JPS6336563Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a fluorescent lamp device that can be used in place of an incandescent light bulb and can save power.

[Technical background of the invention and its problems]

Fluorescent lamps have better light efficiency than regular incandescent light bulbs and can be used with low power consumption, so recently fluorescent lamps have been fitted with screw-in caps such as the E26 type commonly used in general incandescent light bulbs, and ballasts have been added to fluorescent lamps. , devices have been developed that incorporate lighting circuits and the like to achieve compatibility with general incandescent light bulbs.
In this device, a light-diffusing globe is placed on a base to which a cap is attached, and the center of a straight bulb is bent into a substantially U-shape within a space surrounded by the globe and the base. It has a structure that integrally accommodates a so-called saddle-shaped curved tube valve whose both ends are curved in a substantially U-shape in a direction substantially perpendicular to the plane containing the above-mentioned U-shape, a ballast, a lighting tube, etc. There is.

By the way, this type of device is mainly intended to be used as an alternative to the commonly used incandescent light bulb, so in order to create a feeling of resemblance to an incandescent light bulb, the globe that is the light emitting surface should be made in the same way as the light bulb. It is desirable that it be made of glass.

However, when the globe is made of glass, the above device also has a ballast for lighting the lamp built into the space surrounded by the base and the globe, so compared to conventional incandescent bulbs and fluorescent lamps, Therefore, if the globe corresponding to the bulb is made of glass, it will not be strong enough and will easily break. Furthermore, since the glass itself is relatively heavy, the presence of the ballast increases the weight of the device, which is already heavy.

Therefore, it is conceivable to make the glove made of synthetic resin. In this case, although synthetic resin materials have already been used for the shades of general lighting equipment, it is sufficient for the shades to have the function of diffusing the light from the lamp, so it is simply a matter of light transmittance and cost. The material was determined by considering only the surface.
However, since the above device is mainly intended to be used as a replacement for incandescent light bulbs, it is not enough to simply have good light transmittance; one of the important issues is how to make the appearance of the globe similar to a light bulb. It's becoming one.

[Purpose of invention]

The present invention was developed based on these circumstances, and it is possible to make the globe that serves as the light emitting surface similar to the bulb of a conventional general incandescent light bulb, and to create a fluorescent lamp device that is convenient for use as a replacement for incandescent light bulbs. For the purpose of providing.

[Summary of the idea]

That is, in order to achieve the above purpose, the present invention
As a result of various studies on synthetic resin materials for globes, we found that the surface light selection is as good as that of incandescent light bulbs, and the light refractive index is close to that of soda glass and borosilicate glass used for light bulbs. It is characterized by the use of acrylic resin.

[Example of idea]

Hereinafter, the present invention will be explained based on an embodiment shown in the drawings.

In the figure, 1 is a chassis made of, for example, a heat-resistant synthetic resin material. This chassis 1 is constructed by integrally protruding, for example, a cylindrical cylindrical part 3 at the center of a disc-shaped mounting plate 2.
A threaded portion 4 for attaching a cap is provided on the outer peripheral surface of the distal end side. Then, two parts of this threaded part 4 facing each other
At these locations, mounting grooves 5, 5 are provided which are cut to a predetermined length along the axial direction, and one end of these mounting grooves 5, 5 is opened at the distal end edge of the cylindrical portion 3. A cap such as an E26 type cap, for example, is screwed into the threaded portion 4. A base 7 is attached to such a chassis 1. The base 7 is approximately bowl-shaped, and has two opposing opening edges at one end.
Support protrusions 8, 8 are protrudingly provided in the mounting grooves 5, 5 of the cylindrical portion 3, and are removably fitted into the mounting grooves 5, 5 through an opening at one end thereof. Therefore, this base 7 has supporting protrusions 8,8
is mounted on the cylindrical part 3 so as to fit into the mounting grooves 5, 5, and then the cap 6 is screwed onto the threaded part 4, and the opening edge of the cap 6 is attached to the circumferential surface of one end of the base 7 on the opening side. It is immovably fixed by being attached. With this fixation, the mounting plate 2 is attached to the base 7.
It enters into the base 7 at a position deviated from the other end opening by a predetermined distance toward the cap 6 side, and is positioned with its outer periphery in contact with the inner surface of the base 7, so as to partition the inside of the base 7 and the inside of the glove, which will be described later. It's summery. Note that a plurality of vent holes 9 are formed on the circumferential surface of the base 7 to allow communication between the inside and outside of the base 7.

A substantially hemispherical globe 10 is attached to the opening edge of the other end of the base 7. Synthetic resin material is used for the globe 10, and as a result of various studies on the material of the synthetic resin material in the present invention, acrylic resin is used, which has a surface gloss similar to that of ordinary light bulb bulbs. By mixing a finely powdered light diffusing material into this resin, the entire globe 10 is colored in a light diffusing white color. In this case, among acrylic resins, methacrylic resin in particular has an optical refractive index of 1.48~
It has a light refractive index of about 1.50, which is very close to the light refractive index of soda glass for incandescent lamps, which is 1.51, and the light refractive index of borosilicate glass, which is 1.48, and is therefore suitable as the resin material for the above-mentioned globe 10. Such a globe 10 is formed into a tube shape by heating and softening an acrylic resin mixed with a light diffusing material, and the tube is placed in a mold while it is still soft, and air is blown into the tube to expand it. , is formed into the above shape by bringing this outer surface into close contact with the inner surface of the mold, and has locking claws 11 integrally provided at multiple locations around the opening periphery of the base 7, corresponding to the opening periphery at the other end of the base 7. It is removably fixed to the base 7 by being locked to locking protrusions 12 provided therein.

On the other hand, a recess 13 that is recessed toward the cylindrical portion 3 is integrally provided in the center of the mounting plate 2, and a peripheral wall of the recess 13 located inside the base 7 has a
A plurality of communication ports 14 communicating with the inside of the base 7 are provided. A stabilizer 15 is attached to this recess 13. The stabilizer 15 is fixed such that, for example, the end on the side from which the conductive wire is led out enters the recess 13, and the remaining portion is present within the globe 10. In addition, the surface of the mounting plate 2 on the globe 10 side forms a light reflecting surface as a preferable example, and on this reflecting surface side, a curved pipe shape is positioned inside the globe 10 and surrounds the stabilizer 15. A fluorescent lamp 16 is attached. The bulb 17 of this curved tube-shaped fluorescent lamp 16 is curved as follows. That is, a straight glass bulb is bent at the center into a substantially U-shape to form a bent part 17a, and both ends of the bent part 17a are bent into a substantially U-shape at the center thereof.
It is curved in a substantially U-shape in a direction substantially perpendicular to the plane containing the shape, and is called a saddle-shaped bulb because its overall shape resembles a saddle for horseback riding.
Electrode filaments 18, 18 are fixed to both ends of such a bent tube-shaped bulb 17, respectively, and the bulb 17 is fixed in a posture with the bent portion 17a and both ends facing toward the mounting plate 2. .

A phosphor film is coated on the inner surface of the bulb 17, and a predetermined amount of mercury and an inert gas are sealed inside. It goes without saying that the electrode filaments 18, 18 are connected to the cap 6 via the ballast 15 and a lighting tube (not shown).

Therefore, in the fluorescent lamp device having such a configuration, when the cap 6 is screwed into the socket on the lighting equipment side and the fluorescent lamp 16 is turned on, the light from the fluorescent lamp 16 passes through the globe 10 and is emitted to the outside. The entire surface of the globe 10 serves as a light emitting surface. In this case, since acrylic resin was used as the synthetic resin material for the globe 10, it has a good surface gloss and is similar to a general light bulb bulb, and the optical refractive index of this acrylic resin and the glass material of the bulb bulb is extremely high. Since it is approximated, Grove 1
The appearance and texture of 0 can be made closer to that of an incandescent light bulb. Therefore, there is no discomfort when replacing an existing incandescent light bulb, which is convenient for use as a replacement for light bulbs.

In addition, in the device with the above configuration, since the long curved tube bulb 17 is housed in a limited space inside the globe 10, the fluorescent lamp 16 and the globe 10 are very close to each other, which means that the bulb 17 can be used for a long period of time. If the glove 10 is used for a long time, the ultraviolet rays emitted from the fluorescent lamp 16 may cause the glove 10 to deteriorate or discolor. However, since the acrylic resin used as the synthetic resin material for the globe 10 has excellent durability against ultraviolet rays, it is possible to prevent the above-mentioned deterioration and discoloration of the globe 10 and maintain a good light-emitting surface over a long period of time. I can do it.

Furthermore, if both the base 7 and the glove 10 are made of synthetic resin, a fitting structure using a convex part and a concave part can be adopted as a means for connecting these two parts, which reduces the assembly work of the device compared to the case where screws or adhesives are used. It has the advantage of being easy to do.

In the above embodiment, the fluorescent lamp and ballast were fixed on the mounting plate that partitions the base side and the glove side, but this mounting plate is not necessarily necessary, and the point is that the fluorescent lamp and ballast are It suffices if both of them are housed in a space surrounded by the base and the glove.

[Effect of idea]

According to the present invention described in detail above, since the globe serving as the light emitting surface is made of acrylic resin, the surface has good gloss and is similar to a general light bulb.
Since the optical refractive index of this acrylic resin and the glass material for the bulb are extremely similar, the appearance and texture of the globe can be made to closely resemble the bulb of an incandescent light bulb. Therefore, there is no risk of causing discomfort even when used in place of an existing incandescent light bulb, and there is an advantage that it is convenient for use as a substitute for incandescent light bulbs. Acrylic also has sufficient resistance to ultraviolet rays emitted from fluorescent lamps, making it suitable as a material for the globe of this type of fluorescent lamp device.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIGS. 1 and 2 are sectional views viewed from different directions. 6...Base, 7...Base, 10...Glove, 17...Bent pipe valve, 18...Electrode.

Claims (1)

[Scope of utility model registration request] A base having a cap, a globe capped on the base, and a straight tube-shaped bulb, which is housed in a space surrounded by the base and the globe, and has electrodes at both ends, is arranged in a substantially U-shape at its center. A bent tube-shaped bulb having both ends curved in a substantially U-shape in a direction substantially perpendicular to a plane including the U-shape, and the space for lighting the bent tube-shaped bulb. 1. A fluorescent lamp device, comprising: a ballast housed in a ballast, and wherein the globe is made of acrylic resin.