JPH012202A - fluorescent lamp device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention provides a lighting circuit component that is housed in a cover having a cap at one end, and a closing member provided at the other end of the cover. The present invention relates to a single-capped fluorescent lamp device in which a bent fluorescent lamp, for example, is supported on the outside of the closing member.

(Prior Art) Conventionally, a ballast or high-frequency lighting circuit component is housed in a cover with a screw-in base for an incandescent light bulb attached to one end, and a U-shaped, W-shaped, saddle-shaped, or other bent shape is attached to the other end of the cover. Fluorescent lamp devices with shaped fluorescent lamps have been developed. This type of fluorescent lamp device is becoming popular as an energy-saving light source because it is compatible with incandescent light bulbs.

However, the fluorescent lamps used in this type of fluorescent lamp device are required to have high output because they are arranged compactly and centrally in a limited space, and therefore the amount of heat generated by the lamp itself is extremely large. . The heat generated from such a high-output fluorescent lamp not only excessively increases the bulb temperature, but also causes heat transfer to the ballast or high-frequency lighting circuit components in the cover, causing thermal damage.

In order to prevent such thermal effects, the opening at the other end of the cover is closed with a closing member to block the heat generated by the fluorescent lamp so that it does not reach the lighting circuit components inside the cover through convection. being done.

Therefore, in such a fluorescent lamp device,
It is necessary to install a ballast and high-frequency lighting circuit components within the cover, and it is also necessary to fix a closing member to the opening of the cover.

For this reason, in the past, a rising fitting circumferential wall was formed around the entire circumference of the closing member, and a plurality of cut and raised protrusions were provided on the inner surface of the fitting circumferential wall, so that the circuit board supporting the lighting circuit component could be fitted. It fitted into the peripheral wall and was prevented from coming off by the cut and raised projections.

Further, the closing member is provided with a flange portion and a recess is formed in the flange portion, and the opening of the cover is formed with a locking groove in which the flange portion slides and engages in the circumferential direction through the recess, After the locking groove and the flange are temporarily fixed, the closure member is joined to the cover using a silicone adhesive.

(Problems to be Solved by the Invention) However, in the conventional structure described above, the circuit board supporting the lighting circuit components and the cover are attached to all (separate positions) of the closing member, so the structure of the closing member becomes complicated. , molding requires time and effort.

Further, since the final bonding is performed using an adhesive after the temporary fixing, not only a temporary fixing structure is required, but also a two-step assembly is required, resulting in problems such as requiring time and effort for assembly.

The present invention aims to provide a fluorescent lamp device which has a simple structure and requires no effort to assemble by simultaneously fixing a cover and preventing the circuit board from coming off in a common part. It is.

[Structure of the Invention] (Means for Solving the Problems) The present invention includes forming a plurality of rising tongues at intervals in the circumferential direction on the closure member, and forming a plurality of rising tongues on the inner and outer surfaces of each of these rising tongues. A locking protrusion is provided protrudingly, and a locking recess is provided on the inner surface of the cover, and the circuit board supporting the lighting circuit component has an outer diameter that fits inside the rising tongue piece. A locking protrusion protruding from the outer surface of the tongue piece engages with a locking recess formed on the inner surface of the cover to connect the closing member and the cover, and a locking protrusion protruding from the inner surface of the rising tongue piece. The present invention is characterized in that the protrusion is engaged with the periphery of the circuit board to prevent the circuit board from coming off.

(Function) According to the present invention, locking protrusions are provided on both the inner and outer surfaces of the rising tongue piece formed on the closing member, so that the locking protrusions protruding from the outer surface engage with the cover, and the locking protrusions protruding from the inner surface are provided. Since the locking protrusion prevents the circuit board from coming off and presses it down, the rising tongue piece can simultaneously fix the cover and prevent the circuit board from coming off, which simplifies the structure of the closing member. The assembly is easy because the circuit board is inserted into the inside of the rising tongue piece and the cover is press-fitted to the outside.

(Example) The present invention will be described below based on an example shown in the drawings.

FIG. 4 shows a cross-sectional view of the entire assembled state. 1 is a cover made of synthetic resin, and one end of this cover 1 has a cylindrical part 2.
is integrally provided in a protruding manner, and a cap 3 is attached to this cylindrical portion 2. The cap 3 is of a screw-in type, for example, an E26 type, and is fixed to the cylindrical portion 2 with an adhesive, caulking, or the like.

A closing member 4 made of, for example, synthetic resin is attached to the opening at the other end of the cover 1, and the opening of the cover 1 is closed with this closing member 4.

This closing member 4 is composed of a pair of disk-shaped partition plates 5.6 spaced apart in the axial direction, and these partition plates 5.6 are arranged in a predetermined manner by connecting lips 7 interposed between them. They are facing each other with a distance between them. Therefore, a heat insulating air M8 is formed between these partition plates 5 and 6 which are spaced apart and facing each other. This heat insulating air layer 8 is communicated with the outside around the entire circumference.

One disk-shaped partition plate 5 of the closing member 4 is formed with a fitting peripheral wall 9 into which the other end opening of the cover 1 fits,
The outer side of this fitting peripheral wall 9 is covered with the opening of the cover 1 .

The fitting circumferential wall 9 is formed with rising tongue pieces 10 separated from the fitting circumferential wall 9 at intervals in the circumferential direction, and these rising tongue pieces 10 allow the cover 1 to close to the closing member 4. is combined with Note that this bonding structure will be explained later.

Therefore, the inside of the cover 1 constitutes a room 11 separated from the outside by the closing member 4.

A high-frequency lighting circuit component 12 as a lighting circuit component is housed in the chamber 11 within the cover 1 .

The high frequency lighting circuit component 12 is attached to a circuit board 13, which has a disk shape, and a flange portion around the circuit board 13 is adapted to be fitted inside the fitting peripheral wall 9. Support ribs 14 are formed on the inner surface of the fitting peripheral wall 9 at intervals in the circumferential direction, and the seven flange portions of the circuit board 13 are placed on the upper ends of these support ribs 14. As will be described later, the circuit board 13 is prevented from coming off by the rising tongue pieces 10.

Ventilation holes 15 are formed in the side wall of the cover 1 to communicate the room 10 with outside air.

A bent fluorescent lamp 16 is attached to the other disc-shaped partition plate 6 of the closing member 4.

The bent fluorescent lamp 16 may be U-shaped, W-shaped, etc., but in this embodiment, two U-shaped glass bulbs 17 are used.
A fluorescent lamp is used in which a saddle-shaped discharge path is formed by arranging the lamps 17a and 17b side by side. This fluorescent lamp 15 consists of two glass bulbs 17a and 1 which are pre-processed into a U-shape.
7b are arranged in parallel to each other and their respective ends are fused and joined. Electrodes (not shown) are sealed to the other ends of the two U-shaped glass bulbs 17a and 17b. External lead wires 18 connected to these electrodes pass through the closing member 4, are guided into the cover 1, and are electrically connected to the frequency lighting circuit component 12 above.

Note that a phosphor coating (not shown) is coated on the inner surface of this bulb.

Such a bent fluorescent lamp 16 has both ends and a fused portion fixed to the other disc-shaped partition plate 6 of the ship closing member 4 via an adhesive 19.

The adhesive points of both ends and the fused portion of the fluorescent lamp 15 are hidden from the bottom side by a cover plate 20 made of synthetic resin. , or fixed by means such as fitting.

Thus, the rising tongue piece 10 formed on the closing member 4
... will be explained.

That is, the rising tongue pieces 10... are shown in FIGS. 2 and 3.
As shown in the figure, the tongue pieces 10 are separated from the fitting peripheral wall 9 and are independent, and the tips of the independent rising tongue pieces 10 can be elastically displaced in the radial direction. The center walls of the rising tongues 10 are hollowed out in the inner and outer directions, and by having such openings 25, the rising tongues 10 are gate-shaped.

A locking protrusion having an arrow-shaped cross section is formed at the upper end of the opening 25. The locking protrusion, which has an arrow-shaped cross section, has its maximum thickness protruding 26,27 from both the inner and outer surfaces of the rising tongue piece 10.

A locking recess 28 is formed on the inner surface of the cover 1, facing the locking protrusion 27 that protrudes outward from the rising tongue piece 10.
... are formed, and these locking protrusions 27 and locking recesses 28 engage with each other. The closing member 4 is attached to the cover 1 by this engagement.

Furthermore, the locking protrusions 26 that protrude inwardly from the rising tongue pieces 10 are fitted inside the fitting peripheral wall 9 and are attached to the support ribs 14! It engages with the upper edge of the flange portion of the placed circuit board 13, thereby restraining the circuit board 13 from moving in the axial direction and preventing it from coming off.

The operation of the embodiment with such a configuration will be explained.

The bent fluorescent lamp 16 is attached to the closing member 4 via an adhesive 19, and then the closing member 4 is made to support the circuit board 13 on which the high frequency lighting circuit component 12 is attached. To attach the circuit board 13 to the closing member 4, the circuit board 13 is fitted inside the fitting peripheral wall 9 and placed on the support ribs 14. At this time, when the circuit board 13 passes over the locking projections 26 that protrude inward from the rising tongue pieces 10...
The tips of the rising tongues 10 are elastically deformed slightly outward, so that the circuit board 13 comes into contact with the upper end of the support rib 14. And 1 for the support rib 14! placed circuit board 1
On the upper edge side of the flange portion of No. 3, the above-mentioned rising tongue piece 10...
By elastically returning the tips of the inwards, the locking protrusions 26 protruding inward are engaged, thereby preventing the circuit board 13 from moving in the axial direction and being supported to prevent it from coming off.

When the high frequency lighting circuit component 12 is fixed to the closing member 4 in this manner, the external lead wire 18 of the fluorescent lamp 16 and
... is electrically connected to the high frequency lighting circuit component 12.

Next, the cover 1 is attached to the closing member 4. In this case, the cover 1 is placed over the fitting joint 119 so that the locking recesses 28 formed on the inner surface of the cover 1 are opposed to the locking protrusions 27 that protrude outward from the rising tongue pieces 10. . Then, the locking protrusions 27 projecting outward from the rising tongues 10 come into sliding contact with the inner surface of the cover 1, and the tips of the rising tongues 10 are slightly elastically deformed inward.
, allowing passage of cover 1. And the locking recess 2 of the cover 1
8... opposes the locking protrusion 27 protruding outside of the rising tongue piece 10..., the rising tongue piece 10...
The tip of the locking projection 27 elastically returns to the outside.
... and the locking recess 28... engage with each other.

Therefore, the cover 1 is coupled to the closure member 4 by this engagement.

Note that when the tips of the rising tongues 10 are elastically deformed inward, there is a circuit board 13 inside the rising tongues 10, and this circuit board 13 causes the rising tongues to Although the elastic deformation of the locking protrusions 27 and the cover 1 themselves work together, the cover 1 is allowed to pass through.

Therefore, according to such an embodiment, the rising tongue pieces 10 formed integrally with the closing member 4 are connected to the circuit board 1.
3 and to connect the cover 1, the structure of the closing member is simplified.

In order to form the locking protrusions 26, 27 on the rising tongue pieces 10..., the locking protrusions 26, 27 are formed using a mold, but the openings 25 that conduct in the inner and outer directions are formed on the rising tongue pieces 10... Therefore, the mold can be prevented from being lost in the radial direction, and it becomes easy to form the locking protrusions 26 and 27 on both the inner and outer surfaces of the rising tongue pieces 10.

Further, when assembling, it is only necessary to fit the circuit board 13 to the closing member 4 and then cover the cover 1, which makes the work simple, and there is no need to use adhesive or the like to connect these three parts. Assembly efficiency also improves.

In the case of this embodiment, since the fitting circumferential wall 9 is formed on the closing member 4, even if an external force that deforms the cover 1 from the outside in the radial direction is applied, the fitting circumferential wall 9 , and the proportion of the rising tongue piece 10 that acts on it is reduced. Therefore, undesired elastic deformation of the rising tongue pieces 10 does not occur, and problems such as the cover 1 coming off do not occur. In particular, on the inside of the fitting peripheral wall 9, there is a support rib 14.
Since the circuit board 13 is fitted with the bent circuit board 13, there is no deformation of the fitting peripheral wall 9, and undesired elastic deformation of the rising tongue pieces 10 is reliably prevented.

In addition, in the case of this embodiment, the bent fluorescent lamp 1 that is lit
Since the bent fluorescent lamp 16 is directly exposed to the outside, the heat generated by the lamp 6 is radiated directly to the outside air, and is also transmitted to the cover 1 side by the heat blocking effect of the heat insulating air layer 8 formed in the closing member 4. Therefore, the high frequency lighting circuit component 12 housed in the cover 1 is prevented from being subjected to heat loss 11 due to the heat of the fluorescent lamp 16.

The present invention is not limited to the above embodiments.

That is, in the above embodiment, the bent fluorescent lamp 15 is used as it is exposed, but the present invention can also be implemented with a fluorescent lamp device having a structure in which the bent fluorescent lamp is covered with a transparent or translucent globe. It is.

Moreover, the insulation air IIQ is not necessarily limited to being formed.

Furthermore, as a lighting circuit component, a high frequency lighting circuit component 11 is used.
In addition to this, it is also possible to use a choke coil type ballast.

Furthermore, the present invention may be a bent fluorescent lamp, such as one configured by connecting three U-shaped bulbs, or a saddle-shaped fluorescent lamp, and the fluorescent lamp is limited to a bent type. Instead, the present invention may be applied to a fluorescent lamp called a separate inner tube type.

[Effects of the Invention] As explained above, according to the present invention, among the locking protrusions formed on both the inner and outer surfaces of the rising tongue piece formed on the closing member,
The locking protrusion protruding from the outer surface engages with the cover, and
Since the locking protrusion protruding from the inner surface prevents and holds down the circuit board, the raised tongue piece can simultaneously fix the cover and prevent the circuit board from coming off, thus improving the structure of the closing member. It becomes easy. Further, since the assembly is performed by fitting the circuit board into the inside of the rising tongue piece and press-fitting the cover to the outside, the assembly is easy and requires no effort.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; FIG. 1 is an exploded perspective view of the main part, FIG. 2 is a perspective view of the rising tongue, FIG. 3 is an enlarged sectional view of the main part in an assembled state, and FIG. FIG. 4 is a sectional view of the entire assembled state. 1 Cover, 2... Cylindrical part, 3... Base, 4... Closure, 5.6... Partition plate, 8... Insulating air layer,
9... Fitting peripheral wall, 10... Standing tongue piece, 16...
- Bent fluorescent lamp, 25...opening, 26...
Inner engagement protrusion, 21... Outer engagement protrusion, 28... Engagement recess. Figure 1 10 nJ Nika N”lJ Hu Figure 2 Figure 3

Claims (2)

[Claims] (1) A cap is provided at one end of the cover, and a closing member is provided at the opening at the other end, a lighting circuit component supported by a circuit board is accommodated within this cover, and a fluorescent lamp is attached to the outside of the closing member. In the fluorescent lamp device, a plurality of rising tongues are formed at intervals in the circumferential direction on the closing member, locking protrusions are provided on the inner and outer surfaces of the rising tongues, respectively, and locking protrusions are provided on the inner surface of the cover. is provided with a locking recess, and the circuit board supporting the lighting circuit component has an outer diameter that fits inside the rising tongue, and a locking protrusion protruding from the outer surface of the rising tongue The closing member and the cover are connected by engaging with the locking recess formed on the inner surface of the cover, and the locking protrusion protruding from the inner surface of the rising tongue locks with the periphery of the circuit board to close the circuit. A fluorescent lamp device characterized by preventing the board from coming off. (2) The above-mentioned closing member is characterized in that a fitting peripheral wall is formed on the same circumference and is located between the rising tongue pieces formed at intervals in the circumferential direction. The fluorescent lamp device according to item 1.