RU2471224C2 - Multi-symbol keyboard with lighting - Google Patents

Abstract

FIELD: information technologies.

SUBSTANCE: in a multi-symbol keyboard with lighting, in the body of which there are buttons arranged with appropriate mechanisms of their displacement and switching, connected with a control circuit, switching also light radiators arranged under each button, light from which via a replaceable film with several images of symbols under each button gets onto its surface, light radiators are arranged so that whenever one of them is switched on, the appropriate image of the symbol is projected to entire semitransparent upper surface of the button, and whenever another one is switched on - another appropriate image replaces the previous one on the same entire surface of the button.

EFFECT: development of a keyboard, on the entire surface of a key of which one full-size symbol is displayed from a large set of symbols with even lighting along the entire surface of the symbol, besides, the film with a set of symbols may be easily replaced to another one.

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Description

The invention relates to electronics, to computer technology and can be used as part of information input devices.

Known computer keyboard (1), which is a set of keys containing elements with changing characters on their surface. The disadvantages of the known keyboard are the complexity, high cost of the key itself and the lack of reliability of the entire keyboard. Known buttons and keyboards (2), (3), (4), using special filters to obtain images on the surface of the keys. The disadvantages of the known devices are the limited number of reproducible characters on each surface of the key and the heterogeneity of the glow of the character due to the overlay of images of characters. A keyboard with transparent key panels (5) is also known, using a replaceable character set on the film. The disadvantage of the keyboard is the limited character set on each key.

The closest in technical essence to the claimed multi-character keyboard with backlight is a luminous keyboard with a multi-character selection (6) selected as a prototype, containing transparent keys with colored symbols on the film. The keys are equipped with internal illumination of each of the characters located on it individually. The backlight is made in the form of a film with placed LEDs, separate for each symbol. In this case, the internal key cavity is made divided by partitions into parts, and an LED is placed in each of the formed cavities.

The disadvantages of the known device for entering information are a limited number of characters on the surface of the keys and their small size.

An object of the present invention is to provide a keyboard, on the entire surface of the key of which one full-size character is displayed from a large set of characters with uniform illumination over the entire surface of the character, and the film with the character set can be easily replaced with another.

The problem is solved due to the fact that in the multi-character keyboard with backlight, in the case of which there are buttons with the corresponding mechanisms for their movement and switching, connected to the control circuit, switching including light emitters located under each button, the light from which through a removable film with several symbol images under each button fall onto its surface, the light emitters are located so that when one of them is turned on, the corresponding symbol image is projected over the entire the translucent upper surface of the button, and when you turn on another, another corresponding image replaces the previous one on the same entire surface of the button.

The claimed multi-character keyboard with backlight is illustrated by drawings, where:

figure 1 is a side view of the keyboard in section;

figure 2 is a top view of the keyboard in section;

figure 3 is a view of a button in a perspective view.

Concrete implementation example

The claimed multi-character keyboard with backlight (Fig. 1) (examined by the example of a membrane keyboard with rubber caps to return to its original position) is a housing 1, in which there are buttons 2 with the corresponding mechanisms for moving them 3 (made in the form of a rubber layer of caps) and switching 4, connected to the control circuit 5 of the conductive tracks 6. The control circuit 5 switches the light emitters 7 (for example, LEDs) located under each button 2, the light from which through a removable film 8 with several symbol images under each button, it falls onto its surface, and the light emitters are arranged so that when one of them is turned on, the corresponding symbol image is projected onto the entire translucent upper surface of button 2, and when another is turned on, another corresponding image replaces the previous one on the same entire surface of the button 2. A multi-character backlit keyboard can be implemented on other principles of movement and switching mechanisms. Films with character sets can be embedded in each key if necessary to simplify the design.

A multi-character backlit keyboard operates as follows.

The design of the housing 1 ensures the placement of the buttons 2 with the corresponding mechanisms of their movement 3 and switching 4 connected to the control circuit 5 of the conductive tracks 6. The control circuit 5, in accordance with the selected character set layout, commutes the corresponding light emitters 7 located under each button 2, so that when you turn on one of them, the corresponding image of the symbol is projected onto the entire translucent upper surface of the button 2, and when you turn on the other, the other corresponding image is replaced t previous on the same entire surface of button 2.

Thus, the proposed technical solution for a multi-character keyboard with backlight when changing the location of the light emitters of the design provides a larger display of characters and their location on the entire surface of the key with a huge selection of characters for each key (from two to several hundred). At the same time, the design of the multi-character keyboard with backlighting can significantly simplify the assembly during production and change the film with a set of characters to another set that meets the user's desire; makes it possible to complete the keyboard with several spare buttons for repair, as most buttons are completely identical in design and uncritical to abrasion of the outer surface.

Information sources

1. Patent of the Russian Federation for utility model No. 76477.

2. German patent DE 3235752 A1.

3. Japan Patent JP 2009181413.

4. China Patent CN 101055496 A.

5. PCT International Application WO 2010/030279 A1.

6. Korean patent KR 10-2009-0066364.

Claims (1)

A multi-character keyboard with backlight, in the case of which there are buttons with corresponding mechanisms for their movement and switching, connected to a control circuit that commutes, including light emitters located under each button, the light from which passes through a removable film with several symbol images under each button its surface, characterized in that the light emitters are arranged so that when one of them is turned on, the corresponding symbol image is projected onto the entire translucent upper button surface, and when the other - more appropriate image replaces the previous on the same button, the entire surface.

Images