Patent ID: 8292444

Claim:
An uniformly self-luminous keyboard device comprising: a housing including an upper casing and a lower casing, wherein said upper casing and said lower casing can be assembled together to form an accommodation space therebetween, and said upper casing has an opening interconnecting said accommodation space; and a keyboard unit arranged in said accommodation space and including a plurality of press members passing through said opening and a baseplate supporting said press members, wherein said press member is moved by a force to have a displacement, and wherein said baseplate and said lower casing define a light conduction space under the plurality of press members, and a light emitting unit is arranged inside said light conduction space, the light conduction space including a first end and a second end respectively corresponding to two opposite edges of the baseplate, a plurality of press members being located above the light conduction space along the length of the space from the first end to the second end and the light emitting unit providing light distributed over said light conduction space, and height of said light conduction space decreases continuously from the first end to the second end thereof along one direction away from said light emitting unit.