Patent Application
20100188339
(a) Field of the Invention
The creation relates to alight-emitting device improvement for a keyboard, and aims to provide a light-emitting device for a keyboard, in which the material costs can be significantly lowered and the light emitting diodes (LEDs) or circuits can be renewed or replaced as long as the flexible carrier plates for loading said LEDs are replaced.
(b) Description of the Prior Art
It is learned that blue light computer keyboards became popular since 2005. Light-emitting devices with light emitting diodes (LEDs) are built in keyboards, such that players can view the position of keys clearly in a dark environment and the attraction of such keyboards would be increased. Whereupon, the function of enhancing the game's effects can also be achieved, such keyboards can be applied to business computers for presentation, various engineering computers and military computers for operation in a low-light level, even a lightless environment.
However, for the purpose of satisfying the convenience of actual operation, the keys 10 of a general keyboard are disposed over a wide range and therearound provided with some equipment like a power button, a mouse pad, speakers, warning lamps, and so forth. As a result, the entire area of a single flexible printed circuit board 30 must cover the range of the peripheral equipment of the keys 10 to electrically and reliably connect said equipment. This can result in extremely high material costs. Meanwhile, when the light emitting diodes (LEDs) 40 or circuits on the flexible circuit board break down, it is impossible to simply replace the faulted parts of the whole. All of the flexible printed circuit board 30 together with the light emitting diodes (LEDs) 40 needs to be replaced. Therefore, the costs of maintenance and production are relatively high while today's environmental demands cannot be met.
In view of the above-mentioned problems, the creation has been made to improve a light-emitting device for a luminous keyboard and has an object to provide a light-emitting device for a keyboard, in which the material costs can be significantly lowered and the light emitting diodes (LEDs) or circuits can be renewed or replaced as long as the flexible carrier plates for loading said LEDs are replaced.
To achieve the foregoing objectives, the entire light-emitting device mainly comprises a light guide plate and at least one flexible carrier plates disposed below the light guide plate; wherein each of said flexible carrier plate has a supporting portion equipped with a plurality of light emitting diodes (LEDs), and a wire for electrically connecting each of the light emitting diodes (LEDs) and the control terminal of the keyboard. Thus, the area of a single flexible carrier plate can be effectively reduced and the material costs can be significantly lowered. In particular, when the light emitting diodes (LEDs) or circuits break down, they can be renewed or replaced as long as the flexible carrier plates for loading said LEDs are replaced.
Specifically, the light-emitting device for a keyboard according to the creation has the following effects:
1. The area of a single flexible carrier plate can be effectively reduced and the undesired connecting regions between the flexible carrier plates can also be saved, thereby significantly lowering the material costs.
2. The light emitting diodes (LEDs) or circuits can be renewed or replaced as long as the flexible carrier plates for loading said LEDs are replaced instead of replacing all of the flexible carrier plates together with the light emitting diodes (LEDs). The costs of maintenance and production can be reduced while still meeting today's environmental demands.
As illustrated in
Wherein the light guide plate 20 is correspondingly disposed below the keys 10 of the keyboard; the flexible carrier plate 50 is disposed at a specific position below the light guide plate 20, and said flexible carrier plate 50 has a supporting portion 51 equipped with a plurality of light emitting diodes (LEDs) 40, and a wire 52 for electrically connecting each of the light emitting diodes (LEDs) 40 and the control terminal of the keyboard (not shown). The wire 52 can be a flexible flat cable (FFC), a coaxial line, or an electronic wire, or the like.
Accordingly, all the light emitting diodes (LEDs) 40 in the entire light-emitting device are correspondingly arranged below the keys 10 through the flexible carrier plate 50. When the light emitting diodes (LEDs) 40 emit light, it will be diffused by the light guide plate 20 to obtain the entire luminescence of the region of the keys 10 of the keyboard.
Furthermore, as illustrated in
Accordingly, all the light emitting diodes (LEDs) 40 in the entire light-emitting device are correspondingly arranged below the keys 10 through each of the flexible carrier plates 50. When the light emitting diodes (LEDs) 40 emit light, it will be diffused by the light guide plate 20 to obtain the entire luminescence of the region of the keys 10 of the keyboard.
It should be noted that in this embodiment, the arrangement of all the light emitting diodes (LEDs) is achieved by the plurality of flexible carrier plates disposed at the specific position. Therefore, the light emitting diodes with different luminous effects can be arranged with respect to the keys 10 located at the different locations, thereby enhancing the variability of the entire light-emitting device.
Above all, the area of the flexible carrier plates can be effectively reduced and the undesired connecting regions between the flexible carrier plates can also be saved, thereby significantly lowering the material costs. It is more obvious when the flexible carrier plates are made of flexible printed circuit boards. Moreover, the light emitting diodes (LEDs) or circuits can be renewed or replaced as long as the flexible carrier plates for loading said LEDs are replaced instead of replacing all of the flexible carrier plates together with the light emitting diodes (LEDs). The costs of maintenance and production can be reduced while still meeting today's environmental demands.
In view of the aforementioned, the creation provides an improved light-emitting device for a keyboard, and the application for a patent is duly filed accordingly. The technical contents and features of the creation are disclosed above. However, anyone familiar with the technique could possibly make modify or change the details in accordance with the creation without departing from the technologic ideas and spirit of the creation. The protection scope of the creation shall not be limited to what embodiment discloses, and should include various modification and changes that are made without departing from the technologic ideas and spirit of the creation, and should be covered by the claims mentioned below.
