Light structure

A light includes a light-producing inner tube, and an outer tube positioned around the light-producing inner tube; the light-producing inner tube has electrical terminals at two ends thereof, which sticks out of the outer tube; the outer tube has a light reflecting film on an outer side of a first portion thereof; an inner side of the first portion of the outer tube is processed so as to have a rough and lumpy surface, which can cause light produce by the light-producing inner tube to travel in all directions; the outer tube has a fluorescent layer on each of inner and outer sides of a second portion thereof, which make the second portion of the outer tube more pervious to light.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a light structure, more particularly one, which includes a light-producing inner tube, and an outer tube including a first portion having a relatively good light reflectivity, and a second portion having relatively good perviousness to light.

2. Brief Description of the Prior Art

Early electric lights usually comprise bulbs with tungsten filaments, which are gradually replaced with fluorescent lights because energy source is getting more expensive, and fluorescent lights consume less electricity than bulbs with tungsten filaments. Such a fluorescent light includes a fluorescent lamp tube capable of producing light traveling in all directions, and an external device, which is used to hold the fluorescent lamp tube in position and electrically connect the fluorescent lamp tube to a power supply, and which can reflect light produced by the fluorescent lamp tube to the area to be lighted.

However, such a fluorescent light isn't bright enough because the external device doesn't have good light reflectivity, and there is a significant distance between the fluorescent lamp tube and the external device, which would cause reduction to the brightness.

SUMMARY OF THE INVENTION

It is a main object of the present invention to provide an improvement on a light structure to overcome the above problems.

A light structure according to an embodiment of the present invention includes a light-producing inner tube, and an outer tube positioned around the light-producing inner tube. The light-producing inner tube has electrical terminals at two ends thereof, which sticks out of the outer tube. The outer tube has a light reflecting film on an outer side of a first portion thereof, and an inner side of the first portion is processed so as to have a rough and lumpy surface, which can cause light produce by the light-producing inner tube to travel in all directions. The outer tube has fluorescent layers on both inner and outer sides of a second portion thereof, which can make the second portion of the outer tube more pervious to light.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Referring toFIG. 1toFIG. 3, a preferred embodiment of a light1of the present invention includes a light-producing inner tube11, and an outer tube12.

The light-producing inner tube11has electrical terminals111at two ends to be electrically connected to an external device in order for allowing the inner tube11to be powered and produce light.

The outer tube12is positioned around the light-producing inner tube11with the electrical terminals111of the light-producing inner tube11sticking out of two ends thereof. The outer tube12is made of a transparent material such as glass and quartz, and can be formed with a circular, olive-shaped, semicircular lateral or other-shaped section.

Furthermore, the outer tube12has a first portion having an outer side121and an inner side122; the outer side121of the first portion of the outer tube12has a light reflecting film2thereon for reflecting light produced by the light-producing inner tube11inwardly; the inner side122of the first portion of the outer tube12is processed in such a way as to have a rough and lumpy surface3, which can make light produced by the light-producing inner tube11travel in all directions. The outer tube12has a second portion, which faces the first portion of the outer tube12, and which has an outer side121, and an inner side122; each of both the outer and the inner sides121and122of the second portion of the outer tube12has a fluorescent layer4thereon for making the second portion of the outer tube12more pervious to light; thus, the light1is brighter; the fluorescent layers4can be stuck on the outer tube12or formed by means of a coating process.

Referring toFIGS. 1 and 6, the light1is connected to an external device at the electrical terminals111with the second portion of the outer tube12facing the area to be lighted up, which has the fluorescent layers4on both the inner and the outer sides122and121. Therefore, light produced by the light-producing inner tube11will be reflected by the light reflecting film2on the outer side121of the first portion of the outer tube12, and made to travel in all directions by means of the rough and lumpy surface3on the inner side of the first portion of the outer tube12, and travel out of the light1through the second portion of the outer tube12, which is highly pervious to light owing to the existence of the fluorescent layers4on both the inner and the outer sides122and121of the second portion of the outer tube12. Therefore, the light1is relatively bright.

From the above description, it can be seen that the light of the present invention has an advantage: because the first portion of the outer tube has the light reflecting film and the rough and lumpy surface, and the second portion of the outer tube has the fluorescent layers, the light has more brightness, thus producing better illuminating effect.