JPH0785708A - Fluorescent lamp system - Google Patents

Abstract

PURPOSE:To save a space for accommodating an electronic lighting circuit component and to prevent the thermal degradation of the electronic lighting circuit component by accommodating at least a part of a circuit base board of the electronic lighting circuit part in a specified space, and by arranging it on an opposite side to an electrode. CONSTITUTION:An electronic lighting circuit component accomodation recess 8 which is inserted into a space 18 formed between both end straight portions 11b, 11b and a central bending portion 11a is formed in a partition board 5. An electronic lighting circuit component 20 is accommodated from the side of a cover 1 in the accommodation recess 8. The component 20 is mounted on one side of a circuit board 21. When the circuit board 21 is accommodated in the accommodation recess 8, the other side of the circuit board 21, or the back side, is faced to the both end straight portions 11b, 11b, in which an electrode 12 of a saddle-shaped fluorescent lamp 10 is sealed, and the component 20 which is concentratedly mounted on one side of the circuit board 21 is faced to the central bending portion 11a. The electronic lighting circuit component 20 is separated from the electrode 12 through the circuit board 21.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluorescent lamp device in which a bent fluorescent lamp is attached to the other end of a cover having a base at one end, and an electronic lighting circuit component is attached to the cover.

[0002]

2. Description of the Related Art In recent years, a choke coil type ballast is housed in a cover having a screw type base for an incandescent light bulb at one end, and a U-shaped, W-shaped, saddle-shaped or other bent type is provided at the other end of the cover. Fluorescent lamp devices fitted with fluorescent lamps are commercially available. This type of fluorescent lamp device is compatible with incandescent lamps because it contains a ballast in the cover, and can be used as an energy-saving light source if used in place of incandescent lamps. It is called a light lamp.

By the way, in the above-mentioned conventional fluorescent lamp device, the ballast generates heat during lighting, and this heat raises the temperature in the cover and is also transmitted to the lamp, which causes the temperature of the bulb to rise excessively. .

For this reason, in this type of fluorescent lamp device, electronic lighting circuit parts have come to be used in place of the choke coil type ballast. The electronic lighting circuit parts generate little heat from themselves, and therefore, there is no fear of heat being transferred from the electronic lighting circuit parts to the lamp.

[0005]

However, in the fluorescent lamp device using the electronic lighting circuit component, conversely, the electronic lighting circuit component may be heated by the heat emitted from the lamp, causing thermal deterioration. In order to prevent such heat deterioration of the electronic lighting circuit components, if the circuit components are stored in the cover at a distance from the lamp, the cover becomes large.

The present invention has been made in view of the above circumstances, and an object thereof is to eliminate the need for enlarging the space for accommodating the electronic lighting circuit parts and to cause the thermal deterioration of the electronic lighting circuit parts. It is intended to provide a fluorescent lamp device capable of preventing the above.

[0007]

According to a first aspect of the present invention, a bent fluorescent lamp is attached to the other end of a cover having a base at one end, and a space surrounded by a bent bulb of this lamp is provided. At least a part of the circuit board on which the electronic lighting circuit component is mounted is accommodated, the circuit board is opposed to the electrode side of the lamp in this space, and the electronic lighting circuit component mounted on the circuit board is mounted on the circuit board. Is arranged on the opposite side of the electrode. The invention according to claim 2 is characterized in that, among the electronic lighting circuit components, components particularly susceptible to heat are arranged outside the space surrounded by the bulb. The invention of claim 3 is characterized in that, when an electrolytic capacitor is used as one of the electronic lighting circuit components, a part of the electrolytic capacitor is housed in the base. According to the invention of claim 4, the lamp has a saddle shape,
Further, when an electrolytic capacitor is used as one of the electronic lighting circuit components, a part of the electrolytic capacitor is arranged in the vicinity of the middle bent portion of the saddle type valve. According to a fifth aspect of the present invention, the other end opening of the cover is closed by a lamp supporting plate, a lamp is attached to the lamp supporting plate, and the lamp supporting plate divides the lamp from the circuit board. It is characterized by having done.

[0008]

According to the invention of claim 1, since at least a part of the circuit board on which the electronic lighting circuit component is mounted is housed in the space surrounded by the bent bulb of the bent fluorescent lamp, the bulb is provided. It is possible to effectively use the space surrounded by, and it is not necessary to provide a special space or a large space for accommodating the circuit board in another place, and the cover can be downsized. Moreover, the circuit board faces the electrode side of the lamp in the space, and the electronic lighting circuit component mounted on the circuit board is arranged on the opposite side of the electrode from the circuit board. The generated heat is blocked by the circuit board, and the electronic lighting circuit component is prevented from being heated. Therefore, the electronic lighting circuit components are thermally partitioned, and thermal damage is prevented.

According to the second aspect of the present invention, the electronic lighting circuit component, which is particularly vulnerable to heat, is arranged outside the space surrounded by the bulb, so that the influence of heat from the electrodes can be further avoided.

According to the invention of claim 3 or 4,
Since the electrolytic capacitor is weak against heat and occupies a large volume, if a part of this electrolytic capacitor is housed in the mouthpiece or placed near the middle bent part of the saddle-shaped valve, it will be less susceptible to heat and dead space. Can be effectively used as a storage space.

According to a fifth aspect of the present invention, the other end opening of the cover is closed by a partition board, a lamp is attached to the partition board, and the partition board separates the lamp from the circuit board. Therefore, the wall of the partition board exerts a further heat shielding effect, and the circuit board is hidden by the cover side, so that the circuit board cannot be seen from the outside and the appearance is improved.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the first embodiment shown in FIGS. In the figure, reference numeral 1 is a cover made of synthetic resin, and a screw-type base 2 such as E26 type is attached to one end of the cover 1. In addition, you may form the ventilation hole for heat dissipation in the cover-1.

A globe 3 is attached to the other end of the cover 1. The globe 3 is made of translucent glass or resin and covers the fluorescent lamp 20 housed inside. The opening of the glove 3 is the above-mentioned cover.
The cover 1 and the globe 3 are joined to each other with an adhesive 4. The cover 1 and the globe 3 may be connected to each other by mechanical engagement using caulking or locking claws instead of using an adhesive, and these plural means may be used together.

The cover 1 and the globe 3 are partitioned by a partition board 5 which also serves as a lamp support plate. Partition board 5
Is made of a synthetic resin in a shallow dish shape, and a flange portion 6 formed on the peripheral portion is sandwiched between the cover 1 and the globe 3 and fixed to the cover 1.

The partition board 5 is provided with lamp mounting holes 7 and 7, and an electronic lighting circuit component accommodating recess 8 is formed beside this. The ends of the bent fluorescent lamp 10 are fixed to the lamp mounting holes 7, 7.
The bent fluorescent lamp 10 may be a lamp in which two U-shaped bulbs or two H-shaped bulbs are arranged in parallel, but a saddle-shaped fluorescent lamp is used in this embodiment. The saddle-type fluorescent lamp 10 has a saddle shape in which a straight tube type bulb is bent and formed in a U-shape at an intermediate portion thereof, and further, the intermediate bent portion 11a and the straight portions 11b at both ends are bent and formed so as to face each other. A fluorescent lamp having a bulb-shaped bulb 11 and forming a saddle-shaped discharge path as a whole. This fluorescent lamp 1
In No. 0, electrodes 12 (only one of which is shown) each made of a filament coil are sealed at both ends 11b of the bulb 11. Then, thin tubes 13 and 13 are connected to the ends of the valve 11, respectively.
13 communicates with the discharge space of the bulb 11. And
One thin tube 13 houses an amalgam 14. A phosphor coating (not shown) is applied to the inner surface of the bulb 11, and the bulb 11 is filled with a rare gas such as argon.

In such a bent type fluorescent lamp 10, the lamp mounting hole 7 is formed in the partition board 5 in which the linear portions 11b at both ends enclosing the electrodes 12 and 11b also function as the lamp supporting plate.
7, the linear portions 11b, 11b at both ends and the intermediate bent portion 11a are bonded to the partitioning board 5 with an adhesive 15. Therefore, the lamp 10 is mechanically supported by the partition board 5, and the outer periphery of the lamp 10 is covered with the globe 3. In this case, the thin tube 13 accommodating the amalgam 14 is inserted through the lamp mounting holes 7, 7 to cover the cover 1.
It projects inside.

By the way, in the above-mentioned saddle-shaped fluorescent lamp 10, since the bulb 11 has a saddle shape, the linear portions 11b and 11b at both ends enclosing the electrode 12 and the intermediate bent portion 11a are formed. They face each other, however, they are separated from one another. Therefore, the straight portions 1
A space 18 is formed between 1b and 11b and the intermediate bent portion 11a.

The partition board 5 is provided with straight line portions 11 at both ends.
An electronic lighting circuit component accommodating concave portion 8 is formed which is inserted into the space 18 formed between b and 11b and the intermediate bent portion 11a. Then, in the accommodation recess 8, the cover 1
The electronic lighting circuit component 20 is accommodated from the side.

The electronic lighting circuit component 20 is mounted on one side surface of the circuit board 21, and the electronic lighting circuit component 20 includes, for example, a field effect transistor 22, a temperature fuse 23 for protecting the transistor 22, and an electrolytic capacitor 24. A full-wave protection temperature fuse 25, a full-wave rectifier (not shown), a choke coil transformer, a positive temperature coefficient thermistor, a thyristor, a capacitor, a toroidal core winding coil, and the like.

The electronic lighting circuit components 20 are collectively mounted on one side surface of the circuit board 21 which supports them. The circuit board 21 is formed of, for example, a rectangular insulating plate, and at least a part of the circuit board 21 is fitted into the accommodation recess 8. In this case, the peripheral edge of the circuit board 21 is, as shown in FIG. 3, a fitting insertion groove 26 formed on the inner surface of the accommodation recess 8,
The mounting position is regulated by this, and it is fixed to the partition board 5 by using an adhesive as required.

When the circuit board 21 is housed in the housing recess 8, as shown in FIG. 1, the other side surface of the circuit board 21, that is, the back surface, is the electrode 12 of the saddle-shaped fluorescent lamp 10.
The electronic lighting circuit components 20, which are mounted on one side surface of the circuit board 21 in a concentrated manner, are mounted so as to face the intermediate bent portions 11a. That is, the electronic lighting circuit component 20 is separated from the electrodes 12, 12 via the circuit board 21.

Among the above electronic lighting circuit components 20,
The electrolytic capacitor 24 is weak against heat and is larger and taller than other parts. Therefore, at least the electrolytic capacitor 24 is arranged outside the housing recess 8. In the case of the present embodiment, the intermediate bent portion 11a of the saddle type fluorescent lamp 10 is used.
The height of the both ends of the electrode 12 is enclosed by the straight portions 11b, 11b.
Since it is lower than the height of the intermediate bent portion 11a, a dead space 29 is formed above the intermediate bent portion 11a in the figure. Therefore, the electrolytic capacitor 24 is connected to the upper end of the circuit board 21, and the tip portion of the electrolytic capacitor 24 is connected to the intermediate bent portion. It is accommodated in the dead space 29 above 11a.

According to the embodiment having such a structure, the temperature of the bulb 11 rises due to the heat generation of the electrode 12 during the lighting of the lamp. However, inside the cover 1 and inside the glove 3 is a partition board 5
The heat of the lamp 10 is covered by the
It is prevented from being transmitted inside. Therefore, the inside of the cover 1 is kept at a relatively low temperature, and the thin tube 1 containing the amalgam 14 is stored.
Since 3 is inserted into the cover 1 through the lamp mounting holes 7, 7, it is possible to prevent the temperature of the amalgam 14 from rising excessively.

An electronic lighting circuit component accommodating recess 8 formed in the partition board 5 accommodates an electronic lighting circuit component 20. The accommodating space 8 has both ends enclosing the electrodes 12 of the saddle type fluorescent lamp 10. Since it is stored in the space 18 formed between the straight portions 11b and 11b and the intermediate bent portion 11a, the dead space of the saddle-shaped fluorescent lamp 10 can be effectively utilized.

Moreover, since the housing recess 8 is a space that is thermally isolated from the inside of the globe 3, the temperature rise of the electronic lighting circuit component 20 is prevented. In this case, in particular, the back surface of the circuit board 21 faces the straight line portions 11b and 11b at both ends encapsulating the electrodes 12 of the fluorescent lamp 10,
Since the electronic lighting circuit components 20 concentratedly mounted on one side surface are attached so as to face the intermediate bent portion 11a side, the electronic lighting circuit components 20 are emitted from the bulb end portion near the electrode 12 which becomes high temperature during lighting. The heat is shielded by the wall of the partition board 5 and the circuit board 21, so that the heat of the electrode 12 is reduced from being transmitted to the electronic lighting circuit component 20. Since each electronic lighting circuit component 20 faces the intermediate bent portion 11a of the lamp 10 having a relatively low temperature, the temperature rise of the electronic lighting circuit component 20 is prevented. Therefore, the electronic lighting circuit component 20 is prevented from being damaged by heat and the life is extended.

Since the electrolytic capacitor 24, which is particularly vulnerable to heat and has a large physique, is housed in the dead space 29 formed above the intermediate bent portion 11a of the lamp, the temperature of this portion does not rise so much, and literally it is a dead space. Therefore, the space can be effectively used. Therefore, the substantial volume of the cover 1 can be reduced, and the cover 1 can be downsized.

The present invention is not limited to the above-mentioned first embodiment. That is, in the case of the structure shown in FIG.
The electrolytic capacitor 24, which is weak against heat and has a large physique, is housed in the dead space 29 formed above the intermediate bent portion 11a of the lamp. The electrolytic capacitor 24 has the same structure as in the second embodiment shown in FIG. A part may be housed in the base 2. By doing so, the dead space in the base 2 can be effectively utilized, and the electrolytic capacitor 24 is further separated from the lamp 10, so that thermal deterioration of the electrolytic capacitor 24 is further prevented. can do.

Further, as in the third embodiment shown in FIG.
Heat-sensitive electronic lighting circuit components 20a including the electrolytic capacitor 24 are intensively mounted on another circuit board 30, and the circuit board 30 is disposed outside the space 18 and the housing recess 8 to prevent heat-sensitive electrons. The lighting circuit component 20a may be kept away from the lamp 10.

Further, the electronic lighting circuit component relatively resistant to heat is mounted on the back side of the circuit board 20 so as to face the electrode side of the lamp 10, and the electronic lighting circuit component weak to heat is connected to the circuit board 20.
Mounted on the front surface side of the circuit board 2 for the electrodes of the lamp 10.
It may be arranged on the opposite side of 0.

Since the lamp 10 is covered with the globe 3 in each of the above-mentioned embodiments, the electronic lighting circuit component 20 and the circuit board 21 are hidden by the globe 3, so that the partition 5 is provided with the housing recess 8. Instead of forming it, the electronic lighting circuit component 20 may be barely arranged in the space 18 formed between the bulbs 11 as shown in FIG. Even in this case, the electronic lighting circuit component 20 and the circuit board 21 cannot be seen from the outside, so that the appearance is not spoiled.

On the contrary, if the electronic lighting circuit component 20 is housed in the housing recess 8 formed in the partition board 5, the electronic lighting circuit component 20 and the circuit board 21 cannot be seen from the outside. Therefore, as shown in FIG. 7, the lamp 2 can be used without using gloves.
Even a fluorescent lamp device in which 0 is exposed can be implemented without damaging the appearance because the electronic lighting circuit component 20 and the circuit board 21 are not visible from the outside.

[0032]

As described above, according to the present invention, since at least a part of the circuit board on which the electronic lighting circuit component is mounted is housed in the space surrounded by the bulb of the bent fluorescent lamp, the bulb is used. The enclosed space can be effectively used, a special space for accommodating the circuit board or a large space is not required in other places, and the cover can be downsized. Moreover, the circuit board faces the electrode side of the lamp in the space, and the electronic lighting circuit component mounted on the circuit board is arranged on the side opposite to the electrode side with respect to the circuit board. The generated heat shields the circuit board and prevents the heat from being transferred to the electronic lighting circuit component. Therefore, the electronic lighting circuit component is thermally partitioned, and the electronic lighting circuit component having poor heat resistance is prevented from being thermally damaged.

[Brief description of drawings]

FIG. 1 is a sectional view of a fluorescent lamp device showing a first embodiment of the present invention.

FIG. 2 is an exploded perspective view of the embodiment.

FIG. 3 is an exploded perspective view of a circuit board and a partition board of the embodiment.

FIG. 4 is a sectional view of a fluorescent lamp device showing a second embodiment of the present invention.

FIG. 5 is a sectional view of a fluorescent lamp device showing a third embodiment of the present invention.

FIG. 6 is a sectional view of a fluorescent lamp device showing a fourth embodiment of the present invention.

FIG. 7 is a sectional view of a fluorescent lamp device showing a fifth embodiment of the present invention.

[Explanation of symbols]

1 ... Cover 2 ... Clasp
3 ... Globe 5 ... Partition board 8 ... Electronic lighting circuit component accommodating concave portion 10 ... Saddle-shaped fluorescent lamp 11 ... Bulb 11a ... Intermediate bent portion 11b ... Straight end 12 ... Electrode 20 ... Electronic lighting circuit component 21 ... Circuit board 24 ... Electrolytic capacitor

Claims (5)

[Claims] 1. A circuit board on which a bending fluorescent lamp is attached to the other end of a cover having a base at one end, and an electronic lighting circuit component is mounted in a space surrounded by a bent bulb of the lamp. A part of it is housed, the circuit board is opposed to the electrode side of the lamp in this space, and the electronic lighting circuit component mounted on the circuit board is arranged on the opposite side of the electrode from the circuit board. Fluorescent lamp device characterized by. 2. The fluorescent lamp device according to claim 1, wherein among the electronic lighting circuit components, a component particularly vulnerable to heat is arranged outside the space surrounded by the bulb. 3. The fluorescent lamp device according to claim 2, wherein, when an electrolytic capacitor is used as one of the electronic lighting circuit components, a part of the electrolytic capacitor is housed in a base. 4. When the lamp has a saddle shape and an electrolytic capacitor is used as one of the electronic lighting circuit parts, a part of the electrolytic capacitor is provided in the vicinity of an intermediate bent portion of the saddle type bulb. It has been arranged in the.
The fluorescent lamp device described in 1. 5. The other end opening of the cover is closed by a partitioning board, a lamp is attached to the partitioning board, and the partitioning board separates the lamp from the circuit board. The fluorescent lamp device according to any one of claims 1 to 4.