JPH0544963Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Objective of the Invention] (Field of Industrial Application) The present invention relates to a single-capped fluorescent lamp device in which a cover supports a bent fluorescent lamp.

(Prior Art) Conventionally, a ballast or high-frequency lighting circuit component is housed in a cover with a screw-in base for an incandescent lamp attached to one end, and a fluorescent lamp,
Fluorescent lamp assemblies have been developed that include bent fluorescent lamps, such as U-shaped, W-shaped, saddle-shaped, etc. shaped fluorescent lamps.

This type of fluorescent lamp device is becoming popular as an energy-saving light source because it is compatible with incandescent light bulbs.

By the way, the cover of this type of fluorescent lamp device has a circular cross section due to the relationship with the equipment to which it is attached, and a bent fluorescent lamp attached to this cover has an outer outline smaller than the diameter of the cover. There are many things that do this.

Therefore, such a fluorescent lamp device,
When placed horizontally on a table, floor, or other placement surface, the large-diameter cover portion comes into contact with the placement surface.

(Problem to be solved by the invention) However, if the fluorescent lamp device is placed with its center line approximately parallel to the mounting surface and only the side surface of the circular cross-section cover part is in contact with the mounting surface, this fluorescent lamp device The light lamp device rolls sideways and its rolling range is large, and there are concerns that it may be damaged due to rolling inertia and collide with other objects, or may be damaged due to falling from the mounting surface.

The present invention provides a fluorescent lamp that reduces the force or impact force applied to the tip of the fluorescent lamp, prevents or reduces rolling of the fluorescent lamp device, and reduces rolling inertia to prevent damage. The aim is to provide equipment.

[Structure of the invention] (Means for solving the problem) In the present invention, a lighting circuit component attached to a circuit board is housed in a cover having a circular cross section, and a power supply member is attached to one end of the cover. In the fluorescent lamp device, the lighting circuit component attached to the circuit board is arranged to face the power supply member, and the lighting circuit component attached to the circuit board is arranged to face the power supply member, The entire center of gravity is located closer to the lamp than the maximum diameter part of the cover, and is supported by the mounting surface at the tip of the lamp and any part closer to the power supply member than the center of gravity. It is characterized by

(Function) According to the present invention, the lighting circuit components attached to the circuit board within the cover having a circular cross section are arranged facing toward the power supply member, and the center of gravity of the entire fluorescent lamp device is located within the cover. It is now located closer to the lamp than the maximum diameter part, and also relatively to the maximum diameter part compared to the center of the lamp, so this lamp device was placed horizontally on the mounting surface. In this case, the force applied to the tip of the lamp is reduced, and the impact force generated when the lamp is placed horizontally on a mounting surface is also reduced, making it difficult for cracks to occur in the tip of the lamp, which tends to be distorted during manufacturing.

In addition, since the lamp device is supported by the mounting surface at at least two places, the tip of the lamp and the part closer to the power supply member than the center of gravity, it prevents or reduces rolling, reduces rolling inertia, and prevents damage. etc. can be prevented.

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

FIG. 1 is a cross-sectional view of the fluorescent lamp device placed horizontally with respect to the mounting surface P, and numeral 1 indicates a cover made of synthetic resin. This cover 1 has a substantially bowl-shaped cross section with a small diameter cylindrical portion 2 protruding from one end. A cap 3, which is a power supply member, is attached to the cylindrical portion 2.
For example, it is a screw-in type such as the E26 type, and is fixed to the cylindrical portion 2 with adhesive or caulking.

The opening at the other end of the cover 1 has the largest diameter, and a closing member 4 made of, for example, synthetic resin is attached to this opening. The opening of the cover 1 is closed by this closing member 4. This closing member 4 is composed of a pair of disk-shaped partitions 5 and 6 that are spaced apart in the axial direction, and these partitions 5 and 6 are arranged in a predetermined manner by connecting ribs 7 interposed between them. They are facing each other with a distance between them. Therefore, a heat insulating air layer 8 is formed between these partition boards 5 and 6 which are spaced apart and facing each other, and this heat insulating air layer 8 is communicated with the outside over the entire circumference.

One of the disc-shaped partitions 5 of the closing member 4 is formed with a fitting peripheral wall 9 into which the other end opening of the cover 1 is fitted, and this fitting peripheral wall 9 is provided with the other end of the cover 1. The opening is capped and fixed by adhesive, caulking, engagement, or other means. Therefore, the inside of the cover 1 constitutes a room 10 separated from the outside by the closing member 4.

Inside the chamber 10 of the cover 1, a high frequency lighting circuit component 11 as a lighting circuit component is housed. The high frequency lighting circuit component 11 is attached to a circuit board 12, and this circuit board 12 is fixed to a support stand 13 provided on the disc-shaped partition board 5. At this time, the lighting circuit component 11 attached to the circuit board 12 is arranged toward the base 3.

Ventilation holes 14 are formed in the side wall of the cover 1 to communicate the room 10 with outside air.

A bent fluorescent lamp 15 is attached to the other disc-shaped partition panel 6 of the closing member 4.

In this embodiment, the bent fluorescent lamp 15 is as follows:
A fluorescent lamp is used in which two U-shaped glass bulbs 16a and 16b are placed side by side to form a saddle-shaped discharge path. This fluorescent lamp 15 consists of two glass bulbs 16a and 16b that have been pre-processed into a U-shape and are arranged in parallel to each other, and one end of each of the glass bulbs 16a and 16b is fused together (17).
It was then joined together. Electrodes 18a and 18b (only one is shown) are sealed to the other ends of the two U-shaped glass bulbs 16a and 16b, respectively.

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

Such a bent fluorescent lamp 15 has both ends and a fused portion fixed to the other disk-shaped partition plate 6 of the closing member 4 via an adhesive 19.

In this case, the fluorescent lamp 15 is connected to the two U
Since the shape glass bulbs 16a and 16b are joined together, the lamp device has a non-circular shape around the center line O-O, and the diameter of the outer line is smaller than the maximum diameter at the opening of the cover 1. It is formed.

The bent fluorescent lamp 15 is in a rotating posture as shown in FIG. In the case of other rotational postures shown in FIG. It's summery.

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.
0 is fixed to the disc-shaped partition board 6 by means of adhesive or fitting.

The cover plate 20 has a fused portion 1 that joins each end of the two glass bulbs 16a and 16b to each other.
7, a concealing plate portion 2 that hides this fused portion 17
1 and 21 are provided protrudingly. In the fused portion 17, the shape of the glass fused portion is irregular, and since no phosphor coating is formed on this fused portion 17,
It appears to shine during lighting, and therefore this fused portion 17
As shown in FIG. 3, it is hidden by concealment plate parts 21, 21.

In a fluorescent lamp device having such a configuration, the center of gravity G of the entire device is located closer to the lamp 1 than the maximum diameter of the cover 1.
It is set on the 5th side. The position of the center of gravity G can be selected by making the fluorescent lamp 15 longer or by shifting the mounting position of the circuit board 12 to which the high-frequency lighting circuit component 11 is attached inside the cover 1 in the axial direction. can do.

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

The fluorescent lamp device described above is used by screwing the base 3 into a socket on the power supply side (not shown). The bent fluorescent lamp 15 generates heat during lighting, but since the bent fluorescent lamp 15 is directly exposed to the outside, the heat of the lamp 15 is radiated directly to the outside air, and the heat is also transferred to the insulating air formed in the closing member 4. The heat shielding effect of the layer 8 prevents the heat from being transmitted to the cover 1 side, so that the high frequency lighting circuit component 11 housed within the cover 1 will not be thermally damaged by the heat of the fluorescent lamp 15.

Further, such a fluorescent lamp device may be removed from a socket and placed horizontally on a mounting surface P such as a table or floor.

In this case, since the center of gravity G of the fluorescent lamp device is set closer to the lamp 15 than the maximum diameter part of the cover 1 side, as shown in FIG. The maximum diameter part on the cover 1 side, which is the part, substantially the corner part of the cover plate 20, and the two parts separated from each other at the tip of the lamp 15.
A total of three points, points m and m, are in contact with the mounting surface P at the same time, and therefore the fluorescent lamp device is aligned with the center line O-O.
is placed on the mounting surface P in an inclined position. Therefore, the circuit board 12 is placed inside the cover 1 having a circular cross section.
The lighting circuit component 11 attached to the base 3
Since the fluorescent lamp device is arranged facing in the direction, the center of gravity G of the entire fluorescent lamp device is located closer to the lamp 15 than the maximum diameter part of the cover 1, and when the lamp device is placed horizontally on the mounting surface. When the lamp 1 is placed on its side, the force applied to the tip of the lamp 1 is reduced, and the impact force generated when the lamp 1 is placed on its side is reduced.
Cracks are less likely to occur at the tip.

Even if the fluorescent lamp device tries to roll in this state, since the fluorescent lamp 15 is made by joining two U-shaped glass bulbs 16a and 16b side by side, the part in contact with the mounting surface P is As shown, the tips of the two U-shaped glass bulbs 16a and 16b are at two points m and m separated from each other, and in this case, they do not roll on the mounting surface P.

When placing the fluorescent lamp device on the mounting surface P, one U-shaped glass bulb 16 is rotated 90 degrees from the state shown in FIG. 2, as shown in FIG.
The tips n of a and 16b may be in contact with the mounting surface P. In this case, since the tip n is a curved surface, it will try to roll, but this rolling angle is at most 90°.
The rolling range and rolling inertia are extremely small. Therefore, it will not roll and fall from the mounting surface P, and will not be damaged by hitting other objects.

Note that although the fluorescent lamp device does not roll in the state shown in Fig. 2, even if you try to force it to roll, the fluorescent lamp device will not be able to roll at the same time as the largest diameter portion and the tip portion of the lamp 15, which has a smaller diameter. The fluorescent lamp device is in contact with the mounting surface P and therefore the center line O-O
Since it is laid down in an inclined position, it rotates in a certain area, similar to when a cone is laid down and rolled. Therefore, the rolling range is small and it does not roll far.

Note that the present invention is not limited to the above embodiments.

That is, in the above embodiment, a bent fluorescent lamp consisting of two U-shaped bulbs joined together was used, but a lamp made up of three U-shaped bulbs connected together, a saddle-shaped fluorescent lamp, and an H-shaped fluorescent lamp may also be used. It may also be a fluorescent lamp in the shape of a letter, a lamp in which bulbs in the shape of an H are placed facing each other, or the like.

Further, in the present invention, the cap 3 is not limited to a screw type, but may be a pin type.

Furthermore, the presence of the closing member 4 and the heat insulating air layer 8 is not limited to the embodiment.

[Effect of the invention] As explained above, according to the invention, the lighting circuit components attached to the circuit board within the cover having a circular cross section are arranged facing toward the power supply member, so that the entire fluorescent lamp device The center of gravity of the lamp is now located closer to the lamp than the maximum diameter of the cover, and when this lamp device is placed horizontally on a mounting surface, the force applied to the tip of the lamp is reduced. In addition, the impact force generated when the lamp is placed horizontally on a mounting surface is reduced, and cracks are less likely to occur at the tip of the lamp, which tends to be distorted during manufacturing.

In addition, since the lamp device is supported by the mounting surface at at least two places, the tip of the lamp and the part closer to the power supply member than the center of gravity, it prevents or reduces rolling, reduces rolling inertia, and prevents damage. etc. can be prevented.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a cross-sectional view of a fluorescent lamp device lying on a mounting surface, Fig. 2 is a view taken along the arrow - in Fig. 1, and Fig.
The figure is a side view of the fluorescent lamp device laid down on the mounting surface in another position, and Figure 4 is the middle of Figure 3.
FIG. 1... Cover, 2... Cylindrical part, 3... Cap, 4
...Closing member, 11...High frequency lighting circuit component, 1
5...Bent fluorescent lamp, G...Center of gravity.

Claims (1)

[Claim for Utility Model Registration] A cover with a circular cross section houses lighting circuit components attached to a circuit board, and a power supply member is attached to one end of the cover, and a bent fluorescent lamp is attached to the other end of the cover. In a fluorescent lamp device to which a cover plate to which is fixed is attached, the lighting circuit components attached to the circuit board are arranged toward the power supply member, and the center of gravity of the entire device is located at the maximum diameter of the cover. A fluorescent lamp device characterized in that the fluorescent lamp device is located closer to the lamp than the lamp tip and is supported by the mounting surface at any part closer to the power supply member than the tip end of the lamp and the center of gravity.