JP2011171228A - Led lamp - Google Patents

Abstract

Provided is an LED lamp capable of constituting a lamp with various light outputs by connecting one kind of lamp.
An LED lamp includes a circuit board on which a light-emitting diode is mounted, and a tubular circuit that houses the circuit board and transmits light emitted from the light-emitting diode from the translucent portion to the outside. The storage container 2, the bases 7 provided on both sides of the storage container 2, the base pins 11 provided in the bases 7, and the base pins 11 provided in the base 7 and provided in the other LED lamps 1 are inserted. Insertion ports 12 are provided in the respective caps 7 and are electrically connected to the cap pins 11 of the caps 7 and are also in electrical contact with the cap pins 11 of other LED lamps 1 inserted into the insertion ports 12. The light emitting diode 6 is electrically connected between the base pin 11 of the base 7 on both sides and the contact 8.
[Selection] Figure 1

Description

  The present invention relates to an LED lamp using a light emitting diode (LED) as a light source.

  In recent years, LED lamps have been provided that have lower power consumption and longer life than fluorescent lamps (see Patent Document 1).

  A lamp having a base compatible with a straight tube fluorescent lamp is provided so that such a LED lamp can be installed by replacing it with a straight tube fluorescent lamp used in existing facility lighting. Thus, a lighting circuit for an LED lamp is installed in place of the electronic ballast included in the existing lighting fixture, and the LED lamp is attached to the lighting fixture, so that the light source of the existing facility lighting is changed to the LED lamp. can do.

JP 2008-77899 A

  By the way, some straight tube fluorescent lamps have rated lamp powers of 16 W, 32 W, and 64 W. Based on the tube length of a fluorescent lamp with a rated lamp power of 16 W (about 2 feet [ft]), the fluorescent lamps of 32 W and 64 W are used. Respectively had tube lengths of 4 ft and 8 ft. Therefore, when a straight tube type LED lamp is prepared as an alternative to a straight tube fluorescent lamp, a plurality of types of LED lamps having the same brightness and the same length as the fluorescent lamps with rated lamp powers of 16 W, 32 W and 64 W are provided. It was necessary to prepare. For this reason, there are problems that the number of LED lamp types increases, the cost for inventory management increases, and the production amount per type decreases, resulting in high costs.

  The present invention has been made in view of the above reasons, and an object of the present invention is to provide an LED lamp capable of constituting a lamp with various light outputs by connecting one kind of lamp.

  In order to solve the above problems, an LED lamp according to a first aspect of the present invention includes a circuit board on which a light-emitting diode is mounted as a light source, and the circuit board is housed in the interior and transmits light emitted from the light-emitting diode to the outside. Tubular storage container provided with at least a part of the translucent part, bases provided on both sides of the storage container, base pins provided in each base, bases provided in other bases and provided in other LED lamps An insertion slot into which a pin is inserted, and a contact provided in each base, electrically connected to the base pin, and in contact with a base pin of another LED lamp inserted into the insertion slot The light emitting diode is electrically connected between the cap pins of the caps on both sides.

  The LED lamp of the second invention is the LED lamp according to the first invention, wherein the base is rotatably attached to the storage container, and the two base pins are provided at symmetrical positions with respect to the center of rotation. In addition, the two insertion openings are provided at positions symmetrical with respect to the rotation center, and the two base pins and the two insertion openings are provided on the same circumference around the rotation center. Features.

  In the LED lamp of the third invention, in the first invention, the base pin provided in one base and the insertion port provided in the other base are provided at a position where they overlap each other in the connecting direction of the LED lamp. It is characterized by that.

  According to a fourth aspect of the present invention, there is provided at least a part of a circuit board on which a light emitting diode is mounted as a light source and a circuit board that houses the circuit board inside and transmits light emitted from the light emitting diode outside. A tubular storage container provided, a base provided on both sides of the storage container, a base pin provided on one base, and a base pin provided on the other base and provided with another LED lamp are inserted. Provided with an insertion port and a contact provided in the other base and electrically contacting the base pin of another LED lamp inserted into the insertion port, and a light emitting diode is electrically connected between the base pin and the contact It is characterized by that.

  ADVANTAGE OF THE INVENTION According to this invention, the LED lamp which can comprise the lamp | ramp of various light outputs by connecting one type of lamp can be provided.

The LED lamp of Embodiment 1 is shown, (a) is an external appearance perspective view, (b) is explanatory drawing of a nozzle | cap | die part. (A) is an external appearance perspective view of the state which connected the LED lamp same as the above, (b) is explanatory drawing of the state before connection. It is explanatory drawing which expanded the nozzle | cap | die part of the LED lamp same as the above. The LED lamp of Embodiment 2 is shown, (a) is a front view of a nozzle | cap | die part, (b) is a perspective view of a nozzle | cap | die part. The same LED lamp is shown, (a) is explanatory drawing of the state before a connection, (b) is an external appearance perspective view of the state which connected the LED lamp. The LED lamp of Embodiment 3 is shown, (a) (b) is explanatory drawing of a nozzle | cap | die part, (c) is explanatory drawing of the state which connected two LED lamps and was attached to the lighting fixture.

  Hereinafter, embodiments of an LED lamp according to the present invention will be described with reference to the drawings.

(Embodiment 1)
FIG. 1A shows an external perspective view of the LED lamp 1 of Embodiment 1, and FIG.

  The LED lamp 1 according to the present embodiment is a straight tube lamp, and includes a straight tubular storage container 2 provided with G13-type caps 7 used at the both ends, which are used for a straight tube fluorescent lamp. A rectangular plate-like circuit board 5 is accommodated inside the storage container 2 along the axial center of the storage container 2. The overall length of the circuit board 5 is formed to be slightly smaller than the overall length of the storage container 2, and a plurality of light emitting diodes 6 are mounted on one surface of the circuit board 5 at a predetermined interval in the longitudinal direction.

  The storage container 2 is formed in a cylindrical shape by joining two halves that divide the cylinder in a plane that passes through the axial center of the cylinder, and one of the halves becomes the translucent part 3 and the other half. The body becomes the heat radiating part 4. The translucent part 3 is formed of a synthetic resin having translucency. The light-transmitting portion 3 has a diffusibility by, for example, forming a fine uneven shape on the surface or adding a light diffusing material in the transparent resin, and diffuses light from the light-emitting diode 6. Thus, uniform light is emitted from the entire light transmitting portion 3.

  The heat radiating part 4 is thermally coupled to the light emitting diode 6 mounted on the circuit board 5, and the heat generated in the light emitting diode 6 during lighting is released to the outside through the heat radiating part 4. The circuit board 5 is housed in the vicinity of the boundary between the light transmitting portion 3 and the heat radiating portion 4 with the mounting surface of the light emitting diode 6 facing the light transmitting portion 3.

  The bases 7 on both sides are formed in a cylindrical shape with one end closed, are provided on both sides of the tubular storage container 2, and are attached to the storage container 2 so as to be rotatable around the central axis of the cylinder. A conventionally known structure may be used as a mechanism for rotatably supporting the base 7. For example, by guiding a protrusion provided on the inner surface of the cylindrical portion of the base 7 in a guide groove (not shown) formed along the circumferential direction on the outer peripheral surface of the storage container 2, the base 7 is attached to the storage container 2. On the other hand, it can be mounted rotatably.

  Each base 7 is provided with two round bar-like base pins 11, 11 extending along the axial direction at positions symmetrical to the central axis (rotation center). Each base 7 is provided with round hole-like insertion openings 12 and 12 into which the base pins of other LED lamps are inserted at positions symmetrical with respect to the central axis. Here, the two cap pins 11 and the two insertion ports 12 are provided on the same circumference around the central axis, and a line segment connecting the two cap pins 11 and the two insertion ports. The line segments connecting 12 are orthogonal to each other. Further, inside the base 7, contacts 8 that are electrically connected to the base pins 11 of other LED lamps 1 inserted through the insertion openings 12 are accommodated at positions facing the respective insertion openings 12. In the present embodiment, the two cap pins 11 and the two contacts 8 are electrically connected to each other via the lead wires 9. The base pin 11 and the contact 8 provided on one base 7 are connected to the anode side of the light emitting diode 6 via the lead wire 9, and the base pin 11 and the contact 8 provided on the other base 7 connect the lead wire 9. Via the cathode side of the light emitting diode 6. That is, a plurality of light emitting diodes 6 are connected in series between the base pins 11 and the contacts 8 provided on the bases 7 on both sides.

  In order to reduce the stress applied to the connecting portion between the lead wire 9 and the circuit board 5 when the base 7 is rotated, the lead wire 9 connecting the base pin 11 or the contact 8 and the circuit board 5 is used. It is preferable that the length has a sufficient margin. Further, in order to regulate the rotation range of the base 7, it is also preferable to provide the base 7 and the storage container 2 with protrusions that come into contact with each other when the base 7 rotates to the end of the rotation range and restrict further rotation. Further, means for electrically connecting the base pin 11 and the contact 8 to the circuit board 5 is not limited to the lead wire 9, for example, a conductive provided along the circumferential direction inside the base 7. Electrical connection may be performed by bringing a slider provided in the storage container 2 into contact with the plate.

Next, a method for connecting the LED lamps 1 will be described with reference to FIGS. As shown in FIG. 2 (b), the caps 7 of the two LED lamps 1, 1 face each other, and the cap pin 11 of one LED lamp 1 is inserted into the insertion port 12 of the other LED lamp 1. At this time, the base pins 11 inserted inside from the insertion port 12 are connected to the contacts 8, whereby the circuit boards 5 and 5 housed in both the LED lamps 1 and 1 are connected in series. Further, the right LED lamp 1 in FIG. 2B is in a state of being rotated 90 degrees with respect to the left LED lamp 1 and the translucent part 3 is oriented sideways. One storage container 2 is rotated 90 degrees in the direction of arrow A with respect to the base 7. When the storage container 2 is thus rotated, the translucent part 3 faces downward as shown in FIG. 2A, and the base pins 11 provided on the bases 7 and 7 on both left and right ends are arranged at the same position. Therefore, the two connected LED lamps 1 and 1 can be mounted on the socket 21 of the lighting fixture 20. Note that the number of LED lamps 1 to be connected is not limited to two, and a plurality of LED lamps 1 may be connected and used so as to obtain a desired brightness. When the base pin of the lamp is inserted into the insertion port 12 provided in the base 7, it is electrically connected to the base pin 11 of the base 7 via the contact 8. They can be connected in a state of being electrically connected to each other. Therefore, it is possible to provide LED lamps 1 having various light outputs by connecting a plurality of one type of LED lamps 1. For example, in accordance with an existing straight tube fluorescent lamp, an LED lamp 1 having a length of 1 foot or 2 feet is basically used, and a plurality of LED lamps 1 are connected to form an LED having a desired length (that is, brightness). The lamp 1 can be realized. Moreover, the cost for inventory management can be reduced by reducing the types of the LED lamps 1, and the cost can be reduced by increasing the number of LED lamps 1 having a basic length (light output).

  Moreover, in this embodiment, since the nozzle | cap | die 7 can rotate with respect to the storage container 2, the direction of the storage container 2 can be rotated in a desired direction. When the light emitting diode 6 is mounted only on one surface of the circuit board 5 stored in the storage container 2, light is irradiated only from the light emitting diode 6 in a predetermined direction, but the storage container 2 can be rotated with respect to the base 7. Therefore, the light can be distributed in a desired direction.

  Further, as shown in FIG. 3, a base 5 a whose surface is inclined so that the protruding amount from the substrate 5 becomes larger as the distance from the base 7 is increased at the mounting positions of the light emitting diodes 6 a located at both ends of the plurality of light emitting diodes 6. And the light emitting diode 6 may be mounted on the base 5a. Since the optical axis of the light emitting diode 6 mounted on the pedestal 5a is inclined to the base 7 side, the light emission of the light emitting diode 6 is irradiated to the base 7 side. Therefore, when the plurality of LED lamps 1 and 1 are connected, it is possible to suppress the vicinity of the base 7 (part D in FIG. 2A) that is a connection part from becoming dark.

  In the present embodiment, a plurality of light emitting diodes 6 are mounted on the circuit board 5, but the number of the light emitting diodes 6 may be one, and the light emitting diodes can be changed by changing the number of LED lamps 1 to be connected. The number of 6 can be increased or decreased by 1 unit.

  Moreover, the number and arrangement | positioning of the nozzle | cap | die pin 11 and the insertion port 12 are not limited to said form, It can change suitably.

(Embodiment 2)
The second embodiment will be described with reference to FIGS. 4 and 5. In addition, the same code | symbol is attached | subjected to the component which is common in Embodiment 1, the description is abbreviate | omitted, and only the characteristic part of this embodiment is demonstrated.

  In the first embodiment described above, the base 7 is rotatably attached to the storage container 2, and each of the base 7 has two base pins 11 and an insertion port 12 centered on the central axis (rotation center) of the base 7. Are provided on the same circumference.

  On the other hand, in this embodiment, the base 7 is fixed to the storage container 2, and each base 7 is provided with two base pins 11 and two insertion ports 12. As shown in FIG. 4A, the two base pins 11 and the insertion port 12 provided on the base 7 are provided on the same straight line passing through the center of the disc-shaped base 7. Of the bases 7 on both sides, the two base pins 11, 11 provided on one base 7 are connected to the two insertion ports 12, 12 provided on the other base 7 and the LED lamp 1. They are provided at positions that overlap each other in the direction (axial direction). Also, the two insertion openings 12, 12 provided in one base 7 are also provided at positions where they overlap each other in the connecting direction of the LED lamp 1 with the two base pins 11, 11 provided in the other base 7. It has been. Therefore, when the bases 7 of the two LED lamps 1 are connected to each other, the base pin 11 provided on one base 7 is inserted into the insertion opening 12 provided on the other base 7.

  In addition, a contact 8 is disposed inside the storage container 2 at a position facing the insertion port 12, and the base pin 11 and the contact 8 are electrically connected to the circuit board 5 through lead wires 9. That is, the circuit board 5 is electrically connected between the base pin 11 and the contact 8 provided on one base 7 and the base pin 11 and the contact 8 provided on the other base 7.

Next, a method for connecting the LED lamps 1 will be described with reference to FIGS. As shown in FIG. 5A, the caps 7 of the two LED lamps 1, 1 face each other, and the cap pin 11 provided on the cap 7 of one LED lamp 1 is connected to the other LED lamp 1. It is inserted into the insertion slot 12 provided in the base 7. At this time, since the base pin inserted into the insertion port 12 of the base 7 is electrically connected to the base pin 11 of the base 7 via the contact 8, the circuit accommodated in both the LED lamps 1, 1. Substrates 5 and 5 are connected in series. Therefore, the two connected LED lamps 1 and 1 can be attached to the socket (not shown) of the lighting fixture. Note that the number of LED lamps 1 to be connected is not limited to two, and a plurality of LED lamps 1 may be connected and used so as to obtain a desired brightness. When the base pin of the lamp is inserted into the insertion port 12 provided in the base 7, it is electrically connected to the base pin 11 of the base 7 via the contact 8. They can be connected in a state of being electrically connected to each other. Therefore, it is possible to provide LED lamps 1 having various light outputs by connecting a plurality of one type of LED lamps 1. For example, in accordance with an existing straight tube fluorescent lamp, an LED lamp 1 having a length of 1 foot or 2 feet is basically used, and a plurality of LED lamps 1 are connected to form an LED having a desired length (that is, brightness). The lamp 1 can be realized. Moreover, the cost for inventory management can be reduced by reducing the types of the LED lamps 1, and the cost can be reduced by increasing the number of LED lamps 1 having a basic length (light output).

  Moreover, in this embodiment, in each LED lamp 1, the base pin 11 provided in the one base 7 and the insertion opening 12 provided in the other base 7 overlap each other in the connecting direction of the LED lamp 1. Is provided. Therefore, the plurality of LED lamps 1 can be connected with the circuit boards 5 accommodated in the storage container 2 in the same direction. In addition, when the light emitting diode 6 is mounted only on one surface of the circuit board 5, light is irradiated only in a predetermined direction from the light emitting diode 6, but the plurality of LED lamps 1 have the same direction of the circuit board 5. Thus, the light from the light emitting diode 6 can be distributed in a desired direction.

  When connecting a plurality of LED lamps 1, the base 7, which is a connection part, does not emit light. Therefore, if the length of the base 7 is large, the base part becomes dark and the connection part is conspicuous. Is preferably as short as possible.

  Moreover, the number and arrangement | positioning of the nozzle | cap | die pin 11 and the insertion port 12 are not limited to said form, It can change suitably.

(Embodiment 3)
A third embodiment will be described with reference to FIG. In addition, the same code | symbol is attached | subjected to the same component as Embodiment 1 or 2, the description is abbreviate | omitted, and only the characteristic part of this embodiment is demonstrated.

  In the first and second embodiments described above, the base pin 11 and the insertion port 12 are provided in the bases 7 on both sides, whereas in the present embodiment, one base 7a out of the bases 7a and 7b on both sides is provided. Is provided with a base pin 11, and the other base 7 b is provided with an insertion port 12. Inside the storage container 2, a contact 8 that electrically contacts the base pin 11 inserted through the insertion port 12 is stored at a position facing the insertion port 12 provided in the base 7b. The base pin 11 and the contact 8 are electrically connected to the circuit board 5 via lead wires (not shown), and a plurality of light emitting diodes 6 are connected in series between the base pin 11 and the contact 8. Will be connected.

  Further, in the present embodiment, in order to make the connecting portion where the plurality of LED lamps 1 are connected inconspicuous, the translucent portion 3 of one LED lamp 1 is projected to the other LED lamp 1 side at the connecting portion. The LED lamp 1 is arranged so as to overlap the other. That is, on the base 7a side, the heat radiating portion 4 protrudes outward in the axial direction from the light transmitting portion 3, thereby providing a concave portion 13 in which the light transmitting portion 3 of another LED lamp 1 is disposed. . In addition, on the base 7b side, the translucent part 3 is protruded outward in the axial direction from the heat radiating part 4, thereby providing a concave part 14 in which the heat radiating part 4 of another LED lamp 1 is disposed.

When connecting such an LED lamp 1, as shown in FIG.6 (c), the nozzle | cap | die 7a of one LED lamp 1 and the nozzle | cap | die 7b of the other LED lamp 1 face each other, and it was provided in the nozzle | cap | die 7a. The base pin 11 is inserted into the insertion port 12 provided in the base 7b. At this time, since the base pin 11 of the other LED lamp 1 inserted through the insertion opening 12 is electrically connected to the contact 8 arranged inside the storage container 2, the two LED lamps 1 and 1 are connected to each other. The accommodated circuit boards 5 and 5 are connected in series. The lighting fixture 20 using the LED lamp 1 is provided with sockets 22a and 22b to which the caps 7a and 7b are respectively attached, and the two connected LED lamps 1 and 1 are attached to the lighting fixture 20. Can be used. Note that the number of LED lamps 1 to be connected is not limited to two, and a plurality of LED lamps 1 may be connected and used so as to obtain a desired brightness. Then, since only one base pin 11 is provided in one base 7a and only the insertion port 12 is provided in the other base 7b, the bases 7a and 7b cannot be connected to each other. It is to be connected with. When the base pins 11 of the other LED lamps 1 are inserted into the insertion openings 12 provided in the base 7b, the circuit boards 5 of the plurality of LED lamps 1 are connected in series. Are coupled in a state of being electrically connected to each other. Therefore, it is possible to provide LED lamps having various light outputs by connecting a plurality of one kind of LED lamps 1. In addition, the cost of inventory management can be reduced by reducing the types of the LED lamps 1, and the cost can be reduced by increasing the number of LED lamps 1 having a basic length (light output).

  Further, in the present embodiment, in a state where a plurality of LED lamps 1 are connected, the translucent portions 3 are in contact with each other, so that the connected portion is not conspicuous and the base 7 that does not emit light is not conspicuous when viewed from the lower side (illumination space side) can do. On the base 7b side, the translucent part 3 protrudes outward from the heat radiating part 4, and the light emitting diode 6 is also disposed in this projecting part, so that the projecting part does not become dark.

  In addition, in each said embodiment, the shape and quantity of the storage container 2, the cap pin 11, the insertion port 12, and the contact 8 are an example, and are not limited to said form.

DESCRIPTION OF SYMBOLS 1 LED lamp 2 Storage container 3 Translucent part 4 Thermal radiation part 5 Circuit board 6 Light emitting diode 7 Base 8 Contact 11 Base pin 12 Insertion slot

Claims (4)

A circuit board on which a light emitting diode is mounted as a light source;
A tubular storage container in which the circuit board is stored inside, and a translucent part that transmits the irradiation light from the light emitting diode to the outside is provided at least in part,
A base provided on both sides of the storage container;
A cap pin provided on each of the caps;
An insertion port provided in each of the caps, into which a cap pin included in another LED lamp is inserted,
A contact that is provided in each of the caps and is electrically connected to the cap pins and electrically contacts the cap pins of the other LED lamps that are inserted into the insertion port;
The LED lamp, wherein the light emitting diode is electrically connected between the cap pins of the caps on both sides. The base is rotatably attached to the storage container,
The base is provided with the two base pins symmetrically with respect to the rotation center, the two insertion openings are provided symmetrically with respect to the rotational center, and the two The LED lamp according to claim 1, wherein the base pin and the two insertion holes are provided on the same circumference centered on the rotation center.   2. The LED according to claim 1, wherein the base pin provided in one of the bases and the insertion port provided in the other base are provided at positions where they overlap each other in the connection direction of the LED lamp. lamp. A circuit board on which a light emitting diode is mounted as a light source;
A tubular storage container in which the circuit board is stored inside, and a translucent part that transmits the irradiation light from the light emitting diode to the outside is provided at least in part,
A base provided on both sides of the storage container;
A cap pin provided on one of the caps;
An insertion port provided in the other base and into which a base pin provided in another LED lamp is inserted;
A contact provided in the other base and electrically contacting the base pin of the other LED lamp inserted into the insertion opening;
The LED lamp, wherein the light emitting diode is electrically connected between the cap pin and the contact.

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