Patent TW-200716951-A (TW)
Title: Photoelectric-bubble panel lighting level
Inventor: CHEN ZHI-XIAN
IPC: G01C9/24
Filed: 2005-10-31
Abstract: This invention provides an assembly apparatus of photoelectric-bubble panel lighting level. It comprises a level device, an light emitter, an assembly of a casing panel body, and a fixing chase within a transparent casing for inserting the light emitter. The level device of the photoelectric-bubble level is a transparent hollow sealed casing panel body filled with alcohol. In order to make the level device possess lighting function, the casing builds two spaces. The first space of the casing is utilized as an external casing portion of the level device with a groove hole. Screw or bolt structures are built on wall of the groove hole for inserting and fixing the light emitter. It fixes and combines the level device and the optical emitter into an integrated configuration. The light emitter is capable of receiving input current from a connected external power supply, it generates a proper light source to make the level device capable of lighting when triggered by the current. While the conventional level only emits light spot, however the photoelectric-bubble level casing panel of the invention is equipped with an additional casing panel utilized as the fixing chase within the transparent casing panel body for housing the light emitter. The casing includes a fixing chase, namely the second space, for inserting the level device capable of lighting. A fixing groove hole is allocated on the additional casing for fixing the inserted light emitter. With the above configuration, the light emitters respectively built in the first space and the second space can receive input current from the connected external power supply, thereby generating light source when triggered by the current. Unlike conventional level that only emits light in a limited and fixed range, category of light patterns of the present photoelectric-bubble panel lighting level is expanded by equipping with the additional transparent casing panel body, not only enlarging the illumination range but also allowing different light patterns such as spot, strip, plane, and facade. Different product forms of the photoelectric-bubble panel lighting level of the invention can be provided to meet different businesses needs in installing at plural different measuring carrier platforms, either in a complete assembly or in single separate unit. Or, a conventional level device can be properly installed in the fixing chase within the transparent casing panel body for inserting the light emitter to readily make the conventional level device capable of lighting. The aforementioned photoelectric-bubble panel lighting level can be utilized as conventional levels in working environments under sufficient illumination. When illumination is insufficient and users immediately requires illumination enhancement for measuring, the light emitter of the photoelectric-bubble panel lighting level can receive power from the connected external power supply, so as to emit light source to a casing socket of the photoelectric-bubble panel lighting level. Therefore, it makes incident light and refracted light interlace to generate illuminating field of view that allows users to clearly observe floating and moving directions of a lighting bubble inside the photoelectric-bubble panel lighting level in order to adjust measuring tools to operate horizontal or vertical measurement processes. Thus, it makes level tools independently emit light sources to form a proper light field without restraints from working environments that lacks sufficient illumination. Eventually, it eliminates the inconvenience of dependency on natural light in the conventional levels.