CN2432433Y

CN2432433Y - Desk lamp with answering function

Info

Publication number: CN2432433Y
Application number: CN00224656U
Authority: CN
Inventors: 吴忠祥
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-04-19
Filing date: 2000-04-19
Publication date: 2001-05-30
Anticipated expiration: 2010-04-19

Abstract

The desk lamp with answering function of the utility model is mainly composed of a lamp (1), a lamp stand (2), and a pair of desk lamps with a seat shell (3). The seat shell is equipped with a button (4), a microphone (5), and a loudspeaker (6). , The power amplifier integrated block TDA2822H is installed in the seat shell, the audio is amplified through A1, the transformer B, and the connection line (7) are output to the integrated block A ₂ of the corresponding desk lamp, and then amplified again to form a mutual response network. It has a side tone cancellation circuit composed of B, C ₁₁ , W ₁ , W ₂ and so on. The lamp lighting and the answering circuit are set separately. The utility model has the advantages of simple structure, convenient use, stable performance and low cost, and is a simple tool for communication between families or office rooms.

Description

Desk lamp with answering

The utility model relates to the daily life lighting device, is a kind of desk lamp with answering.

Desk lamp used in everyday has usually to be convenient to move, and install easily, be easy to regulate advantages such as light angle or brightness, also be the indispensable practical items of interspersing decoration before the head of a bed case.Along with the raising of people's living standard and the increase of varied and colorful demand, in high rhythm life, particularly need short distance should exhale the opportunity of contact to increase between the building inner room, no doubt routine call can be finished and should exhale task, but need to increase equipment investment and service spending, so on the lighting lamp of routine, further expand design and have simple and easy answering, become one of manufacturer's development goal.

Development task of the present utility model is: on the corresponding desk lamp more than a pair of, call button, microphone, loudspeaker and the on line etc. that expose respectively are housed, amplify and reach corresponding desk lamp and raise one's voice by being contained in power amplifier in the lamp stand shell sound of will passing on a message, become the desk lamp that has answering mutually.

Technical pattern of the present utility model mainly is made of the desk lamp that light fixture, lamp bracket and seat shell are formed, and is characterized in respectively being fixed with on paired lamp stand shell call button, microphone, the loudspeaker that exposes; Respectively be fixed with integrated package TDA2822H, the A in the integrated package in the seat shell ₁Amplify 7 pin and pass through capacitor C ₂Connect microphone, 8 pin pass through capacitor C ₄Ground connection, 2 pin connect positive source, 4 pin ground connection, 1 pin output signal is passed through capacitor C ₇Connect the main coil of power transformation device B; A ₂ Output 3 pin that amplify pass through capacitor C ₈Connect with loudspeaker, import 5 pin and pass through capacitor C ₆Ground connection, 6 pin pass through capacitor C ₅, variable resistor W ₂The secondary coil L of tietransformer B ₁, L ₂The abutment, L ₁The other end through capacitor C ₁₁(routine first desk lamp), by the capacitor C in the circuit on line and the corresponding second lamp stand shell ₁₁Outer contact links, the A of final UNICOM second desk lamp ₂Amplify 6 pin, L ₂The other end by variable resistor W ₁Ground connection, the A of microphone ₁Also be associated with ground capacity C in the amplifying circuit ₁, C ₃, earth resistance R ₃, the on line resistance R ₁ ^*, R ₂, call button AN, and prevent power amplifier self-excited circuit C ₉, R ₅, the A of loudspeaker ₂Also be associated with ground capacity C in the amplifying circuit ₁₂, earth resistance R ₄And prevent power amplifier self-excited circuit C ₁₀, R ₆, other has power supply positive and negative electrode contact to connect dc source.The power cathode of corresponding desk lamp also joins by on line.

Desk lamp with said structure will have following good effect: (1) by close call out the ammonium button after, A ₁7 pin can import the signal of telecommunication from microphone, through A ₁After the amplification, 1 pin outputs signal to transformer B, responds to by secondary coil, and then signal is sent to the transformer secondary output coil L of corresponding desk lamp ₁, integrated package 6 pin, through A ₂Amplify once more, make corresponding desk lamp loudspeaker sounding.(2) by B, C ₁₁, W ₁, W ₂And the impedance etc. of the corresponding desk lamp of networking formed anti-side-tone circuit, adjusts W before using earlier ₁, W ₂, make the secondary coil L of transformer B ₁, L ₂The impedance at two ends equate.Accept sound wave when the microphone of first desk lamp, transfer the signal of telecommunication to through A ₁Amplify, during by B, because L ₁, L ₂The impedance at two ends equates, is sent to W ₂Signal magnitude identical, direction is opposite, cancels each other, and causes the loudspeaker sounding sound hardly on self desk lamp, has eliminated sidetone, but signal can be delivered to the A of corresponding desk lamp simultaneously ₂Amplify, make corresponding desk lamp loudspeaker sounding.(3) capacitor C ₂Can prevent the microphone self-excitation.C ₁₂The noise that the transmission induction can be come in bypasses.C in two frame of broken lines ₉, R ₅And C ₁₀, R ₆Can prevent the power amplifier self-excitation.(4) said structure reply desk lamp, when having only the first desk lamp when closing call button, can make second desk lamp place hear the call sound of first desk lamp, but the first desk lamp can not listen to the pronunciation at second desk lamp place, makes the movable sound of second desk lamp can be in confidential state.Only the first and second desk lamp both sides all by after closing call button, can reply conversation mutually.(5) mains lighting supply of this desk lamp and answering circuit power supply are provided with respectively, do not disturb mutually, when promptly desk lamp does not throw light on, still can reply conversation.(6) this desk lamp can be called a plurality of desk lamps personnel of place simultaneously if link by many circuits and a plurality of desk lamp, perhaps realizes the purpose with a plurality of desk lamps personnel of place while call for Votes.(7) this answering board modulated structure is simple, easy to use, and complete machine has that frequency response is wide, distortion is few, the efficient advantages of higher, and stable performance, and power consumption is few, and is with low cost, is specially adapted to the short distance contact between the room of family and office building.Emergent transaudient when also can be used for meeting accident makes corresponding desk lamp place in time learn the situation of generation.

Fig. 1 is that corresponding desk lamp first, second is provided with the profile schematic diagram.

Fig. 2 is the answering circuit schematic diagram.

Fig. 3 can supply to answer the rectification filtering power schematic diagram that circuit uses.

As seen replying desk lamp first, second from Fig. 1 respectively has light fixture (1), lamp bracket (2), seat shell (3), power line (8) and present shell and is fixed with the call button (4) that exposes, microphone (5), loudspeaker (6), on line (7) etc.

Fig. 2 is a kind of embodiment of the utility model answering circuit.This answering circuit mainly adopts high-quality power amplifier integrated package TDA2822H, the voice signal that desk lamp first microphone (5) inspection is picked up, the A in TDA2822H ₁Amplify, the signal after the amplification send the A of desk lamp second by transformer B secondary coil, outside on line (7) ₂After amplifying once more, make the loudspeaker playback of desk lamp second.Microphone among the figure (5) adopts Electret condenser microphone, and power discharging integrated block also can adopt KD28 double power amplifier integrated package, and B adopts common miniature transformer, and loudspeaker 8 Ω, call button (4) can also be the switches that switchette or button combine with switch, other C ₁47 μ f, C ₂1 μ f, C ₃100 μ f, C ₄100 μ f, C ₅10 μ f, C ₆10 μ f, C ₇10 μ f, C ₈100 μ f, C ₉0.1 μ f, C ₁₀0.1 μ f, C ₁₁10 μ f, C ₁₂470 μ f, R ₁ ^*, R ₂2K Ω, R ₃10K Ω, R ₄10K Ω, R ₅5K Ω, R ₆5K Ω, W ₁4K Ω, W ₂1K Ω, contact M, N connect the 6V battery plus-negative plate respectively, and on line (7) connects F, the N contact of corresponding desk lamp first, second respectively.

According to user's needs, also can in circuit, increase and meet R _L ^*And light emitting diode, in case, make the luminous prompting of light emitting diode (9) user by after closing call button (4).

Fig. 3 is a kind of rectification filtering power of recommendation, directly utilizes electric main 220V, and constant voltage 6V is provided after the rectification direct current, substitutes the 6V battery.

Claims

1. The desk lamp with answering function is mainly composed of a lamp (1), a lamp stand (2), a seat shell (3), and a power cord (8). It is characterized in that the seat shells (3) of paired desk lamps A and B The exposed call button (4), microphone (5), and loudspeaker (6) are fixedly installed on the top, each integrated block TDA2822H is fixedly installed in the seat shell (3), and the 7 pins amplified by A ₁ in the integrated block pass through the capacitor C ₂ Connect the microphone (5), pin 8 is grounded through capacitor C ₄ , pin 2 is connected to the positive pole of the power supply, pin 4 is grounded, the output signal of pin 1 is connected to the main coil of transformer B through capacitor C ₇ , and the output amplified by A ₂ in the integrated block is connected to pin 3 through the capacitor C ₈ is connected to the speaker, pin 5 is grounded through capacitor C ₆ , pin 6 is connected to the junction point of L ₁ and L ₂ in the secondary coil of transformer B through capacitor C ₅ and variable resistor W ₂ , the other end of L ₁ is connected to the capacitor C ₁₁ external contact points F, the other end of _L2 is grounded through the variable resistor _W1 , and the _A1 amplifier circuit of the microphone (5) is also connected with grounding capacitors _C1 , _C3 , grounding resistor _R3 , and connecting resistor _R1 ^* , R ₂ , the call button AN, and the power amplifier self-excitation prevention circuit C ₉ , R ₅ , the speaker A ₂ amplifier circuit is also connected with the grounding capacitor C ₁₂ , the grounding resistance R ₄ , and the power amplifier self-excitation prevention circuit C ₁₀ , R _6. Power supply connectors M and N are respectively connected to the positive and negative poles of the DC power supply, and another connection line (7) is connected to the F and N contacts of the corresponding desk lamps A and B respectively.

2. The desk lamp with answering function according to claim 1, characterized in that C ₁ 47μf, C ₂ 1μf, C ₃ 100μf, C ₄ 100μf, C ₅ 10μf, C ₆ 10μf, C ₇ 10μf, C ₈ 100μf, C ₉ 0.1μf, C ₁₀ 0.1μf, C ₁₁ 10μf, C ₁₂ 470μf, R ₂ 2KΩ, R ₃ 10KΩ, R ₄ 10KΩ, R ₅ 5KΩ, R ₆ 5KΩ, W ₁ 4KΩ, W ₂ 1KΩ, DC power supply 6V.

3. The desk lamp with answering function according to claim 1 or 2, characterized in that the circuit is also equipped with a light-emitting diode and R _L ^* controlled by the call button (4), and the light-emitting diode (9) is fixed on the seat shell (3) Exposed parts.