CN2207036Y - Telephone lighting lamp - Google Patents

Abstract

The utility model relates to a telephone lighting lamp used for illumination of general telephone panels. Under the condition of not changing the existing telephone or using the existing desk lamp, a rectifying filter, a photoelectric controller and an off hook ringing detector are additionally arranged, wherein, the photoelectric controller is composed of an integrated block, a relay, a photoelectric tube, etc. When ambient light illumination is lower than 10Lx, the utility model can control a lighting lamp to turn on a light source, and can control the light source to be turned on, to be turned off and to be delayed according to signals of the off hook ringing detector. The utility model has simple structure, and can achieve the effect that the telephone panels can be illuminated at the time of sending and receiving calls when the ambient light illumination is dim by the way that the utility model is connected between a 220V power supply and a terminal box of the telephone.

Description

Telephone lighting lamp

The utility model relates to a kind of phone illuminating lamp that is used for the telephone ' s faceplate illumination.

At present, generally the telephone set of Shi Yonging is when ring and off-hook conversation, except that the panel of hand telephone set has the faint illumination functions, all the other phones all do not have automatic illumination functions, therefore, when in the dark making a phone call night, the user must be illuminated telephone ' s faceplate by room lighting or other light source, can dial and give orders or instructions, trouble also can influence indoor other people rest so not to the utmost.

The purpose of this utility model is, under the situation of indoor light dimness, dials, when answering the call, and telephone ' s faceplate can obtain lighting source automatically, put down microphone after, light extinguishes automatically.

Technical solution of the present utility model is, the phone illuminating lamp is made up of rectifier filter, photoelectric controller and ring offhooking detector and illuminating lamp, one termination 220V power supply of rectifier filter, an end of the relay J in the other end and the photoelectric controller joins, and photoelectric controller is by ic chip ₁, relay J, capacitor C ₂, current-limiting resistance _RForm the NAND gate IC in the off-hook ringing detector with photoelectric tube BG ₂The terminal box of going into to be terminated at telephone set, the IC of output and photoelectric controller ₁Input control pin 11 join IC ₁Photo-electric control pin 6 and photoelectric tube and current-limiting resistance R ₁Tie point join control relay J and IC ₁Output pin 8 join capacitor C ₂With IC ₁Time-delay control pin 9 join IC ₁Voltage pin 7 connect power supply, IC ₁Pin 10 be grounding leg.IC ₁The control photoelectric controller is controlled the whether luminous of illuminating lamp.

The utility model has the advantages that: under the situation that does not change the existing telephone machine, improve the illumination of telephone ' s faceplate, when indoor illumination intensity is lower than 10Lx dial, when answering the call, the phone illuminating lamp can ignite automatically, the talk-through illuminating lamp extinguishes automatically.The utility model also can utilize existing desk lamp to reequip.

Be illustrated as the circuit connecting relation figure of phone illuminating lamp.

The illuminating lamp 5 of phone illuminating lamp is subjected to the control of relay J and goes into the 220V power supply, transformer B and diode D with 1,2 terminations ₁And filter capacitor C ₁Constitute rectifier filter, for photoelectric controller and off-hook ringing detector provide working power, photoelectric controller is by relay J, capacitor C ₂Current control circuit piece IC ₁Current-limiting resistance R ₁Form with photoelectric tube BG, photoelectric tube BG is when ambient light illumination is lower than 10Lx, and conducting makes IC ₁Be in state to be opened, but owing to do not have ring, then relay J this moment ₁Be subjected to IC ₁Control is failure to actuate, and illuminating lamp 5 does not work, if ring, then relay J are arranged ₁Be subjected to IC ₁Control action, illuminating lamp 5 is luminous, and whether when ambient light illumination during greater than 10Lx, no matter not conducting of luminous tube BG has or not ring this moment, off-hook IC ₁All do not start.Current control circuit piece IC ₁Select " 555 " ic circuit for use, IC ₁A part and capacitor C in the piece ₂Form delayer, after ringing detector obtains bell signal, IC ₂Signal is passed to IC ₁Control relay J ₁Action, illuminating lamp 5 ignites, and if this moment is off-hook not, after time-delay in 20 seconds, IC ₁Control relay J again ₁Illuminating lamp 5 is extinguished in action.If off-hook conversation, then to open light source all the time be illumination condition to switching circuit, after path finishes, hang up phone, the 20 seconds circuit of delaying time this moment enter the delay working state, control relay J action after 20 seconds, close light source, recover ortho states, the signal of off-hook ringing detector is by IC ₂Detect.IC ₂Be a NAND gate circuit, NAND gate IC ₂Two inputs 3,4 insert respectively on two terminals in the terminal box of telephone set.When indoor illumination intensity was lower than 10Lx, if the off-hook conversation, off hook signal passed through IC ₂Be delivered to IC ₁, control relay J then ₁Action, but illuminating lamp 5 luminous lighting still.

Claims (1)

1, a kind of phone illuminating lamp of forming by rectifier filter, photoelectric controller and off-hook ringing detector, it is characterized in that, the end of the output of rectifier filter and control relay J joins, the other end of relay J is connected on the output pin 8 of Current Control piece in the photoelectric controller, the voltage pin 7 of Current Control piece connects power supply, in resistance R ₁, connecing photo-electric control pin 6 with the tie point place of photoelectric tube, time-delay control pin 9 connects capacitor C ₂, voltage pin 7 connects power supply, and pin 10 is a grounding leg, and input control pin 11 joins with the end that goes out of the NAND gate of off-hook ringing detector, and end points joins in the terminal box of going into end and telephone set of NAND gate.

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