JPS6233204Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field] The present invention relates to lighting devices, and in particular, to light bulb cap type lighting devices in which a curved tube fluorescent lamp and its lighting circuit components are housed in a globe equipped with a bulb cap. This invention relates to a globe structure in which shadows are difficult to be projected.

[Background technology]

In general, this type of lighting device consists of a first globe with a light bulb base (Edison base) attached to a second globe, a nearly spherical globe, a ballast, circuit parts such as a glow lamp, and a U-shaped, double-walled globe. A curved tube-shaped fluorescent lamp, such as a U-shape, is housed so that the circuit components are mainly located on the first glove side, and the curved tube-shaped fluorescent lamp is mainly located on the second glove side.

By the way, this lighting device includes () one in which the first globe is made of a metal member and a second globe made of glass or resin material () one in which both the first and second globes are made of resin material. There is.

In the lighting device shown in parentheses, the first globe is made of a non-transparent metal member, so the shadows of the circuit components are not projected onto the first globe during lighting operation, but the upper part of the globe is Since the light distribution to the area is significantly suppressed, the brightness of the illuminated space becomes extremely unbalanced, which is undesirable.

In the lighting device in parentheses, both the first and second globes are made of translucent resin, so although there is no extreme imbalance in the brightness of the lighting space, the shadows of the circuit components are Since the image is projected onto the glove of No. 1, there is a problem in that the product quality is impaired.

However, in recent years, there has been a desire to improve the quality of illumination in illuminated spaces, and although the lighting devices in () are becoming widespread, from the viewpoint of marketability, the shadows that occur on the first globe disappear. Countermeasures have become an urgent issue.

[Disclosure of invention]

Therefore, an object of the present invention is to provide an illumination device with a simple configuration in which shadows of circuit components are unlikely to be projected onto the first globe.

The feature of the present invention is that the glove is equipped with a means for connecting to an AC power source, and a second glove having a transmittance of 80 to 98% is attached to a first glove having a transmittance of 50 to 85%. On the other hand, lighting circuit components and fluorescent lamps having an electrical connection relationship are housed so that the circuit components are mainly located on the first glove side and the fluorescent lamps are mainly located on the second glove side.

According to this invention, since the first glove is provided with an appropriate light transmittance, an appropriate amount of light can be transmitted upward. For this reason, the lighting balance of the lighting space can be maintained appropriately.

Moreover, since the transmittance of the first globe is set to 50 to 85%, preferably 70 to 85%, it is difficult for the shadows of circuit components to be projected onto the first globe, and even if they are projected, they will be blurred and emphasized. In some cases, the product may not be sold, and the product's marketability can be significantly improved.

Further, since the second globe has a transmittance set at 80 to 98%, preferably 85 to 95%, the light emitted from the fluorescent lamp can be effectively emitted to the outside.

In particular, if the first and second gloves are made of resin materials of the same color, it is possible to reduce the shadows in the luminance distribution on the glove surface in combination with the above-mentioned transmittance specification, and further improve the marketability. can.

However, if the transmittance of the first globe is less than 50%, the brightness of the surfaces of the first and second globes will feel extremely strange, and if it exceeds 85%, the shadows of the circuit components will be emphasized. This will seriously impair the product's marketability. Also, if the second globe has a transmittance of less than 80%, the light emitted from the fluorescent lamp will not be used effectively;
If it exceeds this value, circuit components and the like will be visible, and the brightness on the surfaces of the first and second gloves will give a sense of discomfort, which is undesirable. Therefore, it is not preferable to deviate from the respective transmittance ranges.

[Best form for implementing the idea]

Next, an example of application of the present invention to a light bulb cap lighting device will be described with reference to the drawings.

In the figure, 1 is a globe formed into a spherical shape from a resin material of the same color, such as acrylic resin or polycarbonate resin, and has a transmittance of 50 to 85.
% hemispherical first set preferably between 70 and 85%
Globe 2 with transmittance of 80-98% preferably 85
It is composed of a hemispherical second globe 3 set at ~95%. The first and second gloves 2 and 3 have a stepped part formed at their joint and are integrated using adhesive, but can be attached and detached using, for example, a screw mechanism, a snap mechanism, a fastener mechanism, etc. It can also be configured as A light bulb base (Edison base) 4 is provided on the top of the first globe 2 and serves as a connection means to a commercial AC power source. On the other hand, the globe 1 houses a lighting circuit component 5 such as a ballast and a glow lamp, and a double U-shaped fluorescent lamp 6. The circuit component 5 is mainly located on the first globe 2 side, and the fluorescent lamp 6 is It is mainly arranged on the second glove 3 side.

According to this embodiment, by emitting an appropriate amount of light from the first glove 2, the discomfort caused by the brightness of the first and second gloves 2 and 3 is eliminated, and
Projection of the shadow of the circuit component 5 onto the first globe 2 is also suppressed, and the marketability can be improved.

For example, in the above embodiment, when a milky white acrylic resin was used and the transmittances of the first and second gloves 2 and 3 were set to 80% and 95%, the same effects as in the above embodiment were obtained.

In addition, in the present invention, as the connection means of the first globe, in addition to a light bulb base, a hooking seal, a plug mechanism, etc. can also be applied. Furthermore, the globe can be changed into any other shape, such as elliptical or square, in addition to the spherical shape, and its color system can also be selected as appropriate. Also, the first
The second glove may have the same color system or may have a different color system.

[Brief explanation of the drawing]

The figure is a partially cutaway front view showing an embodiment of the present invention. In the figure, 1 is the glove, 2 is the first glove, 3
4 is a second globe, 4 is a connecting means, 5 is a circuit component, and 6 is a fluorescent lamp.

Claims (1)

[Scope of utility model registration request] A first globe having a transmission of 50 to 85% and having a connection means to an AC power supply and having a transmission of 80 to 98%.
A lighting circuit component and a fluorescent lamp having an electrical connection relationship with the connecting means are attached to the glove, with the circuit component mainly on the first glove side and the fluorescent lamp mainly on the second glove side. A lighting device characterized in that the lighting device is housed so as to be located on the glove side.