CN201191571Y

CN201191571Y - Light conducting board for mobile phone press-key

Info

Publication number: CN201191571Y
Application number: CNU2008201070105U
Authority: CN
Inventors: 蒋慧鸿
Original assignee: JIAXING CHUNXIANG ELECTRONICS TECHNOLOGY Co Ltd
Current assignee: JIAXING CHUNXIANG ELECTRONICS TECHNOLOGY Co Ltd
Priority date: 2008-04-11
Filing date: 2008-04-11
Publication date: 2009-02-04
Anticipated expiration: 2018-04-11

Abstract

The utility model relates to a light guide plate of a mobile phone key, which is characterized by comprising a plate body, light guide points are printed on the bottom surface of the plate body, and the light guide points are point-like projections which are formed by light guide printing ink. The plate body is an optical grade polyurethane plate body. A light guide plate is mounted in a mobile phone module group, which can reflect and diffuse parallel rays emitted by an LED light through light guide points which are arranged on the light guide plate and have high reflectance factor and do not absorb lights, and the parallel rays are evenly illuminated on a keyboard, thereby reaching the function of lighting the keyboard, reaching the application effect under the circumstance with little amount of LED lights, namely having excellent luminance and uniformity. The reduction of LED lights in a luminous device can reduce the consumption of power, thereby prolonging the using time of batteries, increasing work time of mobile phones, and simultaneously lowering production cost.

Description

Mobile phone press key light guide plate

Affiliated technical field

The utility model relates to a kind of Cellphone Accessories, particularly as the mobile phone press key light guide plate of lighting device.

Background technology

The light guide plate technology is a 21 century a kind of new high-tech product newly developed, its technology derives from the backlight technology of liquid crystal display, utilization optical refraction principle, linear light is converted to planar light source, thereby reach the bright even effect of whole area source, become a kind of new trend of advertising, decoration adnornment industry, frame picture frame industry, the development of label sign industry.And light guide plate also is widely used in communication apparatus, computer and the remote control equipment at present.

In mobile phones design, distinguish each function key of mobile phone and shown content for making it at night and dark place, lighting device need be installed.

Existing mobile phone module, as shown in Figure 1, LED lamp 2, switch 3 and sheet metal 4 are installed on the pcb board 1, and order is equipped with guide pillar 6 and button 7 above sheet metal 4.When the user pushes button 7 the time, make it to contact by guide pillar 6 and sheet metal 4 with switch 3 on the pcb board 1, circuit turn-on produces signal, LED lamp 2 starters, its irradiation light of sending is directly thrown light on to button 7 in the mode of point.Employing is thrown light on to button in the mode of point, then needs to use a large amount of LED lamps to be evenly distributed on each orientation of keyboard, could guarantee that keyboard is luminous even and briliancy is high everywhere, and common LED lantern festival is used 6-8.But LED lamp usage quantity is too much, thereby can consume the operating time that lot of energy has reduced battery greatly because of needs, causes the cell phone standby time short, and LED lamp usage quantity too much also can increase production cost simultaneously.

Description

The utility model provides a kind of mobile phone press key light guide plate, and purpose is to solve the prior art problem, provides a kind of and only uses a small amount of LED lamp that good briliancy and uniformity can be arranged, and cuts down the consumption of energy simultaneously, the lighting device that prolong battery service time, reduces cost.

The utility model technical scheme that adopts of dealing with problems is:

Mobile phone press key light guide plate is characterized in that: comprise plate body, the plate body bottom surface is printed on the point-like projection that leaded light point leaded light point constitutes for light guide ink.

Described plate body is an optical grade polyurethane plate body.

The beneficial effects of the utility model: light guide plate is installed in mobile phone module, can be by having the high reflectance and the leaded light point of extinction not on the light guide plate, the parallel rays reflection that the LED lamp sends is spread, shine on the keyboard uniformly, thereby reach the effect of illuminating keyboard, can can reach result of use having only under a small amount of LED lamp situation, good briliancy and uniformity are promptly arranged.Thereby the minimizing of LED lamp not only can reduce the service time of the consumption prolongation battery of energy in the lighting device, increases the cell phone standby time, can also reduce production costs simultaneously.

Description of drawings

Fig. 1 is existing mobile phone module structure chart;

Fig. 2 is the mobile phone module structure chart that light guide plate is housed;

Fig. 3 is the light guide plate front schematic view;

Fig. 4 is the bottom surface of light guide plate schematic diagram.

Embodiment

The utility model is described in further detail below in conjunction with embodiment.

Shown in Fig. 3,4, mobile phone press key light guide plate comprises plate body 8, and plate body 8 bottom surfaces are printed on leaded light point 90.Described plate body 8 is an optical grade polyurethane plate body, and leaded light point 90 is the point-like projection that light guide ink constitutes, and is printed on the bottom surface of plate body 8 with screen printing technology.

Only adopt 2 LED lamps in the present embodiment.

Shown in Fig. 2,3,4, LED lamp 2 and sheet metal 4 are installed on the pcb board 1, and order is equipped with light guide plate 5, guide pillar 6 and button 7 above sheet metal 4, and LED lamp 2 is positioned at the side of light guide plate 5.Because the utility model is the printing light guide plate, must be printed on character pattern on the described button 7, its objective is that the light source that will be installed in the side is that the light that LED lamp 2 is emitted is propagated uniformly, and the character pattern on the button 7 must be corresponding one by one with each zone of the luminous point on the light guide plate 59.When the user pushes button 7 the time, by contacting with switch 3 on the pcb board 1, circuit turn-on produces signal, LED lamp 2 starters.By having on the light guide plate 5 by high reflectance and the leaded light point 90 that constitutes of the light guide ink of extinction not, the parallel rays reflection that LED lamp 2 sends is spread, shine on the keyboard uniformly, thereby reach the effect of illuminating keyboard, can can reach result of use having only under a small amount of LED lamp 2 situations, good briliancy and uniformity are promptly arranged.Thereby the minimizing of LED lamp 2 not only can reduce the service time of the consumption prolongation battery of energy in the lighting device, increases the cell phone standby time, can also reduce production costs simultaneously.

Claims

1 mobile phone press key light guide plate is characterized in that: comprise plate body, the plate body bottom surface is printed on the leaded light point, the point-like projection that leaded light point constitutes for light guide ink.

2. mobile phone press key light guide plate according to claim 1, it is characterized in that: described plate body is an optical grade polyurethane plate body.