CN102062309A - LED illumination apparatus - Google Patents

Abstract

The invention relates to an LED lighting device. In the conventional LED lighting devices using LEDs mounted on the sockets of fluorescent lamps, there is a problem that parts cannot be easily replaced, or even if they can be easily replaced, the workability and reliability are poor, and redundant parts are required. parts. According to the present invention, the printed circuit board built in the main body is assembled by connecting the pin terminal connecting portion of the connecting terminal connected to the printed circuit board to both of the pair of pin terminals fitted in the socket of the fluorescent lamp fixture.

Description

LED lighting

technical field

The present invention relates to an LED lighting device using LED (Light Emitting Diode) mounted on a socket of a fluorescent lamp fixture.

Background technique

LED lighting devices using energy-saving, high-brightness, and long-life white LEDs are being developed as lighting devices to replace conventional fluorescent lamps and the like.

Patent Document 1: Japanese Patent Laid-Open No. 2001-351402

Patent Document 2: Japanese Patent No. 4156657

Patent Document 3: Japanese Utility Model Registration No. 3148176

Patent Document 1 proposes an LED lighting device that can be easily mounted on an existing fluorescent lamp fixture.

Patent Document 2 proposes an LED lighting device capable of improving the efficiency of assembly work.

Fig. 11 is a diagram showing the internal structure of a conventional LED lighting device.

It is composed of: a main body 1; a cover body 3 that holds a pair of pin terminals (pin terminals) 2 that can be mounted on an existing fluorescent lamp fixture and is joined to the main body 1; a printed circuit board 4 that is built in the main body 1 , equipped with an electrical control circuit; a plurality of LED5, mounted on the printed circuit board 4; and wires 7, one end connected to the printed circuit board 4, the other end directly connected to the pin terminal 2, the pin terminal 2 and the wire 7 are riveted or Soldered connections.

However, the connection by caulking or soldering is not only poor in workability, but also difficult to remove the electric wire after connection, and it is a structure that cannot easily replace parts.

Patent Document 3 proposes an LED lighting device capable of exchanging the LED lighting part and/or the LED itself, but the contact structure has a problem of momentary disconnection or poor contact, which poses a problem as a lighting device.

However, as shown in FIG. 12 , in the wiring of a fluorescent lamp, only one of the pair of electrodes of the socket 8 may be connected to the power supply. Therefore, both pin terminals 2 need to be connected to the printed circuit board 4 in advance.

As a countermeasure against this, as shown in FIG. 11 , both pin terminals 2 and the printed circuit board 4 are connected with two electric wires.

As another corresponding method, as shown in FIG. 13 , a round terminal 9 a is connected to one end of the electric wire 7 drawn out from the printed circuit board 4 , and then connected to the pin terminal 2 with a screw. In addition, the circular terminals 9b other than the circular terminal 9a are mutually short-circuited by the jumper wire 10, and are connected with the other pin terminal 2 by a screw.

Problems to be solved by the present invention

As described above, the conventional method has a problem that components cannot be easily replaced, or even if the components can be easily replaced, workability and reliability are poor, and redundant components are required.

Contents of the invention

solutions to problems

The LED lighting device of the first invention is characterized by comprising: a main body 1; a cover body 3 that holds a pair of pin terminals 2 fitted in a socket 8 of a fluorescent lamp fixture and is joined to the main body 1; a printed circuit board 4 , built into the main body 1, equipped with an electrical control circuit; LED5, mounted on the printed circuit board 4; connecting terminal 6, used to connect to the pin terminal 2; and wire 7, one end connected to the printed circuit board 4, the other end connected to the The connecting terminal 6 is a metal plate integrally formed with a wire connecting portion 6 a and a pin terminal connecting portion 6 b, and the pin terminal connecting portion 6 b is connected to both sides of a pair of pin terminals 2 .

The LED lighting device of the second invention is characterized in that, in the first invention, the locking portion 3 a is formed on the cover 3 , and the locking portion 6 c that engages with the locking portion 3 a is formed on the connection terminal 6 .

The LED lighting device of the third invention is characterized in that, in the first invention, the pin terminal 2 is formed with the groove 2a, and the connection terminal 6 is formed with the locking portion 6d that engages with the groove 2a.

The effect of the invention

According to the first invention, not only components such as the LED lighting unit and/or the LED itself can be easily exchanged, but also the pin terminal and the printed circuit board can be easily connected using only one wire and connection terminal.

According to the second invention, the connection terminal can be held on the cover with a simple structure without using other components.

According to the third invention, since there is no need to provide the locking portion 3 a on the lid body 3 , there is an advantage that the structure of the mold for molding the lid body 3 becomes simple.

Description of drawings

Fig. 1 is an exploded view of the LED lighting device of the present invention (Embodiment 1).

Fig. 2 is a cross-sectional view of the LED lighting device of the present invention (Embodiment 1).

FIG. 3 is a cross-sectional view of the cover body 3 of the first embodiment.

FIG. 4 is an internal perspective view of the cover body 3 of the first embodiment.

FIG. 5 is a perspective view of the connection terminal 6 of the first embodiment.

FIG. 6 is an inserted state diagram of the cover body 3 and the connection terminal 6 of the first embodiment.

7 is a cross-sectional view of the inserted state of the cover body 3 and the connection terminal 6 of the first embodiment.

FIG. 8 is a perspective view of the cover body 3 and the connection terminal 6 of the second embodiment.

FIG. 9 is a perspective view of the cover body 3 and the connection terminal 6 of the third embodiment.

FIG. 10 is an enlarged view of the locking portion 6d of the third embodiment.

Fig. 11 is an exploded cross-sectional view of a conventional LED lighting device.

Fig. 12 is a wiring diagram of a fluorescent lamp fixture.

Fig. 13 is a wiring diagram of a conventional LED lighting device.

Explanation of reference signs

1 subject

2 pin terminals

3 cover body

4 printed circuit boards

5 LEDs

6 connection terminals

7 wires

Detailed ways

As shown in Figures 1 and 2, the LED lighting device of the present invention includes: a main body 1; a cover body 3, which holds a pair of pin-shaped terminals 2 fitted in the socket 8 of a fluorescent lamp appliance, and is joined to the main body 1; The circuit board 4 is built in the main body 1 and is equipped with an electrical control circuit; the LED 5 is installed on the printed circuit board 4; the connecting terminal 6 is used to connect to the pin terminal 2; and the wire 7 is connected to the printed circuit board 4 at one end and the other One end is connected to the connection terminal 6 .

[Example 1]

The main body 1 is realized by combining a light diffusion part 1a made of a transparent or translucent resin (such as polycarbonate resin) and a heat dissipation part 1b made of an aluminum alloy. 1b is the case of a concavo-convex shape heat sink.

In addition, the main body 1 does not necessarily have to be this combination, and can also realize it only with resin.

The cover body 3 with the copper alloy pin terminal 2 attached to the size compatible with the existing fluorescent lamp fixture is joined to both ends of the main body 1, but is detachable from the main body 1 for internal maintenance.

FIG. 3 shows a cover 3 in which a pair of pin terminals 2 are integrally molded with an insulating resin, but the pin terminals 2 may be attached to the cover 3 by press-fitting or caulking.

Furthermore, as shown in FIG. 4 , a receiving groove 3 b into which the connecting terminal 6 is assembled and a locking portion 3 a engaged with the locking portion 6 c of the connecting terminal 6 are formed inside the cover body 3 .

In addition, the material of the cover body 3 is not limited to insulating resin, and metal may be used, but in order to avoid electric shock, the pin terminal 2 and the cover body 3 are electrically insulated.

An electric control circuit (not shown) for rectification, voltage control, etc. and a plurality of LEDs 5 are mounted on the printed circuit board 4 , and electric wires 7 with connection terminals 6 are led out from the end of the printed circuit board 4 .

The printed circuit board 4 is embedded and held in the main body 1 .

In addition, although a surface mount type white LED was used for LED5, a cannonball type LED may also be used. In addition, the number of LED5 is determined according to the specification of lighting.

The connecting terminal 6 is produced by pressing a copper alloy, and as shown in FIG. 5 , is composed of a crimping portion 6a, a pin terminal connecting portion 6b, and a locking portion 6c.

The electric wire 7 is connected to the crimping part 6a.

The pin terminal connection part 6b is provided in two places, and a pair of pin terminal 2 can be inserted and connected.

As shown in FIGS. 6 and 7 , the locking portion 6 c is formed in a U-shaped cross section, and one end thereof is bent to engage with the locking portion 3 a provided on the cover 3 to hold the connection terminal 6 .

Furthermore, since the locking portion 6c is elastic, when the connection terminal 6 is detached from the cover body 3, it is only necessary to touch and lock it with a simple tool.

In addition, by assembling the connection terminal 6 to the receiving groove 3 b of the cover body 3 , shaking due to the electric wire 7 can be prevented.

[Example 2]

FIG. 8 shows the cover body 3 and connection terminals 6 of the second embodiment.

The difference between the locking portion 6c in FIG. 2 and the first embodiment is that it is tongue-shaped, and the other structures are the same as the first embodiment.

When the locking portion 6 c is bent, it engages with the locking portion 3 a provided on the cover body 3 to hold the connection terminal 6 .

Since the locking portion 6 c is elastic, when the connection terminal 6 is detached from the cover body 3 , it is only necessary to touch and lock it with a simple tool.

[Example 3]

FIG. 9 shows the cover body 3 and connection terminals 6 of the third embodiment. In addition, the structure different from Example 1 is demonstrated here.

The pin terminal 2 of Embodiment 3 is provided with a groove 2a.

A lock portion 6 d is formed on the connection terminal 6 . The locking portion 6d is provided at a position near the pin terminal connection portion 6b so as to engage with the groove 2a, and engages with the groove 2a by the elastic force of the locking portion 6d to hold the connection terminal 6. As shown in Fig. 10, by providing a protrusion 6d' on the locking portion 6d, it can be reliably engaged with the groove 2a.

Furthermore, since the locking portion 6c is elastic, when the connecting terminal 6 is removed from the cover, it is only necessary to touch and lock it with a simple tool.

According to the structure of Example 3, there is an advantage that the structure of the mold for molding the cover 3 is simplified because there is no need to provide the locking portion 3a on the cover 3 as in Example 1.

Industrial Utilization Possibility

The present invention can be utilized in LED lighting devices using LEDs (Light Emitting Diodes) mounted in sockets of fluorescent lamp fixtures.

Claims (3)

1. An LED lighting device, characterized in that it comprises: subject(1); The cover (3) holds a pair of pin terminals (2) fitted in the socket (8) of the fluorescent lamp fixture, and is joined to the main body (1); A printed circuit board (4), built into the main body (1), is equipped with an electrical control circuit; LED (5), mounted on a printed circuit board (4); connecting terminal (6) for connecting to pin terminal (2); and An electric wire (7), one end is connected to the printed circuit board (4), and the other end is connected to the connection terminal (6), The connection terminal (6) integrally forms a wire connection part (6a) and a pin terminal connection part (6b) with a metal plate, and the pin terminal connection part (6b) is connected to both sides of a pair of pin terminals (2). 2. The LED lighting device according to claim 1, characterized in that, the cover body (3) is formed with a locking part (3a), and the connecting terminal (6) is formed with a locking part (3a). Locking part (6c). 3. The LED lighting device according to claim 1, characterized in that, a groove (2a) is formed on the needle terminal (2), and a locking part ( 6d).

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