JPH087633A - Light bulb type fluorescent lamp device - Google Patents

Abstract

(57) [Summary] [Object] To provide a light bulb type fluorescent lamp device capable of increasing the size of a circuit board, increasing the number of circuit components to be mounted, and reducing the mounting density. [Structure] A partition board 4 is attached to the other end of a cover 1 having a base 3 at one end, and a high frequency lighting circuit component 61 is provided in the cover.
While mounting the circuit board 60 on which is mounted, the lamp mounting hole 44 is formed in this partition board, the end portion of the fluorescent lamp 7 is inserted into this lamp mounting hole, and the end portion of this fluorescent lamp is fixed to the partition board. In the above light bulb type fluorescent lamp device, the circuit board is provided with an edge portion 62 that partially covers the end surface 71 of the fluorescent lamp inserted into the lamp mounting hole. Since the edge of the circuit board is extended so as to cover the end surface of the lamp, the area of the circuit board can be increased, the number of circuit components can be increased, and the mounting density can be reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a cover provided with a base at one end and a partitioning plate at the other end. The lighting device is housed in the cover and a fluorescent lamp is attached to the partitioning plate. The present invention relates to a bulb-type fluorescent lamp device.

[0002]

2. Description of the Related Art Recently, as disclosed in Japanese Patent Application Laid-Open No. 63-218148, a partition plate is provided at the other end of a cover having a screw-type base for an incandescent lamp at one end, and a partition plate is provided in the cover. , A lighting device is housed, and a U-shaped, W-shaped, saddle-shaped, etc. bent fluorescent lamp is attached to the outside of the partitioning board, and a fluorescent lamp device having a structure in which the above lamp is covered with a globe has been developed. It is commercially available. This type of fluorescent lamp device is compatible with an incandescent light bulb because it contains a lighting device for maintaining the lighting of the fluorescent lamp in the cover, and as an energy-saving light source by using it instead of the incandescent light bulb. Can be used
Therefore, it is called a bulb-type fluorescent lamp device.

In this type of light bulb type fluorescent lamp device, a type using a high frequency electronic lighting circuit component is known as a lighting device since the lamp efficiency is improved by lighting the lamp at a high frequency. This type of high-frequency electronic lighting circuit component is mounted on a circuit board, and this circuit board is mounted inside a partition board as described in the above publication.

On the other hand, a lamp mounting cylinder is formed on the partition board, and the end of the fluorescent lamp having a bent discharge path is inserted into the lamp mounting hole of the lamp mounting cylinder and fixed with an adhesive or the like. It is like this. In this case, positioning projections are formed on the ends of the lamp mounting tube located inside the cover, and these positioning projections are such that the ends of the bent fluorescent lamp are mounted from below the partition board. When the lamp is inserted into the cylindrical portion, the end surface of the lamp comes into contact with the lamp to be positioned. In other words, the ends of the bulb may be uneven in height due to variations in processing. Therefore, by providing the above-mentioned positioning protrusions, the insertion depth of the lamp is restricted and the partition board The mounting position of the entire lamp with respect to is regulated.

[0005]

However, in the conventional case, a plurality of the positioning protrusions are provided for each lamp mounting cylinder. In this case, the plurality of positioning protrusions are provided separately in the circumferential direction of the lamp mounting cylinder portion.

For this reason, in the conventional circuit board mounted on the partition board, the concave edge portion is formed so as to avoid the plurality of positioning projections formed on the lamp mounting cylinder portion, and the end portion of the lamp is not formed. It was formed so as not to face each other. That is, the concave edge portion was largely cut out so as to avoid the positioning protrusions.

As a result, the circuit board becomes smaller, the effective mounting area becomes smaller, the number of mountable circuit parts is limited, and the number of parts cannot be increased. Further, the high-frequency electronic device mounted on the circuit board is mounted. Since the packaging density of the lighting circuit components becomes high, there is a concern that the components will come close to each other and will affect each other thermally.

The present invention has been made in view of the above circumstances, and an object thereof is to make a circuit board large, to increase the number of circuit components to be mounted and to reduce the mounting density. It is intended to provide a light bulb type fluorescent lamp device.

[0009]

According to a first aspect of the present invention, a partition board is attached to the other end of a cover having a base at one end, and a circuit board having a high-frequency lighting circuit component mounted therein is attached to the cover of the partition board. At the same time, a lamp mounting hole is formed in this partition board, the end of the fluorescent lamp is inserted into this lamp mounting hole, and the end portion of this fluorescent lamp is fixed to the partition board. The substrate is provided with an edge part that partially covers the end surface of the fluorescent lamp inserted into the lamp mounting hole.

According to a second aspect of the present invention, in the partition board, the end surface of the fluorescent lamp located at the end of the lamp mounting hole on the inner side of the cover is positioned opposite to the edge of the circuit board and positioned. It is characterized in that a protrusion is provided.

The invention of claim 3 is characterized in that the exhaust pipe projecting from the end of the fluorescent lamp projects from the circuit board. According to a fourth aspect of the present invention, a plurality of terminal pins are planted in the vicinity of the edge portion of the circuit board so as to be spaced apart from each other, and the lead wires led out from the end portions of the fluorescent lamp are connected to these terminal pins. It is characterized by that.

[0012]

According to the invention of claim 1, since the circuit board is provided with the edge part which partially covers the end surface of the fluorescent lamp, the structure is such that the circuit board is extended, and the effective mounting area of the circuit board is increased. , It is possible to increase the number of mounting points of the circuit components to increase the function, and to reduce the mounting density of the high frequency electronic lighting circuit components mounted on the circuit board, preventing mutual thermal influences. be able to. Also,
Since the edge portion of the circuit board covers the end surface of the fluorescent lamp, when the edge portion of the fluorescent lamp abuts this edge portion, the position of the lamp can be determined by this edge portion.

According to the second aspect of the invention, since the positioning protrusions for the fluorescent lamp are provided on the side opposite to the edge of the circuit board, the number of the positioning protrusions can be reduced. That is, even if the position of the lamp cannot be regulated by the positioning protrusion, the position of the lamp can be regulated by the edge portion of the circuit board as described above, so that the number of the positioning protrusion can be reduced.

According to the third aspect of the present invention, even if the edge of the circuit board is extended, it does not hit the exhaust pipe, so that it does not hinder the mounting of the fluorescent lamp, and the temperature of the exhaust pipe is increased. The rise is prevented.

According to the fourth aspect of the invention, since the edge portion of the circuit board covers the end portion of the fluorescent lamp, the terminal pin can be brought close to the fluorescent lamp. Therefore, the terminal pin is led out from the end portion of the fluorescent lamp. The spread angle of the lead wires can be increased, and it becomes difficult for the lead wires to contact each other.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on an embodiment shown in the drawings. In the figure, 1 is a cover made of heat-resistant synthetic resin such as PBT resin, and a cylindrical portion 2 is integrally formed at one end of this cover 1. This cylindrical part 2
A screw-type base 3 such as an E26 type is attached to the base, and the base 3 is fixed to the cylindrical portion 2 by an adhesive or caulking.

The other end of the cover 1 is closed by a partition board 4. The partition board 4 is also made of a heat-resistant synthetic resin such as PBT resin, and has a substantially circular dish shape. As shown in FIG. 2, the partition board 4 is formed with a flange portion 42 at the upper end opening edge of the rising side wall 41. The flange portion 42 also has a peripheral portion as shown in FIG. Two insertion notches 43, 43 are formed 180 degrees apart in the direction. These notches 4 for insertion
In contrast to 3, 3 and 43, the inner surface of the cover 1 is integrally formed with locking projections 11 and 11 through which these insertion notches 43 and 43 can be inserted. Therefore, the locking protrusions 11 and 11 are
When the upper partition board 4 is fitted into the opening of the cover 1 with the insertion cutout portions 43, 43 facing each other, the locking projections 11, 11 pass through the insertion cutout portions 43, 43, and the flange portion of the partition board 4 is inserted. When the partition 42 is located deeper than the locking projections 11 and the partition board 4 and the cover 1 are relatively rotated in this state, the locking projections 11 and 11 are engaged with the flange portion 42, whereby the partition board 4 is locked to the cover 1.

In this case, two notches 43, 43 for insertion and two locking projections 11, 11 are formed, and therefore, forgetting to fit them is prevented. In other words, when there are three or more insertion notches 43 and three locking projections 11, even if the user forgets to fit them at any one place, they can still be engaged like temporary fixing, and in this state. It is separated from one place when handled with a partition board 4 and a cover 1.
May separate. However, the insertion notches 43, 4
3 and two locking protrusions 11, 11 are formed,
If the fitting is forgotten to be fitted in some places, the partition board 4 and the cover 1 do not engage with each other, so that the above-mentioned problems can be prevented.

Fixed flanges 45, 45 are formed on the flange portion 41 of the partition board 4, and other fixed nails 45 are formed upright from the bottom wall at other positions of the partition board 4. The printed circuit board 60 of the lighting device 6 is locked to the fixing claws 45, so that the circuit board 60 is fixed to the partition board 4.

The lighting device 6 is located in the space covered by the cover 1 and is attached to the partition board 4. As shown in FIG. 3, the lighting device 6 includes a high frequency lighting circuit component 61 that uses a transistor inverter on a circuit board 60.
It is configured by implementing ... High frequency lighting circuit parts 61
For example, a well-known noise filter, a full-wave rectifier, a smoothing capacitor, a switching circuit including a transistor, a thyristor, a positive temperature coefficient thermistor, a choke ballast, a DC cut capacitor, and a resonance capacitor are used.

At one end of the circuit board 60, a pair of edge portions 62, 62 are formed by cutting the edge of the circuit board 60 into an arc shape or a polygonal shape, and these edge portions 6 are formed.
Terminal pins 63 ... Are provided in the vicinity of 2, 62 in a protruding manner.
These terminal pins 63 are electrically connected to the high frequency lighting circuit component 61, and external lead wires of the fluorescent lamp 7 described later are connected by means such as winding.
In this case, the terminal pins 63 are arranged in pairs with respect to the respective edge portions 62, 62, and the pair of terminal pins 63, 63 are arranged with respect to the center O of the bulb end portion 71 of the lamp 7. They are arranged so that the mutual spread angle α is 90 degrees or more. The terminal pins 63 are projected higher than the bulb end 71 of the lamp 7.

The bottom wall of the partition board 4 is integrally formed with lamp mounting cylinders 46, 46 having a lamp mounting hole 44. The fluorescent lamp 7 is mounted on the lamp mounting cylinders 46, 46.

The fluorescent lamp 7 may be U-shaped, W-shaped or the like, but a saddle-shaped fluorescent lamp is used in this embodiment. This saddle-shaped fluorescent lamp 7 has two ends 71 of a bulb 70,
71 are juxtaposed close to each other, and these end portions 7
1 and 71 has a central bent portion 72 bent in a U shape, and the central bent portion 72 has both end portions 71, 71.
It is bent so that it faces the same direction as. Electrodes 73 and 73 are sealed on both ends 71 and 71 of the valve, and a pair of external lead wires 74 connected to the electrodes 73 and 73 are led to the outside from the ends 71 and 71 of the valve 70, respectively. Has been.

The external lead wires 74 are connected to the terminal pins 63 provided on the circuit board 60 by being wound a plurality of times, for example. Further, the both ends 7 of the valve 70 are
Exhaust pipes 75, 75 are protruded at 1, 71, and an amalgam 76 for controlling the mercury vapor pressure during lighting is accommodated in at least one of the exhaust pipes 75, 75.

A phosphor coating (not shown) is formed on the inner surface of the bulb 70, and a rare gas such as argon is enclosed in the bulb. Such a fluorescent lamp 7 is
Both ends 71, 71 of the lamp mounting holes 44, 44 of the lamp mounting cylinders 46, 46 formed in the partition board 4,
It is inserted from below the partition board 4 and is fixed to the partition board 4 by a thermosetting adhesive 47 such as silicone filled between these end portions 71, 71 and the cylindrical portions 46, 46.
Further, the central bent portion 72 of the lamp 7 is joined to the lower surface of the partition board 4 by another adhesive 48. For this reason, the saddle type fluorescent lamp 7 has the two end portions 71, 71 and the central bent portion 72.
It is fixed to the partition board 4 at a total of three points.

Further, partition walls 51, 51 extending from the lamp mounting cylinder portions 46, 46 are formed on the upper surface of the partition board 4, and the upper end portions of these partition walls 51, 51 are shown in FIGS. As shown in FIG. 2, positioning protrusions 52, 52 are formed respectively. These positioning protrusions 52, 52 are provided on both ends 7 of the bent fluorescent lamp 7.
1, 71 from the bottom of the partition board 4 to the lamp mounting cylinders 46, 4
When inserted in 6, one of the ends 71, 71
Are to come into contact with any of the positioning projections 52, 52. That is, both ends 71 of the valve 70,
In some cases, the heights of the end portions of the 71 are uneven due to variations in processing. Therefore, as described above, when the end portion 71 having a higher position comes into contact with the positioning projection 52, Further, the insertion is prevented further and the mounting position of the entire lamp with respect to the partition board 4 is regulated.

In this case, the positioning projections 52, 52
Is 1 for each lamp mounting tube 46, 46
As shown in FIGS. 1 and 2, they are provided one by one, and are provided on the side opposite to the mounting position of the circuit board 60 with the lamp mounting cylinders 46, 46 as the center.

On the other hand, the circuit board 60 is extended so that its edge portions 62, 62 cover the lamp mounting holes 44, 44 surrounded by the partition walls 51, 51. The parts 62, 62 are adapted to partially face the end surface of the valve 70. Therefore, when the end portions 71, 71 of the bent fluorescent lamp 7 are inserted into the lamp mounting cylinder portions 46, 46 from below the partition board 4, the end portions 71, 71 of the fluorescent lamp 7 are originally used for the positioning described above. Protrusion 52
The position where the lamp is attached is regulated by abutting against the. However, if the position cannot be regulated by the positioning projection 52, the end portions 71, 71 of the fluorescent lamp 7 are fixed to the circuit board 60. One of the edge portions 62, 62 or both of them are brought into contact with each other, whereby the mounting position of the lamp can be regulated.

Therefore, the extended edge portions 62, 62 of the circuit board 60 perform the function of the positioning protrusions 52, 52, so that it is not necessary to form a plurality of positioning protrusions 52. Since the circuit board 60 can be extended as described above, the area of the circuit board 60 can be increased.

The adhesive 47 is filled in a portion which is not in contact with the exhaust pipe 75. Adhesive 47 is exhaust pipe 75
When it comes into contact with, the adhesive 47, which receives the heat of the electrode 73 and reaches a high temperature, transfers the heat to the exhaust pipe 75, and the temperature of the exhaust pipe 75 rises excessively. Therefore, there is a problem that the exhaust pipe 75 is damaged or the temperature of the amalgam 76 rises too much when the amalgam 76 is housed, and the mercury vapor pressure during lighting becomes too high. Therefore, the adhesive 47 is injected at a position lower than the end surface of the bulb 70. This prevents heat of the electrode 73 from being transferred to the thin tube 75 through the adhesive 47. However, the adhesive 47 is used for the electrodes 73, 73.
It is desirable to have a position where it is bonded to the valve wall around the.

The fluorescent lamp 7 is covered with a globe 8. The globe 8 is made of transparent or light-diffusing synthetic resin or glass, and has a cup shape with an open upper end. The globe 8 has an upper end opening formed to have a slightly smaller diameter to have a straight neck portion, and a flange portion 81 is formed at the opening end portion of the neck portion. Flange part 8
1, the locking recess 8 is provided at least at one position along the circumferential direction.
2 is formed. Flange 81 of the globe 8
Is inserted into a ring-shaped gap formed between the inner surface of the cover 1 and the rising side wall 41 of the partition board 4, and the adhesive 8
It is joined by 3 to the inner surface of the cover 1 and the rising side wall 41 of the partition board 4.

The operation of the embodiment having such a configuration will be described. When the end portions 71, 71 of the fluorescent lamp 7 are inserted into the mounting cylinder portions 46, 46 formed on the partition board 4 and fixed by the adhesive 47, the end portions 71, 71 of the fluorescent lamp 7 are as shown in FIG.
As shown in FIG. 5, the projection 52 for positioning formed on the partition wall 51 is brought into contact with the partition wall 51, so that the mounting position of the lamp is regulated. In this case, when the ends 71, 71 of the fluorescent lamp 7 cannot be regulated by the positioning projections 52 due to a positional shift or the like, the edge portions 62, 62 of the circuit board 60 have the lamp mounting holes 44, 44. Fluorescent lamp 7 because it covers
End portions 71, 71 of the circuit board 60 are edge portions 62, 62 of the circuit board 60.
It is possible to regulate the mounting position of the lamp.

Therefore, the edges 62, 6 of the circuit board 60 are
Since 2 functions as a positioning projection, it is not necessary to form a plurality of positioning projections 52. Therefore, the partition board 4 can be easily molded.

On the other hand, the circuit board 60 is extended so that its edge portion 62 covers the end portions 71, 71 of the lamp 7, so that the area of the circuit board 60 is increased. Therefore,
The effective mounting area of the circuit board 60 increases, the number of components mountable on the circuit component 60 can be increased, and the function can be increased. Further, since the mounting density of the high frequency electronic lighting circuit components 61 ... Mounted on the circuit board 60 can be reduced and the components 61 can be separated from each other,
Not only can the mounting work be facilitated, but the thermal effects of the components 61 can also be prevented.

In this case, the edge portion 62 of the circuit board 60 is formed so as to avoid the exhaust pipe 75 without covering the exhaust pipe 75, and the exhaust pipe 75 is projected higher than the circuit board 60. Therefore, as compared with the case where the exhaust pipe 75 is located in the space surrounded by the lamp mounting cylinder portions 46, 46 and the partition walls 51, 51 in which heat easily accumulates, excellent cooling performance is maintained.

Further, the edges 62, 62 of the circuit board 60 are
Since the fluorescent lamp 7 covers the end portions 71, 71, the terminal pins 63 provided on the edges 62, 62 of the circuit board 60 approach the fluorescent lamp 7 at the end portions 71, 71. Therefore, when connecting the external lead wires 74 ... Derived from the ends 71, 71 of the fluorescent lamp 7 to the terminal pins 63 ..., the opening angles of these external lead wires 74 .. Therefore, the external lead wires 74 are reliably prevented from contacting each other.

In the above embodiment, the fluorescent lamp 7
The glove 8 covering the cover 8 has a flange 81 and a locking recess 82 formed at least at one position in the circumferential direction. Therefore, when the glove 8 is bonded to the cover 1 and the partition board 4 with an adhesive 83, the glove 8 is not fixed. Loose and come off
There are no problems such as turning. That is, when the globe 8 is made of synthetic resin, the bondability between the synthetic resin and the silicone adhesive 83 is not as good as that of glass,
Therefore, the adhesive force between the end portion of the globe 8 and the adhesive 83 may decrease. On the other hand, if the flange portion 81 and the locking concave portion 82 are formed on the globe 8 as in the above-described embodiment, the flange portion 81 and the locking concave portion 82 are embedded in the adhesive agent 83, The withdrawal and rotation of the globe 8 are prevented.

In the light bulb type fluorescent lamp device of the above embodiment, the saddle type fluorescent lamp 7 is covered with the globe 8.
The globe 8 is not always used, but the lamp 7
The present invention can be implemented even with a bulb-type fluorescent lamp device that is used as it is exposed. Further, the edge portion 62 is not limited to the cutout shape that faces the exhaust pipe 75 of the valve 70, and may be a circular shape that surrounds the exhaust pipe 75.

[0039]

As described above, according to the invention of claim 1, since the area of the circuit board is increased, the number of mounting points of the circuit components can be increased and the function can be increased, and the high frequency electronic device mounted on the circuit board can be used. The packaging density of the lighting circuit components can be reduced, and mutual thermal influences can be prevented. Further, since the edge portion of the circuit board covers the end surface of the fluorescent lamp, when the edge portion of the fluorescent lamp comes into contact with this edge portion, the position of the lamp can be determined by this edge portion.

According to the second aspect of the present invention, the positioning projection formed on the side opposite to the edge of the circuit board has a small number of positioning projections because the circuit board assists the positioning operation. It is possible to simplify the structure.

According to the third aspect of the present invention, since the exhaust pipe projects from the circuit board, it does not hinder the attachment of the fluorescent lamp, and the temperature rise of the exhaust pipe is prevented. According to the invention of claim 4, since the edge portion of the circuit board covers the end portion of the fluorescent lamp, the terminal pin can be brought close to the fluorescent lamp. Therefore, the lead wire led out from the end portion of the fluorescent lamp is The divergence angle can be increased, and it becomes difficult for the lead wires to contact each other.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of the present invention in which a fluorescent lamp and a lighting device are attached to a partition board.

FIG. 2 is a sectional view taken along the line II-II in FIG.

FIG. 3 is a cross-sectional view showing the entire bulb-type fluorescent lamp device of the same embodiment.

FIG. 4 is an exploded perspective view of the glove according to the embodiment, omitting it.

FIG. 5 is an exploded perspective view showing a globe, a fluorescent lamp, and a partition board.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Cover 3 ... Base, 4 ... Divider 6 ... Lighting device 7 ... Bending fluorescent lamp 8 ... Globe 44 ... Mounting hole 46 ... Mounting cylinder 47 ... Adhesive 60 ... Circuit board 61 ... High frequency lighting circuit component 62 ... Edge Part 63 ... Terminal pin 70 ... Valve 71 ... Valve end 73 ... Electrode 74 ... External lead wire 75 ... Exhaust pipe

Claims (4)

[Claims] 1. A partition board is attached to the other end of a cover having a base at one end, and a circuit board having high-frequency lighting circuit parts mounted is attached to the inside of the cover side of the partition board,
A lamp mounting hole is formed in this partition board, an end portion of the fluorescent lamp is inserted into this lamp mounting hole, and the end portion of this fluorescent lamp is fixed to the partition board. A bulb-type fluorescent lamp device, characterized in that an edge portion which partially covers the end surface of the fluorescent lamp inserted into the lamp mounting hole is provided. 2. The partition board is provided with a protrusion at an inner end of the cover of the lamp mounting hole, the protrusion being located on the opposite side of the edge of the circuit board and brought into contact with the end face of the fluorescent lamp. The bulb-type fluorescent lamp device according to claim 1, wherein 3. The light bulb type fluorescent lamp device according to claim 1, wherein an exhaust pipe protruding from an end portion of the fluorescent lamp is projected from the circuit board. 4. A plurality of terminal pins are planted in the vicinity of the edge of the circuit board so as to be spaced apart from each other, and a lead wire led out from an end of the fluorescent lamp is connected to the terminal pins. The bulb-type fluorescent lamp device according to claim 1, wherein: