CN203165760U - Luminous computer keyboard membrane - Google Patents

Abstract

The utility model relates to a luminous computer keyboard membrane, comprising a keyboard membrane surface layer and a keyboard membrane lining combined with the keyboard membrane surface layer, between which a light-emitting circuit is arranged; the light-emitting circuit is formed by a plurality of LED lamp branches in parallel connection; LED lamps of each branch are in series connection; the light-emitting circuit is in connection with a power supply through a power supply joint. Wherein, the light-emitting circuit can be in series or parallel connection with a slide rheostat in order to adjust LED lamp brightness. The luminous computer keyboard membrane overcomes the disadvantage that a common keyboard membrane is inconvenient to use without lighting, can adjust brightness of a keyboard membrane in dependence on needs and directly use a computer to supply power and is safe and convenient to use.

Description

Luminous computer keyboard film

technical field

The utility model belongs to a keyboard membrane, in particular to a luminous computer keyboard membrane. the

Background technique

At present, the computer keyboards at home and abroad are relatively convenient to operate, and are suitable for use during the day, but in the absence of lighting, the use of the keyboard will cause great inconvenience because it cannot be seen clearly. the

Utility model content

Aiming at the deficiencies in the prior art, the utility model provides a luminous computer keyboard film. the

The luminous computer keyboard film described in the utility model comprises a keyboard film surface layer and a keyboard film inner layer compounded with the keyboard film surface layer, a light-emitting circuit is arranged between the keyboard film surface layer and the keyboard film inner layer, and the light-emitting circuit is composed of a plurality of LED lamps. The branches are connected in parallel, the LED lamps on each branch are connected in series, and the light-emitting circuit is connected to the power supply through the power connector. the

in:

There are five LED lamp branches. the

There is at least one LED lamp on each branch. the

Further, a sliding rheostat is connected to the main branch of the light emitting circuit, and the sliding rheostat is connected in series with the branch of the LED lamp. By adjusting the size of the resistance connected to the sliding rheostat, the current of the light-emitting circuit can be controlled, and then the brightness of the LED lamp on each parallel branch can be adjusted. the

Still further, the light-emitting circuit is connected to a sliding rheostat, and the sliding rheostat is connected in parallel with each group of LED lamp branches. By adjusting the resistance connected to the sliding rheostat on the parallel branch, the voltage at both ends of the parallel branch is controlled. Since the resistance of the LED lamp is fixed, the current passing through each branch will change with the change of the voltage, so as to achieve regulation. The purpose of LED light brightness. When the resistance connected to the sliding rheostat is 0, the voltage at both ends of the parallel circuit is 0, and the LED lights on the parallel branch do not emit light at this time; when the resistance connected to the sliding rheostat is at the maximum value, the voltage at both ends of the parallel circuit is At this time, the brightness of the LED lights on the parallel branch road is the maximum. the

Still further, the power connector can be set as a USB interface, which can be directly connected with a computer, which is fast and convenient. the

In addition, fluorescent powder can be added to the surface layer of the keyboard membrane of the present invention, which can emit fluorescence in a dark state and play the role of lighting. In the case of sufficient fluorescence, it is not necessary to connect the keyboard membrane to a power supply. the

The utility model has the following advantages relative to the prior art:

1. It overcomes the disadvantage of inconvenient use of ordinary keyboard membranes without lighting. This keyboard membrane can emit light, which is convenient to use during the day and night. the

2. The brightness is adjustable, which is convenient for people to adjust the brightness of the keyboard membrane according to the environment and personal needs. the

3. Equipped with a USB interface, the operator can directly plug it into the computer, which is convenient and fast. the

4. It adopts two modes of fluorescent light and LED light emission. You can choose whether to use it or not to plug it in according to your needs. While providing convenience, it can save energy to the greatest extent. the

5. This product has broad demand and low cost, and is suitable for mass production. the

Description of drawings

Fig. 1 is a kind of light-emitting circuit diagram of the utility model;

Fig. 2 is another kind of light-emitting circuit diagram of the present utility model;

Fig. 3 is another kind of light-emitting circuit diagram of the present utility model;

Fig. 4 is another light-emitting circuit diagram of the utility model. the

In the figure: 1. LED lamp; 2. switch; 3. power supply; 4. sliding rheostat. the

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described. the

Example 1

As shown in Figure 1, a kind of luminous computer keyboard membrane, comprises keyboard membrane surface layer and the keyboard membrane inner layer that is combined with keyboard membrane surface layer, is provided with light-emitting circuit between keyboard membrane surface layer and keyboard membrane inner layer, and light-emitting circuit consists of 5 LED lamp branches are formed in parallel, each group of LED lamps 1 is one, and the light-emitting circuit is connected to the power supply 3 through the power connector. the

Example 2

As shown in Figure 2, a kind of luminous computer keyboard membrane, comprises keyboard membrane surface layer and the keyboard membrane inner layer that is combined with keyboard membrane surface layer, is provided with light-emitting circuit between keyboard membrane surface layer and keyboard membrane inner layer, and light-emitting circuit consists of 5 LED lamp branches are formed in parallel, each branch has one LED lamp 1, and the light-emitting circuit is connected to the power supply 3 through the power connector. Wherein, a sliding rheostat 4 is connected to the main branch of the light emitting circuit, and the sliding rheostat 4 is connected in series with the LED lamp 1 . the

When in use, adjusting the resistance connected to the sliding rheostat 4 can control the current of the light-emitting circuit, and then adjust the brightness of the LED lamp 1 on each parallel branch. the

Example 3

As shown in Figure 3, a kind of luminous computer keyboard membrane, comprises keyboard membrane surface layer and the keyboard membrane inner layer that is combined with keyboard membrane surface layer, is provided with light-emitting circuit between keyboard membrane surface layer and keyboard membrane inner layer, and light-emitting circuit consists of 5 The branch circuits of LED lamps are connected in parallel, and each branch circuit is one LED lamp 1, and the light-emitting circuit is connected to a computer through a USB interface. Wherein, the light-emitting circuit is connected to the sliding rheostat 4, and the sliding rheostat 4 is connected in parallel with the LED lamp 1. the

When in use, adjust the resistance connected to the sliding rheostat 4 on the parallel branch, and then control the voltage at both ends of the parallel branch. Since the resistance of the LED lamp 1 is fixed, the current passing through each branch will change with the voltage. , thereby adjusting the brightness of the LED lamp 1 . When the resistance connected to the sliding rheostat 4 is 0, the voltage at both ends of the parallel circuit is 0, and the LED lamp 1 on the parallel branch road does not emit light at this time; The terminal voltage is the maximum, and the brightness of the LED lamp 1 on the parallel branch road is the maximum at this time. the

Example 4

As shown in Figure 4, a kind of luminous computer keyboard membrane, comprises keyboard membrane surface layer and the keyboard membrane inner layer that is combined with keyboard membrane surface layer, is provided with light-emitting circuit between keyboard membrane surface layer and keyboard membrane inner layer, and light-emitting circuit consists of 5 One branch of the LED light is formed in parallel, and two LED lights are connected in series on each branch, and the light-emitting circuit is connected to the computer through the USB interface. the

Claims (6)

1. a kind of luminous computer keyboard membrane, comprise keyboard membrane surface layer and the keyboard membrane inner layer that is combined with keyboard membrane surface layer, it is characterized in that, be provided with light-emitting circuit between described keyboard membrane surface layer and keyboard membrane inner layer, described luminous The circuit is formed by parallel connection of multiple LED lamps (1) branches, the LED lamps (1) on each branch are connected in series, and the light emitting circuit is connected to a power source (3) through a power connector. the 2. The luminous computer keyboard membrane according to claim 1, characterized in that there are five branches of the LED lights (1). the 3. The luminous computer keyboard membrane according to claim 1, characterized in that there is at least one LED lamp (1) on each branch. the 4. The luminous computer keyboard film according to claim 1, characterized in that, a sliding rheostat (4) is connected to the main branch of the light emitting circuit, and the sliding rheostat (4) is connected in series with the branch of the LED lamp (1) connect. the 5. The luminous computer keyboard film according to claim 1, characterized in that, the luminous circuit is connected to a sliding rheostat (4), and the sliding rheostat (4) is connected in parallel with each group of LED lights (1) branches. the 6. The luminous computer keyboard membrane according to any one of claims 1-5, wherein the power connector is a USB interface, which can be directly connected to a computer. the

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