spaces. Hereinafter, of the 2 spaces divided by the partition wall 102, the space provided on the-Z side is referred to as "first space S1". In other words, the first space S1 is constituted by the side wall 101 and the partition wall 102. The first space S1 communicates with the outside of the socket body 1h on the-Z side. When the first space S1 is viewed along the Z-axis direction, the shape of the first space S1 is substantially circular.
As shown in fig. 3a and 3b, the first terminal 11, the second terminal 12, and the grommet 13 are disposed in the first space S1.
The first terminal 11 is a conductive member. The first terminal 11 is a plate-like member. The first terminal 11 is fixed to the partition wall 102 by the first fastening member B1. As shown in fig. 3B, the first terminal 11 is electrically connected to the external power supply device through the first fastening member B1. The first fastening member B1 is a conductive member, such as a screw.
The first terminal 11 extends in a radial direction of the first space S1. The first terminal 11 is farther from the partition wall 102 as it approaches the radially inner side of the first space S1. In the present embodiment, the first terminal 11 has an elastic force. The first terminal 11 is, for example, a plate spring. The tip end portion of the first terminal 11 is freely movable in the Z-axis direction.
The second terminal 12 is a conductive member. The second terminal 12 is a plate-like member. When the second terminal 12 is viewed in the radial direction of the first space S1, the shape of the second terminal 12 is a rectangle whose longitudinal direction is the Z-axis direction.
The second terminal 12 has an opposite portion 121 and a fastened portion 122. The facing portion 121 is disposed between the side wall 101 and the lip portion 13. Specifically, the facing portion 121 is disposed at a position facing a part of the inner peripheral surface of the side wall 101. In other words, the facing portion 121 is disposed at a position facing a part of the outer peripheral surface of the bezel portion 13.
The second terminals 12 have elastic force. The opposing portion 121 receives a pressure toward the outer peripheral surface of the rim portion 13 due to the elastic force of the second terminal 12. Preferably, the facing portion 121 contacts the outer peripheral surface of the bezel portion 13.
The fastened portion 122 is fixed to the socket body 1h by the second fastening member B2. The second terminal 12 is electrically connected to an external power supply device through the second fastening member B2. The second fastening member B2 is a conductive member, such as a screw.
The collar portion 13 engages with the base portion 21 of the bulb 2 described with reference to fig. 2. Specifically, the bezel portion 13 is mechanically connected to the base portion 21.
The rim portion 13 is hollow and substantially cylindrical. When the collar portion 13 is viewed in the Z-axis direction, the shape of the collar portion 13 is substantially circular. The collar portion 13 has a second space S2. The second space S2 communicates with the outside of the mouth ring portion 13 on the-Z side. The base part 21 is inserted into the bezel part 13 from the-Z side toward the + Z side.
The collar portion 13 has a female screw portion 131, and the cap portion 21 is screwed to the female screw portion 131. The female screw 131 is an example of a screw portion. The female screw portion 131 is an electrically non-conductive member. The non-conductive member preferably contains a resin material. The resin includes, for example, a PBT (polybutylene terephthalate) resin, a PET (polyethylene terephthalate) resin, and a PC (polycarbonate) resin.
The female screw portion 131 is provided continuously along the circumferential direction of the rim portion 13. The female screw portion 131 has a plurality of second trough portions 131a and a plurality of second crest portions 131 b. The second crests 131b project from the second troughs 131a radially inward of the mouth-and-ring portion 13. The plurality of second trough portions 131a constitute a spiral-shaped groove. The plurality of second trough portions 131a and the plurality of second crest portions 131b are alternately arranged along the Z-axis direction. In the present embodiment, the facing portion 121 of the second terminal 12 is rectangular in shape with the Z-axis direction as the longitudinal direction, and is disposed between the side wall 101 and the mouth portion 13, so as to be disposed at a position corresponding to the plurality of second trough portions 131 a. Specifically, the facing portion 121 is disposed at a position facing the plurality of second trough portions 131 a.
Next, the structure of the female screw portion 131 according to the first embodiment will be described with reference to fig. 4a and 4 b.
Fig. 4a and 4b are schematic enlarged views of the female screw portion 131 and its vicinity according to the first embodiment. Specifically, fig. 4a is an enlarged view of the female screw portion 131 and its vicinity as viewed from the second space S2 (see fig. 3 b). FIG. 4b is a schematic cross-sectional view taken along line IVB-IVB in FIG. 4 a.
As shown in fig. 4a and 4b, the female screw 131 has an opening 131 h. In the present embodiment, the opening 131h has a substantially rectangular shape. Specifically, the opening 131h has a substantially parallelogram shape.
The opening 131h is provided in the second trough 131a at a position facing the facing portion 121 of the second terminal 12. In the present embodiment, the female screw portion 131 has a plurality of openings 131 h. The plurality of openings 131h are arranged side by side in the Z-axis direction. The number of the openings 131h corresponds to the number of the second valley portions 131 a. Specifically, the number of openings 131h is equal to or less than the number of second trough portions 131 a.
In the facing portion 121, a part is exposed from each opening 131 h. Specifically, the facing portions 121 are provided at positions facing the openings 131 h. Therefore, in the facing portion 121, a part of the facing portion 121 is visible through each opening 131 h. Note that the term "visible" includes not only a part of the facing portion 121 visible through the opening 131h when the rim portion 13 is viewed from the-Z side in the + Z direction, but also a part of the facing portion 121 visible through the opening 131h from inside the second space S2.
Next, the lamp socket 1 and the lamp 2 according to the first embodiment will be described with reference to fig. 5a and 5 b. Fig. 5a and 5b are partially enlarged views of the lamp socket 1 and the bulb 2 according to the first embodiment. Specifically, fig. 5b is a schematic cross-sectional view of the second terminal 12 and its vicinity in fig. 5 a. In fig. 5a and 5b, only the lamp socket 1 is illustrated for the convenience of understanding. In fig. 5a, hatching showing a cross section of the rim portion 13 is omitted.
As shown in fig. 5a, the cap part 21 is inserted into the first space S1, and at least one of the lamp socket 1 and the bulb 2 is rotated, so that the cap part 21 engages with the mouth ring part 13. Specifically, the male screw portion 211a of the base portion 21 is screwed into the female screw portion 131 of the collar portion 13, and the bulb 2 is mounted in the base 1. In a state where the bulb 2 has been mounted in the lamp socket 1, the center contact 213 is in contact with the first terminal 11. After the first terminal 11 is contacted by the center contact 213, the tip thereof is bent so as to move in the + Z direction.
Also, as shown in fig. 5b, in a state where the bulb 2 has been mounted in the socket 1, the first screw portion 211b is in contact with the opposing portion 121 of the second terminal 12. Therefore, in a state where the bulb 2 has been mounted in the lamp socket 1, the bulb 2 is electrically connected to the lamp socket 1 (the first terminal 11 and the second terminal 12).
As described above, the first embodiment is explained. In a general lamp socket, the female screw portion is formed of a conductive member. Specifically, the female screw portion constitutes a negative electrode terminal. Therefore, when the bulb 2 is mounted in the socket 1, the electric conductor other than the bulb 2 may come into contact with the positive electrode terminal and the negative electrode terminal at the same time. For example, sometimes the operator's finger simultaneously touches the positive terminal and the negative terminal. When a conductor other than the bulb 2 contacts the positive electrode terminal and the negative electrode terminal at the same time, the positive electrode terminal and the negative electrode terminal are conducted through the conductor, and a short circuit may occur. In the present embodiment, the female screw portion 131 is an electrically non-conductive member. Therefore, when the bulb 2 is mounted in the socket 1, the electric conductor other than the bulb 2 is suppressed from contacting the second terminal 12. In other words, the electric conductor other than the bulb 2 is suppressed from simultaneously contacting the first terminal 11 and the second terminal 12. Therefore, occurrence of short circuit is suppressed.
In the present embodiment, the first terminal 11 has an elastic force. Therefore, the electrical connection of the first terminal 11 with the center contact 213 becomes reliable.
In the present embodiment, the opposing portion 121 of the second terminal 12 is biased toward the outer peripheral surface of the rim portion 13 by the spring force of the second terminal 12. As a result, the opposing portion 121 can be brought closer to the opening 131 h. Therefore, the male screw portion 211a (the first crest portion 211b) and the second terminal 12 are easily brought into contact through the opening 131 h. In other words, the electrical connection of the lamp holder 1 to the bulb 2 becomes more reliable.
In the present embodiment, the configuration in which the number of the second terminals 12 is 1 is described, but the number of the second terminals 12 may be several. In this case, the plurality of second terminals 12 are arranged along the outer peripheral surface of the rim portion 13.
In the present embodiment, the case where the second terminals 12 are plate-like members has been described, but the shape of the second terminals 12 may be a substantially cylindrical shape having a substantially circular shape when viewed along the Z-axis direction. When the second terminal 12 has a substantially cylindrical shape, the second terminal 12 is disposed so as to cover the outer peripheral surface of the grommet 13.
In the present embodiment, the shape of the opening 131h is substantially rectangular, but the shape of the opening 131h is not limited to substantially rectangular. The shape of the opening 131h may be, for example, a substantially circular shape.
In the present embodiment, although the plurality of openings 131h are arranged in parallel along the Z-axis direction, the plurality of openings 131h may be arranged in parallel along the direction in which the second trough portion 131a extends.
In the present embodiment, the number of the openings 131h is several, but the number of the openings 131h may be 1. In this case, the opening 131h is provided in any one of the plurality of second trough portions 131 a.
In the present embodiment, the configuration in which the collar portion 13 has the female screw portion 131 and the outer shell portion 211 has the male screw portion 211a has been described, but the female screw portion 131 and the male screw portion 211a may be replaced with each other. Specifically, the outer shell 211 may have the female screw portion 131 and the mouth ring portion 13 may have the male screw portion 211 a.
In the present embodiment, the configuration in which the first terminal 11 is a positive terminal and the second terminal 12 is a negative terminal has been described, but the first terminal 11 may be a negative terminal and the second terminal 12 may be a positive terminal.
[ second embodiment ]
Next, the structure of the lamp socket 1 according to the second embodiment will be described with reference to fig. 2, 4a, and 6. In the second embodiment, the shape of the second terminal 12 is different from that in the first embodiment. In the following, the second embodiment will be described about the differences from the first embodiment, and the description thereof will not be repeated.
Fig. 6 is a schematic cross-sectional view of the second terminal 12 and its vicinity according to the second embodiment.
As shown in fig. 6, the second terminal 12 has a base portion 123 and a protruding portion 124. The protruding portion 124 is provided at a position opposite to the opening 131h in the base portion 123. The projecting portion 124 projects from the base portion 123. Specifically, the protruding portion 124 protrudes from the base portion 123 toward the radially inner side (the second space S2) of the female screw portion 131. When the protruding portion 124 is viewed from the second space S2, the shape of the protruding portion 124 corresponds to the shape of the opening 131h described with reference to fig. 4 a. In the present embodiment, when the protruding portion 124 is viewed from the second space S2, the shape of the protruding portion 124 is substantially a parallelogram. When the protrusion 124 is viewed in the circumferential direction of the female screw 131, the protrusion 124 has a substantially hemispherical shape.
The protruding portion 124 is exposed from the opening 131 h. Specifically, the protrusion 124 protrudes toward the radially inner side (the second space S2) of the female screw portion 131 through the opening 131 h. The tip of the protruding portion 124 is closer to the base portion 123 than the tip of the second crest portion 131 b.
As described above, the second embodiment is explained. According to the present embodiment, the second terminal 12 has the protruding portion 124. The protruding portion 124 is exposed from the opening 131 h. Therefore, the male screw portion 211a (the first crest portion 211b) of the housing portion 211 and the second terminal 12 are easily contacted. This ensures the electrical connection between the socket 1 and the bulb 2 (see fig. 2).
In the present embodiment, the protrusion 124 protrudes radially inward of the female screw 131 through the opening 131 h. Thereby, the electrical connection of the lamp holder 1 and the bulb 2 becomes more reliable.
In the present embodiment, the protruding portion 124 protrudes radially inward of the female screw portion 131 through the opening 131h, but the protruding portion 124 may not pass through the opening 131h as long as the male screw portion 211a (first crest portion 211b) of the outer shell portion 211 comes into contact with the second terminal 12.
In the present embodiment, when the protrusion 124 is viewed in the circumferential direction of the female screw 131, the shape of the protrusion 124 is substantially hemispherical, but is not limited to hemispherical. For example, when the protrusion 124 is viewed in the circumferential direction of the female screw 131, the protrusion 124 may have a substantially rectangular shape.
[ third embodiment ]
Next, the structure of the lamp socket 1 according to the third embodiment will be described with reference to fig. 2, 3a, 7a, and 7 b. The third embodiment is different from the first and second embodiments in that the base 1 further includes the biasing portion 14. In the following, with respect to the third embodiment, matters different from those of the first and second embodiments will be described, and descriptions overlapping with those of the first and second embodiments will be omitted.
Fig. 7a and 7b are schematic cross-sectional views of the second terminal 12 and its vicinity according to the third embodiment. Fig. 7b is a modification of the second terminal 12 according to the third embodiment.
As shown in fig. 7a, the socket 1 further includes a biasing portion 14. The urging portion 14 is, for example, a spring.
The biasing portion 14 is disposed between the side wall 101 and the second terminal 12. Specifically, the biasing portion 14 is disposed at a position facing the bezel portion 13 so as to sandwich the second terminal 12. In the example of fig. 7a, the biasing portion 14 is disposed at a position facing the opening 131h so as to sandwich the second terminal 12.
The biasing portion 14 biases the opposing portion 121 of the second terminal 12 in the biasing direction F1. The biasing direction F1 is a direction toward the radially inner side of the female screw portion 131. In other words, the biasing direction F1 is a direction toward the opening 131 h.
As described above, the third embodiment is explained. According to the present embodiment, the biasing portion 14 biases the opposing portion 121 of the second terminal 12 in the biasing direction F1. As a result, the opposing portion 121 can be brought closer to the opening 131 h. Thus, the male screw portion 211a (first crest portion 211b) of the housing portion 211 described with reference to fig. 2 and the second terminal 12 described with reference to fig. 3a are easily brought into contact with each other through the opening 131 h. Thus, the electrical connection of the lamp holder 1 and the bulb 2 becomes more reliable.
Since the opposing portion 121 of the second terminal 12 is biased by the biasing portion 14, the second terminal 12 can move in a direction away from the opening 131h when the first crest portion 211b contacts the second terminal 12. As a result, dimensional tolerances occurring in at least one of the male screw portion 211a of the base portion 21 and the female screw portion 131 of the collar portion 13 can be absorbed. Therefore, the male screw portion 211a of the base portion 21 can be easily screwed with the female screw portion 131 of the collar portion 13. Also, both the electrical and mechanical connection of the lamp holder 1 to the lamp bulb 2 becomes more reliable.
In the present embodiment, the case where the number of the biasing portions 14 is 1 has been described, but the number of the biasing portions 14 may be several. Thereby, the male screw portion 211a (first crest portion 211b) of the housing portion 211 and the second terminal 12 are more easily brought into contact. Further, the male screw portion 211a of the base portion 21 can be easily screwed with the female screw portion 131 of the collar portion 13. Thus, both the electrical and mechanical connection of the lamp holder 1 to the lamp bulb 2 becomes more reliable.
In the present embodiment, the case where the biasing portion 14 is disposed at a position facing the opening 131h with the second terminal 12 interposed therebetween is described, but the position at which the biasing portion 14 is disposed is not limited to this. The biasing portion 14 may be any portion as long as the biasing portion 14 can bias the second terminal 12 in the biasing direction F1, and the biasing portion 14 may be disposed at a position other than a position facing the opening 131h so as to sandwich the second terminal 12, for example.
In the present embodiment, the case where the biasing portion 14 is disposed between the second terminal 12 and the base 1 is described, but the biasing portion 14 may be provided on the second terminal 12. When the biasing portion 14 is provided on the second terminal 12, the second terminal 12 has an elastic force. The biasing portion 14 is constituted by a bent portion of the second terminal 12 in fig. 7b, for example. The second terminal 12 is, for example, a plate spring.
[ fourth embodiment ]
Next, the structure of the lamp socket 1 according to the fourth embodiment will be described with reference to fig. 2, 5a, and 8. The fourth embodiment is different from the first to third embodiments in that the first terminal 11 and the second terminal 12 are connected by the connecting member 15. In the following, with respect to the fourth embodiment, matters different from the first to third embodiments will be described, and descriptions overlapping with the first to third embodiments will be omitted.
Fig. 8 is a partial schematic view of a lamp socket 1 according to a fourth embodiment. As shown in fig. 8, the socket 1 further includes a connecting member 15 and a support member 16. In the lamp socket 1 according to the fourth embodiment, the first tightening member B1 and the second tightening member B2 described with reference to fig. 3 are omitted. The first terminal 11 is electrically connected to an external power supply device. The second terminal 12 is electrically connected to an external power supply device. For example, the first terminal 11 and the second terminal 12 are electrically connected to an external power supply device through pins.
The connecting member 15 is an insulating member. The connecting member 15 connects the first terminal 11 and the second terminal 12. The connecting member 15 mechanically connects the first terminal 11 and the second terminal 12. The connecting member 15 contains a resin material, for example. The resin includes, for example, a PBT resin, a PET resin, and a PC resin. The connecting member 15 is supported by the support member 16 so as to be swingable. The support member 16 is provided on the partition wall 102, for example.
As shown in fig. 8, when the center contact 213 and the first terminal 11 described with reference to fig. 2 are not in contact with each other, the second terminal 12 is spaced apart from the opening 131 h. On the other hand, when the center contact 213 is in contact with the first terminal 11, the second terminal 12 approaches the opening 131h and comes into contact with the outer peripheral surface of the bezel portion 13.
Specifically, as described with reference to fig. 5a, when the center contact 213 contacts and presses the first terminal 11, the tip portion of the first terminal 11 moves in the + Z direction. When the tip end portion of the first terminal 11 moves in the + Z direction, the connecting member 15 and the second terminal 12 swing about the support member 16 as a fulcrum. Specifically, the second terminal 12 approaches the opening 131h, and the second terminal 12 is swung so as to contact the outer peripheral surface of the bezel 13.
As described above, the fourth embodiment is explained. According to the present embodiment, when the center contact 213 and the first terminal 11 are not in contact with each other, the second terminal 12 is spaced apart from the opening 131 h. On the other hand, when the center contact 213 is in contact with the first terminal 11, the second terminal 12 approaches the opening 131 h. In other words, as long as the center contact 213 does not contact the first terminal 11, the second terminal 12 does not approach the opening 131 h. Specifically, as long as the center contact 213 does not contact the first terminal 11, the second terminal 12 does not contact the outer peripheral surface of the collar portion 13. Therefore, the electric conductor other than the bulb 2 is suppressed from simultaneously contacting the first terminal 11 and the second terminal 12 when the bulb 2 is mounted in the lamp socket 1. As a result, the occurrence of short circuit is further suppressed.
In the present embodiment, after the center contact 213 comes into contact with the first terminal 11, the second terminal 12 comes into contact with the outer peripheral surface of the bezel portion 13. This facilitates contact between the male screw portion 211a (first crest portion 211b) of the housing portion 211 and the second terminal 12. Thus, the electrical connection of the lamp holder 1 to the bulb 2 becomes more reliable.
In addition, the first terminal 11 preferably has no elastic force. By making the first terminal 11 have no spring force, the connecting member 15 and the second terminal 12 are easily swung when the tip portion of the first terminal 11 moves in the + Z direction. In other words, the second terminals 12 more reliably approach the opening portions 131 h. Specifically, the second terminals 12 more reliably contact the outer peripheral surface of the rim portion 13. Thereby, the male screw portion 211a (the first crest portion 211b) of the housing portion 211 and the second terminal 12 are more reliably contacted. Thus, the electrical connection of the lamp holder 1 to the bulb 2 becomes more reliable. However, when the first terminal 11 has no elastic force, it is preferable that at least the distal end portion of the first terminal 11 be biased in the-Z direction by a biasing member such as a spring. Thereby, the electrical connection of the first terminal 11 and the center contact 213 becomes more reliable.
In the present embodiment, the structure in which the socket 1 includes the connecting member 15 is described, but the present invention is not limited to this structure. For example, the socket 1 may include a contact detection unit that electrically detects that the center contact 213 is in contact with the first terminal 11. When the contact detection unit detects that the center contact 213 is in contact with the first terminal 11, the second terminal 12 is moved to approach the opening 131 h.
[ fifth embodiment ]
Next, a structure of the lamp socket 1 according to the fifth embodiment will be described with reference to fig. 9. In the fifth embodiment, the arrangement position of the second terminals 12 is different from those in the first to fourth embodiments. In the following, regarding the fifth embodiment, matters different from the first to fourth embodiments will be described, and descriptions overlapping with the first to fourth embodiments will be omitted.
Fig. 9 is a schematic diagram of the second terminal 12 and its vicinity according to the fifth embodiment.
As shown in fig. 9, in the present embodiment, the female screw portion 131 does not have the opening 131 h.
The second terminal 12 according to the present embodiment is disposed radially inward of the female portion 131. In the present embodiment, the second terminals 12 are disposed at positions corresponding to the second trough portions 131a of the female screw portion 131 by being arranged continuously in a spiral shape along the second trough portions 131 a. Specifically, the second terminal 12 has a spiral extending shape. The second terminals 12 are disposed along the second trough portions 131 a.
As described above, the fifth embodiment is explained. According to the present embodiment, the second terminal 12 is disposed radially inward of the female screw portion 131. The second terminals 12 are continuously arranged in a spiral shape along the second trough portions 131 a. Therefore, the male screw portion 211a (the first crest portion 211b) of the housing portion 211 is easily brought into contact with the second terminal 12. This ensures the electrical connection between the socket 1 and the bulb 2 (see fig. 2).
In the present embodiment, the configuration in which the second terminal 12 is disposed radially inward of the female screw portion 131 is described, but the second terminal 12 may be configured as the second trough portion 131a of the female screw portion 131 as shown in fig. 10, for example. Fig. 10 is another schematic cross-sectional view of the second terminal 12 and its vicinity according to the fifth embodiment. In the configuration of fig. 10, the female screw portion 131 has a spirally continuous opening. The second terminal 12 is disposed in an opening of the female screw portion 131. For example, the second terminal 12 is fitted in an opening of the female screw portion 131.
In the present embodiment, the second terminals 12 are described as being continuously arranged in a spiral shape along the second trough portions 131a, but the second terminals 12 may be arranged discontinuously along the second trough portions 131 a.
[ sixth embodiment ]
Next, a structure of the lamp socket 1 according to the sixth embodiment will be described with reference to fig. 11. The sixth embodiment is different from the first to fifth embodiments in that the socket 1 includes the adjusting portion 17. In the following, with respect to the sixth embodiment, the matters different from the first to fifth embodiments will be described, and the description overlapping with the first to fifth embodiments will be omitted.
Fig. 11 is a schematic configuration diagram of a lamp socket 1 according to a sixth embodiment. In particular, fig. 11 is a schematic cross-sectional view of the lamp holder 1. As shown in fig. 11, the socket 1 further includes an adjusting unit 17. The adjustment unit 17 is connected in series to the one terminal 11 and the second terminal 12. In the present embodiment, the adjustment unit 17 is connected between the external power supply device and the first terminal 11. The adjustment unit 17 includes a first adjustment unit 171 and a second adjustment unit 172.
The first adjustment unit 171 adjusts the current value of the current supplied to the lamp 2 based on the current value of the current flowing between the first terminal 11 and the second terminal 12. In the present embodiment, the first adjustment unit 171 adjusts the current value of the current supplied to the bulb 2 based on the current value of the current flowing through the first terminal 11. Specifically, the first adjustment unit 171 adjusts the current value of the current supplied to the lamp 2 when the current value of the current flowing through the first terminal 11 is equal to or greater than the first threshold value.
In the present embodiment, the first adjustment unit 171 cuts off the current supplied to the lamp 2 when the current value of the current flowing between the first terminal 11 and the second terminal 12 becomes equal to or greater than the first threshold value. The first adjusting unit 171 of the present embodiment includes a reset-type adjusting member. For example, the first adjustment section 171 includes a current sensor and a first switch. The first switch cuts off the current supplied to the bulb 2 according to the current value measured by the current sensor.
The second adjustment unit 172 adjusts the current value of the current supplied to the lamp 2 in accordance with the temperature of the lamp socket 1. Specifically, the second adjustment unit 172 adjusts the current value of the current supplied to the lamp 2 when the temperature of the lamp socket 1 becomes equal to or higher than the second threshold value.
In the present embodiment, the second adjustment unit 172 cuts off the current supplied to the lamp 2 when the temperature of the socket 1 becomes equal to or higher than the second threshold value. The second adjustment unit 172 of the present embodiment includes, for example, a reset-type adjustment member. For example, the second adjustment unit 172 is a thermostat. Alternatively, second adjustment unit 172 includes a temperature sensor and a second switch. The second switch cuts off the current supplied to the bulb 2 according to the temperature measured by the temperature sensor. The temperature sensor is, for example, a positive temperature coefficient thermistor.
As described above, the sixth embodiment is explained. According to the present embodiment, the first adjustment unit 171 cuts off the current supplied to the bulb 2 according to the current value of the current flowing between the first terminal 11 and the second terminal 12. This can suppress the lamp, the mounting specification of which is not suitable for the socket 1, from flowing through between the first terminal 11 and the second terminal 12. As a result, the temperature of the socket 1 can be suppressed from increasing, and for example, the resin contained in the socket 1 can be suppressed from melting and deforming.
In the present embodiment, the second adjustment unit 172 cuts off the current supplied to the lamp 2 in accordance with the temperature of the socket 1. This can suppress the lamp, the mounting specification of which is not suitable for the socket 1, from flowing through between the first terminal 11 and the second terminal 12. As a result, the temperature of the socket 1 can be suppressed from increasing, and for example, the resin contained in the socket 1 can be suppressed from melting and deforming.
In the present embodiment, the case where the adjustment portion 17 includes the first adjustment portion 171 and the second adjustment portion 172 has been described, but the adjustment portion 17 may include only one of the first adjustment portion 171 and the second adjustment portion 172.
In the present embodiment, the case where the first adjustment unit 171 includes the reset-type adjustment member has been described, but the first adjustment unit 171 may include a non-reset-type adjustment member such as a current fuse.
Further, although the case where the second adjustment unit 172 includes the reset-type adjustment member has been described, the second adjustment unit 172 may include a non-reset-type adjustment member such as a thermal fuse.
[ seventh embodiment ]
Next, a lighting fixture 100 according to a seventh embodiment will be described with reference to fig. 12. Fig. 12 shows a lighting fixture 100 according to a seventh embodiment. The lighting fixture 100 is mounted on a mounting surface such as a ceiling surface C. In the present embodiment, the lighting fixture 100 is used by being suspended from the ceiling surface C. The lighting fixture 100 is, for example, a ceiling lamp.
As shown in fig. 12, the lighting fixture 100 includes a socket 1, a base 3, wires 4, a housing 5, and a cover 6. The lighting fixture 100 of the present embodiment further includes a bulb 2. The lamp socket 1 is an example of a socket unit. In the following description of the present embodiment, the side of the lighting fixture 100 on which the base portion 3 is provided is referred to as "the upper side of the lighting fixture 100", and the opposite side is referred to as "the lower side of the lighting fixture 100". In the present embodiment, the bulb 2, the case 5, and the globe 6 constitute the fixture body 10.
The base portion 3 is fixed to the ceiling surface C. The electric wire 4 is suspended from the base body 3. The wire 4 electrically connects the ceiling lamp socket provided on the ceiling surface C and the lamp socket 1. The lamp socket 1 is disposed inside the housing 5. The socket 1 may or may not be integral with the housing 5.
A lamp cover 6 is mounted on the housing 5. The lamp cover 6 is configured to cover an upper periphery of the bulb 2. The globe 6 controls light emitted from the bulb 2.
As described above, the seventh embodiment is explained. In a general lamp socket, the female screw portion is formed of a conductive member. Therefore, when the bulb 2 is mounted in the socket 1, the electric conductor other than the bulb 2 may come into contact with the positive electrode terminal and the negative electrode terminal at the same time. When a conductor other than the bulb 2 contacts the positive electrode terminal and the negative electrode terminal at the same time, the positive electrode terminal and the negative electrode terminal are conducted through the conductor, and a short circuit may occur. According to the present embodiment, the female screw portion 131 is an electrically non-conductive member. Therefore, the electric conductor other than the bulb 2 is suppressed from simultaneously contacting the first terminal 11 and the second terminal 12 when the bulb 2 is mounted in the lamp socket 1. Therefore, the first terminal 11 and the second terminal 12 are prevented from being electrically connected by the conductor. As a result, the occurrence of short circuits is suppressed.
In the present embodiment, the lighting apparatus 100 is a ceiling lamp, but the present invention is also applicable to a down lamp, for example.
In the present embodiment, the case where the lighting fixture 100 includes the bulb 2 is described, but the lighting fixture 100 may not include the bulb 2.
As described above, the embodiments of the present invention are explained with reference to the drawings (fig. 1 to 12). However, the present invention is not limited to the above-described embodiments, and can be implemented in various ways within a scope not departing from the gist thereof. The shape, material, and the like shown in the above embodiments are only examples, and are not particularly limited, and various modifications can be made without substantially departing from the effect of the present invention.
For example, although the embodiment of the present invention has been described with respect to the case where the bulb 2 is an LED bulb, the bulb 2 is not limited to an LED bulb. The lamp bulb 2 may also be an incandescent lamp, for example.
In the embodiments of the present invention, the case where the light-emitting element includes an LED element is described, but the light-emitting element may include an organic EL (Electro-Luminescence) element, for example.
The matters described in the first to seventh embodiments may be combined as appropriate. For example, the matters described in embodiment two and the matters described in embodiment six may be combined.
[ industrial availability ]
The utility model discloses for example can be used to the technical field of lamp stand. The present invention can be used in the field of lighting devices.
Claims (10)
1. A lamp socket in which a light source unit is detachably mounted, characterized by comprising:
a collar portion engaged with a cap portion in the light source unit;
a first terminal; and
a second terminal having a polarity different from a polarity of the first terminal,
the collar part is provided with a non-conductive thread part, the lamp holder part is in threaded connection with the thread part,
the threaded portion has a thread trough portion,
the second terminal is disposed at a position corresponding to the trough portion.
2. The lamp socket according to claim 1,
the threaded portion has an opening portion provided in the trough portion,
the second terminal is provided at a position facing the opening.
3. The lamp socket according to claim 2,
the second terminal has a base portion and a protruding portion protruding from the base portion,
the protruding portion is provided in the base portion at a position opposite to the opening portion.
4. A lamp holder as claimed in claim 3,
the threaded portion further has a crest portion projecting from the trough portion,
the tip of the protruding portion is closer to the base portion than the tip of the spiral crest portion.
5. The lamp socket according to claim 4,
the tip of the protruding portion is closer to the tip of the spiral crest portion than the opening portion.
6. A lamp holder as claimed in any one of claims 2 to 5,
the terminal device further includes a biasing portion that biases the second terminal in a direction toward the opening.
7. A lamp holder as claimed in any one of claims 2 to 5,
the second terminal is spaced apart from the opening portion by a distance in a case where the base portion is not in contact with the first terminal,
the second terminal approaches the opening portion when the base portion is in contact with the first terminal.
8. A lamp holder as claimed in any one of claims 1 to 5,
the light source device further includes a first adjustment unit that adjusts the current supplied to the light source unit according to a current value of the current flowing between the first terminal and the second terminal.
9. A lamp holder as claimed in any one of claims 1 to 5,
the lamp further includes a second adjusting unit that adjusts a current value of the current supplied to the light source unit according to the temperature of the lamp socket.
10. A lighting device is provided, which comprises a lighting device,
comprises a lamp holder part and an appliance body,
the light source unit is detachably mounted in the lamp socket part,
the lamp base portion is disposed in the appliance main body,
the lamp holder portion includes:
a collar portion engaged with a cap portion in the light source unit;
a first terminal; and
a second terminal having a polarity different from a polarity of the first terminal,
the collar part is provided with a non-conductive thread part, the lamp holder part is in threaded connection with the thread part,
the threaded portion has a thread trough portion,
the second terminal is disposed at a position corresponding to the trough portion.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018-196626 | 2018-10-18 | ||
| JP2018196626A JP7117214B2 (en) | 2018-10-18 | 2018-10-18 | sockets and lighting fixtures |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210443778U true CN210443778U (en) | 2020-05-01 |
Family
ID=70387480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921521499.5U Active CN210443778U (en) | 2018-10-18 | 2019-09-12 | Lamp holder and lighting fixture |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP7117214B2 (en) |
| CN (1) | CN210443778U (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5490977U (en) * | 1977-12-10 | 1979-06-27 | ||
| US8071079B2 (en) | 2003-05-16 | 2011-12-06 | Dow Corning Corporation | Personal care applications of emulsions containing elastomeric silanes and siloxanes with nitrogen atoms |
| JP2012028278A (en) * | 2010-07-28 | 2012-02-09 | Mitsubishi Electric Corp | Socket for light source and lighting apparatus |
| JP2017010693A (en) * | 2015-06-18 | 2017-01-12 | アイリスオーヤマ株式会社 | Lighting device and socket |
-
2018
- 2018-10-18 JP JP2018196626A patent/JP7117214B2/en active Active
-
2019
- 2019-09-12 CN CN201921521499.5U patent/CN210443778U/en active Active
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| Publication number | Publication date |
|---|---|
| JP7117214B2 (en) | 2022-08-12 |
| JP2020064777A (en) | 2020-04-23 |
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