CN201827851U

CN201827851U - Power supply-free telephone auxiliary lamp

Info

Publication number: CN201827851U
Application number: CN2009201900562U
Authority: CN
Inventors: 丁文建
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-07-29
Filing date: 2009-07-29
Publication date: 2011-05-11
Anticipated expiration: 2019-07-29

Abstract

The utility model relates to a telephone lighting device, and aims to solve the technical problem that an auxiliary power supply or a battery is needed to achieve the lighting function when a telephone set is in use. In order to solve the technical problem, the utility model adopts the specific scheme that a lighting device and a diode are serially connected to a telephone line through two ports; and an LED works to achieve the lighting effect by utilizing the line current during the off-hook of the telephone set and utilizing a diode bridge rectifier to serve as the auxiliary circuit. The utility model provides a telephone auxiliary lamp without using any power supply.

Description

Passive phone auxiliary lamp

Technical field

The utility model relates to a kind of phone lighting device of phone lighting device, particularly a kind of power-free, is applicable to the place that needs floor light when using phone.

Background technology

The lighting problem of telephonic communication when producing at first not consideration use, the telephone set of latest generation has the partial illumination function, but only limits to dial or LCD panel; If when using phone, need write down or check literal, must use other lighting, this is extremely inconvenient, also disturbs other people who does not need light (as the length of one's sleep at night) in addition easily.

Have multinomial close patented technology to address this problem, but great majority must use AC220V power supply or battery, as " 94209430.1 phone illuminating lamp ", " 93224270.7 1 kinds of light-operated lighting devices of phone "; Favourable in addition " 200620064201.9 1 kinds of light fixtures that combine with telephone set " with the phone line powering, but it can not realize illumination functions in the process of using telephone set, otherwise, when using illumination functions, can't use telephone set, because lighting device is in parallel with telephone set.

In fact a comparatively practical demand is: non-attended light is bright when receiving calls, the back non-attended light of hanging up the telephone goes out and do not need additional power supply power supply, device with low cost, the technical scheme that the utility model addresses the above problem just.

The utility model content

Technical problem to be solved in the utility model is: do not use the accessory power supply that comprises battery, connect telephone wire and telephone set respectively by first port (1), second port (2) that is located on the device, and by diode rectifier bridge heap conversion from the polarity of voltage of telephone line so that LED work is luminous, when using telephone set, realize illumination functions.

The technical scheme that the utility model adopted is:

1. device is connected between telephone wire and the telephone set by first port (1), second port (2);

2. device inside comprises a diode rectifier bridge heap circuit, and the voltage that is used for changing from telephone line makes it keep polarity correct, and is delivered to the LED two ends, makes LED work luminous.

3. passive phone auxiliary lamp based on telephone wire is characterized in that: this device is made up of first port (1), second port (2), diode rectifier bridge heap and 1 LED illumination component at least; 2 interchange ends of diode rectifier bridge heap connect telephone set by first port (1) connection telephone wire, second port (2) respectively, and 2 DC port are connected with the LED positive and negative electrode respectively.

The beneficial effects of the utility model are: need not use the accessory power supply power supply that comprises battery, bright, the back non-attended light of hanging up the telephone of non-attended light goes out when receiving calls, for need write down or check that literal provides illumination functions when using phone.

Description of drawings

Fig. 1 is 1 preferred principle legend of implementing of the present utility model.

The specific embodiment

Be the utility model embodiment preferred 1 circuit theory diagrams as shown in Figure 1, first port (1) is connected telephone wire and telephone set respectively with second port (2); The interchange end 1 of diode rectifier bridge heap is connected to 2 pin of first port (1), exchanges 2 pin that end 2 is connected to second port (2), and the both positive and negative polarity of diode rectifier bridge heap connects the both positive and negative polarity of LED respectively; 1 pin of first port (1) directly is connected with 1 pin of second port (2); Like this, no matter telephone wire polarity how, can form current loop and make LED work on LED when the telephone set off-hook.

Claims

1. passive phone auxiliary lamp based on telephone wire is characterized in that: this device is made up of first port (1), second port (2), diode rectifier bridge heap and 1 LED illumination component at least; 2 interchange ends of diode rectifier bridge heap connect telephone set by first port (1) connection telephone wire, second port (2) respectively, and 2 DC port are connected with the LED positive and negative electrode respectively.