JP2678041B2 - Bulb base fluorescent lamp - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric lamp cap type fluorescent lamp.

2. Description of the Related Art Conventionally, as shown in FIG. 6, this type of light bulb type fluorescent lamp has a structure in which both legs are inserted into a tubular portion 9 of a holder 4 in an envelope composed of a globe 1 and a case 2. It has a structure in which a non-linear arc tube 5 such as a supported double U shape, a ballast 6 provided inside the holder 4, a glow starter 20, a noise preventing capacitor 21 and the like are housed (for example, Japanese Patent Laid-Open Publication No. 2000-242242). Akira
62-237602, etc.). A base 3 is provided on the case 2 in a protruding manner.

Problems to be Solved by the Invention As described above, the glow starter 20 is installed inside the holder 4 at a position close to the ballast 6 and the arc tube 5 because of the shape of the parts and the ease of wiring. .

By the way, in order to perform the instantaneous lighting, in the case of using an electronic starter including a control element such as a semiconductor element in place of the glow starter 20, the control element such as a semiconductor element to be used exceeds the operating limit temperature. Under the usage environment, it may cause damage or malfunction. Generally, since the bulb-type fluorescent lamp is small and the heat sources of the arc tube and the ballast are housed in the envelope, when used at a high wattage, the inside becomes considerably hot during lighting. In particular, when the electronic starter is provided at the position where the conventional glow starter 20 is housed, the electronic starter is affected by the heat of both the ballast 6 and the arc tube 5, and the above-mentioned problem is likely to occur.

The present invention has been made to solve the above problems, and provides a fluorescent lamp with a cap with a light bulb that can be instantly lit, has improved reliability, and is highly safe.

Means for Solving the Problems The light bulb cap fluorescent lamp of the present invention has a holder in which a non-linear arc tube is held on the outside and a ballast is provided on the inside in an envelope in which a cap portion is provided in a protruding manner. Then, the edges of the printed circuit board of the electronic starter, in which the electronic components including the semiconductor element are provided on the printed circuit board, are fitted into the recesses provided on the inner sides of both legs on one end side of the H-shaped holder. Then, by holding the printed board by the holder, the electronic component is provided in the mouthpiece so that the printed board closes the opening of the mouthpiece. The bobbin of the ballast is clamped between the parts.

Action The heat of the arc tube and the ballast is blocked by the printed circuit board, and the electronic parts are affected by these heat because the parts are provided in the base part away from the arc tube and the ballast. Is less. Further, the electronic starter is securely held at a predetermined position in the mouthpiece by the H-shaped holder.

Embodiment Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

As shown in FIG. 1, the bulb-type fluorescent lamp of the embodiment of the present invention comprises a globe 1 made of a light diffusing material such as glass or plastic, and plastic or the like fixed to this opening with an adhesive or the like. An envelope with a screw-in base 3 composed of an opaque cup-shaped cover 2, a holder 4 fixed in the envelope, and a non-linear type such as a double U type held outside the holder. It comprises an arc tube 5, a ballast 6 provided inside the holder 4, a holder 7, an electronic starter 8, a temperature fuse 12 and the like. The arc tube 5 has electrodes (not shown) at both ends, mercury and a rare gas are sealed inside, and a phosphor coating (not shown) is formed on the inner surface. Both legs are inserted into the portion 9 and fixed with silicone resin (not shown).

Next, the fixing structure of the holder 4, the stabilizer 6, the holder 7, the electronic starter 8 and the like will be described with reference to FIGS. 1 to 4.

As shown in FIG. 1, a ballast 6 is housed inside the holder 4. A printed circuit board 11 of the electronic starter 8 is attached to one end of the H-shaped holder 7, and the other end of the holder 7 is fixed to the bobbin 10 of the ballast. On this printed circuit board, one end of a temperature fuse 12 is attached together with electronic components such as a semiconductor element, a resistor and a capacitor that constitute the electronic starter 8, and the other end is provided with a base 3
It is connected to the. In such an electronic starter 8, the printed wiring board 11 blocks the opening of the base 13 so that the base 13 is closed.
It is provided in.

As shown in FIG. 2, a substantially disk-shaped printed circuit board 11 is provided with U-shaped notches 14 facing each other, and is provided inside both legs 15 on one end side of one holding tool 7. Is the recess 16
Are provided facing each other. Then, as shown by the arrow in FIG. 3, both legs 15 on the other end side of the holder 7 are soaked inwardly to widen the gap between the two legs 15 on one end, and then the two legs 15 on the other end side. The printed circuit board 11, that is, the electronic starter 8 is attached to the holder 7 by releasing the tightening of 15 inside and fitting the notch 14 of the printed circuit board 11 into the recess 16 of the holder 7. (See FIG. 4).

Both legs 15 of the holder 7 to which the printed circuit board 11 is attached
Are attached to the ballast 6 with the bobbin 10 interposed therebetween.

The collar 18 provided on the leg connecting portion 17 of the holder 7 is for ensuring insulation between the electrical connection portion of the printed board 11 and the terminal 19 of the ballast 6.

FIG. 5 shows an electrical connection diagram of the fluorescent lamp with the bulb cap.

As described above, in the embodiment of the present invention, the electronic starter 8 is housed in the base portion 13 where the temperature rise is smallest. Moreover, since the printed board 11 of the electronic starter 8 is held by the H-shaped holder 7 in the mouthpiece portion so as to close the opening of the mouthpiece portion 13, there is no need to provide a separate member for heat insulation. The heat of the ballast 6 and the arc tube 5 is blocked from being transmitted to the electronic components such as the semiconductor element, the resistor, and the capacitor, and the electronic starter 8 can be reliably held at a predetermined position. For this reason, it is possible to avoid exceeding the operating limit temperature of the electronic component, and since the insulation distance between the electronic component and the terminal of the ballast 6 becomes constant, it is possible to ensure the stability of the quality. Further, the structure of the holder 7 is simple and inexpensive, and the workability of assembling is good. In the unlikely event that the interior of the envelope reached a heating state due to an abnormality in the ballast 6 or an abnormality caused by the continuous preheating operation of the electronic starter 8, the fusing temperature was made to match the critical phase temperature of the electronic component. Temperature fuse 12
It is also possible to ensure the safety of the fluorescent lamp with the light bulb cap by melting.

EFFECTS OF THE INVENTION As described above, according to the present invention, the electronic starter can be used under the best thermal conditions, and it is possible to improve the reliability as well as the instantaneous lighting. In addition, it is possible to provide a fluorescent lamp with a cap with a light bulb, which can be assembled with good workability at low cost.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view of a fluorescent lamp with a light bulb base according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of the relevant parts, and FIG. 3 shows a state in which a printed circuit board is mounted on a holder. Fig. 4 and Fig. 4 are views showing a state in which the printed circuit board is mounted on the ballast, Fig. 5 is an electrical connection diagram of the bulb-type fluorescent lamp of the same bulb, and Fig. 6 is a part of the bulb-type fluorescent lamp of the conventional example. It is a notch front view. 1 ... Globe, 2 ... Cover, 3 ... Base, 4 ... Holder, 5 ... Arc tube, 6 ... Ballast, 7 ... Holder, 8
...... Electronic starter, 9,10 …… Ballast bobbin, 11 ……
Printed circuit board, 12 …… Temperature fuse, 13 …… Base part, 14
...... Printed circuit board notch, 15 ...... Holder leg, 16 ...
… Recessed part of the holder.

Claims (1)

(57) [Claims] 1. A leg having one end side of an H-shaped holder, wherein a holder having a non-linear arc tube on the outside and a ballast provided on the inside is fixed in an envelope having a projecting base. The printed circuit board is held by the holder by fitting the edges of the printed circuit board of the electronic starter in which the electronic component including the semiconductor element is provided on the printed circuit board into the recesses provided opposite to each other inside the section. By holding the printed board, the electronic component is provided in the base so that the opening of the base is closed, and the bobbin of the ballast is clamped by both legs of the other end of the holder. Characteristic light bulb cap fluorescent lamp.