JPH07240176A - Light bulb type fluorescent lamp device - Google Patents

Abstract

(57) [Summary] [Purpose] When locking tongues are formed at symmetrical positions on the partitioning board,
(EN) Provided is a bulb-type fluorescent lamp device in which distorting deformation of a cover is prevented to prevent disengagement of a locking tongue piece. [Structure] In a light bulb type fluorescent lamp device in which a partition plate 4 is attached to the other end of a cover 1 provided with a base 3, and a fluorescent lamp 5 is attached to this partition plate 4, a radial position is provided at a symmetrical position of the partition plate. Elastic locking tongues 43, 43 are provided, and locking projections 11, 11 for locking the locking tongues are provided on the inner surface of the cover. Gap G1 or G between the outer peripheral surface of the partition board and the inner surface of the cover in the vicinity
The gap G2 between the outer peripheral surface of the partition board and the inner surface of the cover in the direction orthogonal to these was made smaller than 3. [Function] Since the gap G2 is made smaller than G3, when a force is applied in the direction orthogonal to the locking portion, the cover of this portion is covered.
The amount of reduction in diameter is controlled to be small, the cover diameter is prevented from expanding at the locking portion, and the locking tongue is unlikely to come off the locking projection.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention provides a partition plate at the other end of a cover provided with a base at one end, and a fluorescent lamp having a curved discharge path is attached to the outside of the partition plate, and at the same time, inside the cover. The present invention relates to a bulb-type fluorescent lamp device containing a lighting device.

[0002]

2. Description of the Related Art Recently, for example, JP-A-61-173446.
As shown in Japanese Patent Publication No. JP-A-2003-242, a fluorescent lamp device that can be used in place of an incandescent light bulb has been developed and is commercially available as a light bulb type fluorescent lamp device. This type of light bulb type fluorescent lamp device is provided with a partition plate at the other end of a resin cover having a screw-type base at one end, and a partition plate is provided outside the partition plate.
A fluorescent lamp having a bent discharge path such as a letter shape, H shape, W shape, saddle shape, etc. is attached, and a lighting device, for example, a high frequency lighting circuit component such as a ballast or a transistor inverter is housed in the cover. Is configured.

The fluorescent lamp is of a type in which it is used as it is exposed, and a type in which the outer circumference of this fluorescent lamp is covered with a transparent or light diffusing glove bonded to a cover.

Since this type of light bulb type fluorescent lamp device integrally includes a fluorescent lamp and a lighting device,
It can be used instead of an incandescent light bulb in a socket for an incandescent light bulb.In this case, compared to an incandescent light bulb, the total luminous flux is large, the luminous efficiency is high, and the life characteristics are outstanding. is there.

By the way, in this type of light bulb type fluorescent lamp device, when the partition board is attached to the cover, there is one that is joined by using an adhesive. However, when an adhesive is used, it takes a lot of time to apply and dry the adhesive, and to maintain the positioning between the cover and the partitioning machine, and the joining work is troublesome and the working time becomes long.

On the other hand, a flange portion is formed on the peripheral edge of the partitioning board, and a plurality of cutout portions are formed in the flange portion, and these cutout portions are passed through the locking projections formed on the inner surface of the cover to partition these partitions. There is also adopted a structure in which the flange portion of the partitioning board is hung on the locking projection of the cover by rotating the board and the cover relatively.
However, also in this case, since it is necessary to relatively rotate the partition board and the cover, the assembling work is troublesome, and a special means for preventing rotation is required.

[0007]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
Recently, three or four locking tongues are formed on the peripheral edge of a partitioning machine, and these locking tongues are elastically deformable in the radial direction. There is one configured to be locked by the locking projection formed on the inner surface of the. According to this, the locking tongue is elastically deformed and exceeds the locking projection by simply inserting the partition into the cover, and this elastically returns and locks on the locking projection, so that special turning operation etc. Is unnecessary and assembly is extremely easy.

However, the locking tongue piece is circumferentially arranged in three directions.
1 if more than 3 pieces are formed and the number of locking points is 3 or more
Even if the partition is not properly engaged, the partition may be locked to the cover at two or more other locations. In such a case, the partition may engage with the cover like a temporary fixing. is there. Even in this case, the operator may mistakenly recognize that all the locking portions are engaged and assemble them as they are. However, in this case, the locking is naturally unstable, which causes a problem such as disengagement during transportation.

In order to prevent such a problem, two locking points may be provided. That is, two locking tongues are provided at a symmetrical position of the partitioning board, that is, at an angle of 180 degrees in the circumferential direction, and a total of two locking tongues are engaged on the cover side. If the protrusion is provided, the partitioning board will not be caught when one of the locks is forgotten, and it is possible to prevent the lock from being forgotten at one place.

However, since the cover is formed of a synthetic resin such as PBT resin in the shape of a trumpet, the cover may be elastically deformed distorted when an external force is applied to the opening. In the case of the structure in which the partition tongue is engaged with the cover by using the locking tongues formed at the symmetrical positions as described above, the external force is applied to the cover in the direction orthogonal to these locking portions and in the direction of reducing the diameter of the cover. When the above is added, the diameter of the cover expands at the position of the locking tongue piece orthogonal to this,
That is, it elastically deforms so as to expand. Then, at this location, the locking protrusion is displaced outward, so that the locking protrusion escapes from the locking tongue, that is, the locking protrusion comes off, which may cause the partitioning board to come off from the cover.

The present invention has been made in view of the above circumstances. An object of the present invention is to form a locking tongue piece at a symmetrical position of a partition board and to engage the partition board with a locking projection of a cover. In the case of being attached by being installed, it is an object of the present invention to provide a light bulb type fluorescent lamp device in which the distorted deformation of the cover is prevented and the locking tongue piece is hard to be removed.

[0012]

According to a first aspect of the present invention, a base is provided at one end of a cover and a partitioning plate is provided at the other end.
A bulb-type fluorescent lamp device in which a fluorescent lamp having a bent discharge path is attached to the outside of this partitioning board, and a lighting device is provided in the cover partitioned by the partitioning board, in the outer peripheral portion of the partitioning board. , Provided with locking tongues which are spaced substantially symmetrically to each other and which are elastically deformable in the radial direction,
Locking projections for locking the locking tongues are provided on the inner surface of the cover, and the partition outer peripheral surface and the inner surface of the cover in the vicinity of the positions where the locking tongues and the locking projections lock. It is characterized in that the gap G2 between the outer peripheral surface of the partitioning board and the inner surface of the cover in the direction orthogonal to the gap G1 or G3 is formed smaller.

According to a second aspect of the present invention, one of the partition board and the cover is provided with a rotation preventing projection, and the other is provided with a hooking recess for engaging the rotation preventing projection to prevent the partition board from rotating. Is characterized by.

According to a third aspect of the present invention, the anti-rotation projection and the catching recess are provided at positions that are substantially 90 ° apart in the circumferential direction from the position where the locking tongue and the locking projection are locked. And

According to a fourth aspect of the present invention, the partitioning board is provided with a mounting tube portion into which both ends of the fluorescent lamp are inserted and joined, and the position of the mounting tube portion is locked with the locking tongue piece. It is characterized in that it is formed at a position distant in the circumferential direction from the place where the projection is engaged.

[0016]

According to the invention of claim 1, in the outer peripheral portion of the partition board,
In a partitioning board mounting structure, which is provided with locking tongues that are elastically deformable in the radial direction and are spaced apart from each other symmetrically, and also provided with locking protrusions that lock the locking tongues on the inner surface of the cover, At the position where the locking tongue and the locking projection are locked, a gap G between the outer peripheral surface of the partition board and the inner surface of the cover is provided.
Since the gap G2 between the outer peripheral surface of the partition board and the inner surface of the cover in the direction orthogonal to 1 or G3 is smaller than 1 or G3, when a force is applied from the outside to the position orthogonal to the locking position, Since the gap in the part is small, the cover reduces the amount of reduction in the diameter of the cover when it hits the partitioning board.Therefore, the expansion of the cover diameter is restricted at the above locking position, and the locking tongue is locked. It is prevented from coming off the protrusion.

According to the second aspect of the invention, the relative rotation of the partitioning board and the cover is prevented by the engagement of the detent projection and the hooking recess, so that the locking tongue and the locking projection are arranged in the circumferential direction. It is prevented from being displaced, and these detachments are prevented.

According to the third aspect of the present invention, since the engaging portions of the anti-rotation protrusion and the catching recess are provided at positions where the gap is small, the engaging of the anti-rotation protrusion and the engaging recess is accurate. It fits well and prevents rattling. Therefore, even if the gap G1 or G3 between the outer peripheral surface of the partitioning board and the inner surface of the cover is slightly large at the engaging positions of the locking tongue piece and the locking projection at symmetrical positions, these locking tongues do not rattle. It is possible to prevent the pieces and the locking projections from coming off.

According to the invention of claim 4, the position of the mounting tube portion for fixing both ends of the fluorescent lamp is circumferentially separated from the position where the locking tongue and the locking projection are locked. Since it is provided in the position, the locking tongue and the locking projection can be separated from the sealing end of the electrode that has a large temperature rise during the lighting of the fluorescent lamp in a distance. The cover does not expand due to heat being applied thereto, so that the disengagement of the locking tongue and the locking projection due to thermal deformation can be prevented.

[0020]

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 has a flange portion 42 formed at the upper end opening edge of a side wall 41 having a rising shape, and the flange portion 42 is circumferentially spaced apart as shown in FIG. And two locking tongues 43, 43 are formed. These locking tongues 43, 43 are formed at symmetrical positions so as to form an angle of about 180 degrees in the circumferential direction, and due to the slits 44 ...
It is formed so as to divide 2 in the circumferential direction. Therefore, the locking tongues 43, 43 are composed of a rising wall portion and a claw portion formed at the tip of the rising wall portion. The rising wall portion can be elastically deformed in the radial direction, and the claw portion of the tip end has a diameter. It can be displaced in any direction.

In contrast to such locking tongues 43, 43, locking projections 11, 11 for locking the locking tongues 43, 43 are integrally formed on the inner surface of the cover 1. That is, when the cover 1 and the partition board 4 are butted against each other along the central axis direction, the locking tongues 43, 43 are elastically deformed, and the claws thereof pass over the locking projections 11, 11, and these The locking tongues 43, 43 can be engaged with the locking projections 11, 11 without rotating the cover 1 and the partition board 4 relative to each other. Therefore, the partitioning board 4 has the locking tongues 43, 43 and the locking projections 11, 1, 3.
With the engagement of 1, the cover 1 is engaged.

The flange 42 of the partition board 4 is provided with either a rotation preventing projection or a catching recess in one direction perpendicular to the engaging tongues 43, 43 formed facing each other. In the example, the hook recess 45 is cut out. On the inner surface of the cover 1 facing the hooking recess 45, a detent protrusion 12 that fits into the hooking recess 45 is formed. These catching recesses 45
The anti-rotation projections 12 are adapted to be inserted into and removed from each other when the partition board 4 is brought into contact with and separated from the cover 1 along the center line direction, whereby the partition board 4 and the cover 1 are engaged. Are prevented from rotating relative to each other.

The cover 1 has a uniform diameter over the entire circumference and a uniform thickness. On the other hand, as shown in FIG. 3, the outer peripheral surface of the partition board 4, substantially the outer peripheral surface of the flange portion 42, is larger than the outer diameter D1 in the direction in which the locking tongues 43, 43 are provided. The outer diameter D2 in the orthogonal direction is large (D1 <D2). For this reason, the gap between the outer peripheral surface of the flange portion 42 and the inner surface of the cover 1 should not be larger than the engaging tongue piece 4.
Gap near the place where 3 and 43 are formed
A gap G2 in the direction orthogonal to G1 is smaller than G1 (G1> G2).

Since the locking tongues 43, 43 are elastically displaced, it is difficult to accurately measure the gap G1 between the outer peripheral surface of the locking tongue 43 and the inner surface of the cover 1. Therefore, the locking tongues 43, 4
It is also possible to measure the gap (shown as G3 in the drawing) between the outer peripheral surface of the flange portion 42 close to 3 and the inner surface of the cover 1. That is, since the gap G1 is almost the same as the gap G3, the gap G1 between the outer peripheral surface of the partition board 4 and the inner surface of the cover 1 at the position where the locking tongue 43 and the locking projection 11 are locked.
May be a gap G3 between the outer peripheral surface of the partitioning board 4 and the inner surface of the cover 1 at a position close to a position where the locking tongue piece 43 and the locking projection 11 are locked. It is defined as the vicinity of the position where the piece 43 and the locking projection 11 are locked.

The positions of the anti-rotation protrusion 12 and the hooking recess 45 are formed at G2 where the gap is small. Further, the partitioning board 4 has the locking tongue pieces 43,
Lamp mounting cylinders 46 and 46 are integrally formed at the other side in the direction orthogonal to 43, that is, at a position opposite to the position where the hooking recess 45 is formed. The fluorescent lamp 5 is mounted on the lamp mounting cylinders 46, 46.

The fluorescent lamp 5 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 5 has two ends 5 of the bulb 50.
1, 51 are sealed, and a central bent portion 52 bent in a U shape is provided between the both end portions 51, 51, and the central bent portion 52 faces the same direction as the both end portions 51, 51. It has been bent and formed. Electrodes 53, 53 (only one of which is shown in FIG. 1) shown in FIG. 1 are sealed in the both ends 51, 51, and a phosphor coating (not shown) is formed on the inner surface of the bulb. Then, thin tubes 54, 54 are projected from the both ends 51, 51.
The amalgam 55 is accommodated in at least one of the four. The amalgam 55 controls the mercury vapor pressure during lighting. The valve is filled with a rare gas such as argon.

In the saddle type fluorescent lamp 5 as described above, both end portions 51, 51 are inserted into the lamp mounting cylinder portions 46, 46 formed on the partition board 4 from the outside of the partition board 4, and the end portions 51, 51 are formed. A thermosetting adhesive 47 such as silicone is filled between the cylindrical parts 46 and 46 and is fixed to the partition board 4 by the adhesive 47. In this case, the adhesive 47 is filled all around the inner surfaces of the lamp mounting cylinders 46, 46, so that the outer peripheral surfaces of the ends 51, 51 of the bulb 50 are in contact with the adhesive 47 all around. Not only the joint strength of the lamp 5 is increased, but also the heat of the bulb ends 51, 51 whose temperature is raised by the electrode 53 is conducted to the partition board 4 through the adhesives 47, 47. Therefore, the amalgam 55 contained in the thin tube 54 is used. The temperature rise is prevented and the mercury vapor pressure is prevented from rising excessively.

Further, in such a joined state, the central bent portion 52 of the lamp 5 is joined to the lower surface of the partition board 4 by another adhesive 48. Therefore, the saddle-shaped fluorescent lamp 4 has a total of three end portions 51, 51 and a central bent portion 52.
It is fixed to the partition board 4 by some points.

Further, a lighting device 6 is attached to the partition board 4 in a space covered by the cover 1. The lighting device 6 may be a ballast or a glow starter for starting normally, but in the present embodiment, a high frequency lighting device using a transistor inverter is used. The high-frequency lighting device will not be described in detail, but it includes a well-known noise filter, full-wave rectifier, smoothing capacitor, switching circuit consisting of transistors and thyristors, positive temperature coefficient thermistors, choke ballasts, DC cut capacitors and resonance capacitors The lighting circuit components 61 are provided, and these lighting circuit components 61 are mounted on the printed wiring board 60. The wiring board 60 is placed on the upper surface of the partition board 4 and is mechanically locked to the partition board 4 by a hooking claw (not shown). The electrodes of the bent fluorescent lamp 5 are electrically connected to the lighting device 6 through external lead wires (not shown).

The fluorescent lamp 5 is covered with a globe 7. The globe 7 is made of transparent or light-diffusing synthetic resin or glass, and has a cup shape with an open upper end. The globe 7 has a straight neck portion 71 having a slightly smaller upper end opening.
As shown in FIG. 1, the neck portion 71 of the globe 7 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 cover 72 is bonded by the adhesive 72. And the rising side wall 41 of the partition board 4.

The operation of the embodiment having such a configuration will be described. If the partition board 4 is attached to the cover 1, the partition board 4
The two engaging tongue pieces 43, 43 formed at the symmetrical positions of the two are opposed to the two engaging protrusions 11, 11 formed on the inner surface of the cover -1, respectively, and the catching recess formed on the partition board 4 is formed. A rotation stopper protrusion 1 having 45 formed on the inner surface of the cover 1.
Face 2 When the partitioning board 4 is fitted into the opening of the cover 1 in this state, the rising side walls of the locking tongues 43, 43 are elastically deformed, and the claws at the tips thereof ride over the locking projections 11, 11, whereby the engagement The tongue pieces 43, 43 are locking protrusions 1.
1 and 11 are engaged. At this time, the hooking recessed portion 45 formed on the partitioning board 4 is formed on the cover 1 by the anti-rotation protrusion 12
Fit in.

Therefore, the partition board 4 can be engaged with the cover 1 without relatively rotating the cover 1 and the partition board 4. Further, in this engaged state, since the catching concave portion 45 and the anti-rotation protrusion 12 are engaged with each other, the cover 1 and the partition board 4 do not rotate relative to each other. Therefore, although the locking tongues 43 and 43 and the locking projections 11 and 2 are provided two by two, the locking tongues 4 are provided.
It is possible to prevent the partitioning board 4 from coming off from the cover 1 without the 3, 4 and the locking projections 11 and 11 being displaced in the circumferential direction and coming off.

Further, the gap between the flange portion 42 of the partitioning board 4 and the inner surface of the cover 1 is different from the gap G3 in the vicinity of the place where the locking tongues 43, 43 are formed.
Make the gap G2 located in the direction orthogonal to this smaller (G3
> G2) formed. Therefore, in the cover 1 in the direction where the locking projections 11 and 11 are formed and in the direction orthogonal to this,
When an external force is applied from the directions A and A in FIG. 3, the gap G2 in this direction is small, so that the inner surface of the cover 1 immediately contacts the flange portion 42, and the cover 1 is deformed in this direction, that is, the diameter is reduced. Is regulated. As a result, expansion of the diameter of the cover 1 in the direction orthogonal to the external forces A and A is restricted. That is, the positions where the locking projections 11 and 11 of the cover-1 and the locking tongues 43 and 43 are engaged are indicated by arrows B and B.
The deformation in the direction is prevented. Therefore, the locking projections 11 and 11 are prevented from coming off from the locking tongues 43 and 43, so that the partition board 4 is prevented from coming off from the cover 1.

Even if an external force in the direction opposite to the arrow B, B direction of the cover-1 is applied, this is deformed in the direction in which the locking projections 11, 11 are pressed against the locking tongues 43, 43.
There is no concern that the locking tongues 43, 43 will come off.

Since the engaging portion between the anti-rotation protrusion 12 and the hooking recess 45 is provided at the position G2 where the gap is small, the engagement between the anti-rotation protrusion 12 and the hooking recess 45 is accurately fitted. They can be engaged with each other without causing rattling and rattling with each other. From this,
The locking tongues 43, 43 and the locking projections 11, 1 in the symmetrical positions
Even if the gap G3 between the outer peripheral surface of the flange portion 42 and the inner surface of the cover 1 is formed to be slightly larger at the engaging position of No. 1, the rattle is prevented by the anti-rotation projection 12 and the catching concave portion 45. Therefore, it is possible to prevent the locking tongues 43, 43 and the locking projections 11, 11 from coming off.

When the lamp 5 is turned on, the electrode 5
The heat released from 3, 53 causes the valve ends 51, 5 to
The temperature of No. 1 rises, and this heat is transmitted to the partition board 4 through the mounting cylinder portions 46, 46. In this case, in the partition board 4, the temperature of the portion where the mounting cylinder portions 46, 46 are formed rises. Therefore, in the cover 1, these mounting cylinder portions 4
Areas close to 6 and 46 receive heat and expand.

Temporarily, the place where such thermal expansion occurs is
When the locking tongues 43 and 43 and the locking projections 11 and 11 are installed close to each other, the cover-1 is thermally expanded in the directions of arrows B and B, and the locking projections 11 and 11 are locked to the locking tongues 43 and. Four
Although there is a concern that the cover 1 may come off, the cover 1 is moved in the directions of the arrows B and B since the location where the thermal expansion occurs is located far from the location where the locking tongues 43, 43 and the locking projections 11, 11 are formed. It does not deform, so the locking projection 1
It is possible to prevent 1 and 11 from coming off from the locking tongues 43 and 43.

The present invention is not limited to the above embodiment. That is, in the light bulb type fluorescent lamp device of the above-mentioned embodiment, the fluorescent lamp 5 is covered by the globe 7, but the globe 7 is not always used, and the bulb 5 is used without removing the lamp 5. It can be implemented even with an optical lamp device.

In the above embodiment, the glove 7 is attached to the inner surface of the cover 1 and the rising side wall 4 of the partition board 4 with the adhesive 72.
Since it is adhered to both of 1 and 2, the partitioning board 4 has this adhesive 72
Since it is joined to the cover 1 by means of the adhesive 72 in addition to the engagement between the locking tongues 43, 43 and the locking projections 11, 11, the bonding strength is increased.

However, the partition board 4 is not limited to being bonded to the cover 1 by an adhesive, and thus the adhesive 72 only bonds the globe 7 to the inner surface of the cover 1 and does not bond the partition board 4. However, it can be implemented.

[0042]

As described above, according to the present invention, the two locking tongues formed on the partitioning board are push-fitted to the locking projections formed on the cover side, so that the structure is simple. However, the assembling work of both becomes easy. Moreover, in spite of the engagement between the two locking tongues and the locking projections, the outer peripheral surface of the partitioning board and the inner surface of the cover near the engaging portion between the locking tongues and the locking projections. A small gap is formed between the outer peripheral surface of the partition board and the inner surface of the cover in a direction orthogonal to the gap, so that the cover can be prevented from being deformed distorted when an external force is applied to the cover. , It becomes difficult for the locking tongue to come off the locking projection. Therefore, the engagement between the partitioning board and the cover is reliably maintained, and the reliability is improved.

[Brief description of drawings]

FIG. 1 is a sectional view of an entire bulb-type fluorescent lamp device showing an embodiment of the present invention.

FIG. 2 is an exploded perspective view showing the glove according to the embodiment with illustration thereof omitted.

FIG. 3 is a cross-sectional view showing an engaging portion between a partition board and a cover of the embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Cover 3 ... Base, 4 ... Partition board 5 ... Bending fluorescent lamp 6 ... Lighting device 7 ... Globe 11 ... Locking protrusion 12 ... Rotation stop protrusion 41 ... Standing side wall 42 ... Flange part 43 ... Locking tongue piece 45 ... catching recess 46 ... mounting cylinder 50 ... valve 51 ... valve end 53 ... electrodes G1, G2, G3 ... gap

Claims (4)

[Claims] 1. A cover provided with a base at one end and a partition plate at the other end, and a fluorescent lamp having a curved discharge path is attached to the outside of the partition plate, and inside the cover partitioned by the partition plate. In the bulb-type fluorescent lamp device provided with a lighting device for maintaining the lighting of the fluorescent lamp, in the outer peripheral portion of the partition board, separated from each other in substantially symmetrical positions,
Locking tongues that are elastically deformable in the radial direction are provided, and locking projections that are locked by the locking tongues are provided on the inner surface of the cover, and the locking tongues and the locking projections are locked. A light bulb type fluorescent lamp characterized in that a gap between the outer peripheral surface of the partition board and the inner surface of the cover in a direction orthogonal to the gap between the outer peripheral surface of the partition board and the inner surface of the cover in the vicinity of the location is formed smaller. apparatus. 2. A rotation preventing projection is provided on one of the partitioning board and the cover, and a hooking recess is provided on the other side of the partitioning board to prevent the partitioning board from rotating. The bulb-type fluorescent lamp device according to claim 1. 3. The anti-rotation protrusion and the catching recess are provided at positions that are substantially 90 ° apart in the circumferential direction from the position at which the locking tongue and the locking protrusion are locked. Two
The bulb-type fluorescent lamp device described in. 4. The partitioning board is formed with a mounting tube portion into which both ends of the fluorescent lamp are inserted and joined, and the position of the mounting tube portion is associated with the locking tongue and the locking projection. The bulb-type fluorescent lamp device according to claim 1, wherein the bulb-type fluorescent lamp device is formed at a position separated from a stopping position in the circumferential direction.