Information display module
An information display module comprises a liquid display module sandwiched between a back lens module and a transparent front window module, said front window module comprising a main body part and at least one light guide for conducting light from an LED, said light guide and main body part of the front window module being formed integrally with one another and interconnected by a connecting section which defines a tortuous light transmission path whereby a transmission of light from the LED light guide to the main body part of the window module is suppressed.
1 . An information display module comprising a liquid display module sandwiched between a back lens module and a transparent front window module, said front window module comprising a main body part and at least one light guide for conducting light from an LED, said light guide and main body part of the front window module being formed integrally with one another and interconnected by a connecting section which defines a tortuous light transmission path whereby a transmission of light from the LED light guide to the main body part of the window module is suppressed.
2 . An information display module in accordance with claim 1 , wherein the connecting section comprises a plurality of right angled bends between the light guide and the window module main body.
3 . An information display module in accordance with claim 2 , wherein the connecting section comprises at least four right angled bends between the light guide and the window module main body.
4 . An information display module in accordance with claim 1 , wherein the connecting section comprises a path of non-linear or convoluted shape.
5 . An information display module in accordance with claim 1 , wherein the main window part, connecting section and said light guide are formed integrally from the same light conducting material.
6 . An information display module in accordance with claim 1 , wherein the window module has a substantially flat rectangular shape and is provided with two light guides, one at each of two opposing sides of the rectangular window module.
7 . An information display module in accordance with claim 1 , wherein the light guide comprises an inner end of non-planar shape for receiving light from an LED.
8 . An information display module in accordance with claim 7 , wherein said inner end is of a convex shape.
9 . An information display module comprising a liquid display module positioned between a back lens module and a transparent front window module, said back lens module comprising a main body part and an input lens projection formed integrally with said main body part, said input lens projection providing a light transmission path between an input end of the input lens projection and said main body part, and said input lens projection being configured to cause a change in the direction of transmission of light between the input end of the lens projection and said main body part of the back lens module.
10 . An information display module in accordance with claim 9 , wherein the input lens projection is configured to bend light through an angle substantially equal to ninety degrees.
11 . An information display module in accordance with claim 9 , wherein the back lens module has a substantially flat rectangular shape and two input lens projections are provided one at each of the opposite shorter sides of the back lens module.
12 . An information display module comprising a location element for securing the module to a printed circuit board, and a liquid crystal display module securable at least in part relative to said location element, said information display module comprising biasing means to act on the liquid display module and bias said liquid display module towards a datum position defined by the location element.
13 . An information display module in accordance with claim 12 , wherein the location element is defined by a transparent window module beneath which the liquid crystal display module is located.
14 . An information display module in accordance with claim 12 , wherein the location element is defined by a back lens module over which the liquid crystal display module is located.
15 . An information display module in accordance with claim 12 , wherein the biasing means comprises a finger shaped projection.
16 . An information display module in accordance with claim 12 , wherein the biasing means is integrally formed with the location element.
17 . An information display module in accordance with claim 12 , wherein the information display module comprises a front window module of a rectangular shape and an integrally formed biasing means is provided on one of the two shorter sides of said front window module.