Patent Application
20110044040
The present invention generally relates to a lighting device and a manufacturing method thereof, and more particularly to a manufacturing method or a structure of a lighting device that comprises a printed circuit board on which a plurality of electrical connection units is mounted to respectively connect a plurality of illuminant units in a non-destructive manner so as to safely install the illuminant units on the printed circuit board.
However, directly soldering the light-emitting diodes 5 to the printed circuit board may have the illuminant units directly contacting solders when the electrical terminals of the light-emitting diodes 5 are subjected to reflowing, leading to damage to plastic parts of the illuminant units due to excessively high temperature, severe environment in the reflowing oven, noise induced in the surroundings, electrostatic interference, and soldering flux and also damage caused by high temperature, temperature difference, and static electricity induced by soldering irons that are used for finishing of soldered surfaces after the reflowing process.
An objective of the present invention is to provide a lighting device, which comprises a printed circuit board defining a plurality of holes to which a plurality of electrical connection units is respectively mounted for connection with a plurality of illuminant units.
Another objective of the present invention is to provide a lighting device, which comprises a plurality of protector units arranged to encompass a plurality of electrical connection units to isolate electrical coupling between the electrical connection units.
A further objective of the present invention is to provide a manufacturing method of a lighting device, which comprises a step of forming a plurality of electrical connection units on a printed circuit board for installation of a plurality of illuminant units.
To achieve the above objectives, in accordance with the present invention, a lighting device is provided, comprising a printed circuit board, a plurality of electrical connection units, and a plurality of illuminant units. The printed circuit board has a layer of insulation and a layer of circuit. The insulation layer forms a plurality of holes corresponding to a plurality of electrically conductive zones of the circuit layer. The electrical connection units are connected to the electrically conductive zones through the holes. The illuminant units are set in electrical connection with the electrical connection units. The electrical connection units are fixedly mounted to the circuit layer and electrical power is supplied through the electrically conductive zones to the illuminant units. The electrical connection units are arranged in an array on the printed circuit board.
To further achieve the above objectives, the present invention provides a method for manufacturing a lighting device, comprising the following steps: (i) providing a substrate; (ii) laying a plurality of electrically conductive zones on the substrate to form a circuit layer; (iii) forming a layer of insulation on the circuit layer; (iv) forming a plurality of holes in the insulation layer to correspond to the electrically conductive zones; (v) setting a plurality of electrical connection units in the holes to be in electrical connection with the electrically conductive zones; and (vi) electrically connecting a plurality of illuminant units to the electrical connection units.
The foregoing objectives and summary provide only a brief introduction to the present invention. To fully appreciate these and other objects of the present invention as well as the invention itself, all of which will become apparent to those skilled in the art, the following detailed description of the invention and the claims should be read in conjunction with the accompanying drawings. Throughout the specification and drawings identical reference numerals refer to identical or similar parts.
Many other advantages and features of the present invention will become manifest to those versed in the art upon making reference to the detailed description and the accompanying sheets of drawings in which a preferred structural embodiment incorporating the principles of the present invention is shown by way of illustrative example.
The following descriptions are exemplary embodiments only, and are not intended to limit the scope, applicability or configuration of the invention in any way. Rather, the following description provides a convenient illustration for implementing exemplary embodiments of the invention. Various changes to the described embodiments may be made in the function and arrangement of the elements described without departing from the scope of the invention as set forth in the appended claims.
Referring to
Referring to
It is noted that the lighting device 3 may further comprise a protector unit 42, which encompasses each of the two illuminant connection terminals 342 of the electrical connection unit 34, as shown in
Referring to
As described above, the present invention, when put into practice, offers the following advantage:
The present invention provides a method for manufacturing a lighting device, which, when subjected to reflowing, can prevent the illuminant unit from directly contacting the molten solder and thus eliminates potential risks of damages caused to plastic parts of the illuminant unit due to excessively high temperature, severe environment in the reflowing oven, noise induced in the surroundings, electrostatic interference, and soldering flux and also damages caused by high temperature, temperature difference, and static electricity induced by soldering irons that are used for finishing of soldered surfaces after the reflowing process.
While certain novel features of this invention have been shown and described and are pointed out in the annexed claim, it is not intended to be limited to the details above, since it will be understood that various omissions, modifications, substitutions and changes in the forms and details of the device illustrated and in its operation can be made by those skilled in the art without departing in any way from the spirit of the present invention.
