CN102113816A - Letter box - Google Patents
Letter box Download PDFInfo
- Publication number
- CN102113816A CN102113816A CN2009102475856A CN200910247585A CN102113816A CN 102113816 A CN102113816 A CN 102113816A CN 2009102475856 A CN2009102475856 A CN 2009102475856A CN 200910247585 A CN200910247585 A CN 200910247585A CN 102113816 A CN102113816 A CN 102113816A
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- China
- Prior art keywords
- letter
- box
- pin
- mailbox
- letter box
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000000694 effects Effects 0.000 abstract description 2
- 230000003287 optical effect Effects 0.000 abstract 1
- 239000003990 capacitor Substances 0.000 description 5
- 230000007812 deficiency Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Supports Or Holders For Household Use (AREA)
- Alarm Systems (AREA)
Abstract
The invention discloses a letter box. The letter box comprises a box body, wherein the box body is provided with a letter drop. The letter box is characterized in that: an optical control system for detecting whether a letter is contained in the box body is arranged inside the box body and is connected with an alarm device which is arranged in the home of a user. When the letter does not exist in the letter box and a door of the letter box is closed, a circuit is in an off state, and a buzzer and an alarm indicator lamp do not work; after the letter is dropped in the letter box, the circuit is switched on due to the shading effect of the letter, the buzzer sends out an alarm and the alarm indicator lamp is lighted to prompt a master of the letter in the letter box; after the letter box is opened by the user, the alarm indicator lamp is switched off, and the buzzer continuously sends out the alarm under the action of a delay control circuit until capacitive discharge is finished; and after the letter is taken away by the user and the door of the letter box is closed, the circuit is restored to the initial off state to show that the letter does not exist in the letter box. The letter box is used for a household letter box, so that the user can be timely prompted to take the letter away to prevent unnecessary trouble and loss.
Description
Technical field:
The present invention relates to a kind of mailbox, is a kind of mailbox that contains the light control alarm device specifically.
Background technology:
Along with the development of society, rise residential is more and more general.General, for high residential building, letter box all can be arranged on the Stall porch of this floor, the delivery of Convenient letter, simultaneously, because present most of mailbox need the user to unblank to check whether mail is arranged, therefore for the resident who lives in higher floor, downstairs winning the confidence becomes thing indispensable in the life.Sometimes in order to collect an envelope mail, people have to often open mailbox downstairs so that check, not only lose time but also fritter away energy, and sometimes can check mailbox and miss some important mails that therefore, there is deficiency in the use in existing mailbox because of forgetting again.
Summary of the invention:
The present invention seeks to be to overcome above-mentioned mailbox in the use deficiency and a kind of mailbox of providing, this mailbox contains the light control alarm device, when in the mailbox mail being arranged, warning device can be sounded and be reported to the police and light alarm indicator, in time reminds indoor people.
To achieve these goals, technical scheme of the present invention is as follows:
A kind of mailbox comprises casing, and casing is provided with drop, it is characterized in that, described box house is provided with one and detects the light control system whether mail is arranged in the casing, and described light control system connects a warning device that is arranged among the mailbox host.
Described light control system is arranged on the drop inboard of thinking in the body.
Described warning device comprises a buzzer and an alarm indicator.
Described indicator lamp is a light emitting diode.
When not having mail, the triode of control warning system is in the duty of ending, and buzzer and alarm indicator are not worked.
When mail dropped into, the triode of control warning system was in the duty of conducting, buzzer warnings of sounding, and alarm indicator is bright simultaneously, in the prompting owner mailbox mail is arranged.
After the user opened mailbox door and takes mail away, the triode of control warning system was returned to the duty of ending, and buzzer stops to report to the police, and alarm indicator extinguishes, no mail in the expression mailbox.
Beneficial effect, the present invention is mainly used in the family expenses mailbox, in time notifies owner to collect mail by the dual type of alarm of buzzer and indicator lamp, avoids unnecessary trouble and loss.
Description of drawings:
Describe the present invention in detail below in conjunction with the drawings and specific embodiments:
Fig. 1 is the fundamental diagram of a kind of mailbox of the present invention.
Fig. 2 is 4011 pin of chip figure in a kind of mailbox of the present invention.
The specific embodiment:
For technological means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, further set forth the present invention below in conjunction with concrete diagram.
As shown in Figure 1, the operation principle of the light control alarm device of described a kind of mailbox mainly comprises light-operated, and time-delay control triggers control and four parts of warning circuit.Wherein, it is first light-operated and second light-operated that light-operated part is divided into again, and first is light-operated by lamp LED1, photo resistance RG1, and capacitor C 1 and triode Q control the incoming level state of U1 pin 1; Second is light-operated by lamp LED2, photo resistance RG2 and switch S 1 ' control the incoming level state of U1 pin 2, and wherein, lamp LED2 and photo resistance RG2 are placed in the camera bellows, in order to avoid influence each other with lamp LED1 and photo resistance RG1.The time-delay control section carries out time-lag action by capacitor C 2 and fixed value resistance R7 to buzzer.Trigger control section by U3 and U4 and two triode VT1, VT2 triggers control to circuit.Warning circuit is partly controlled the duty of alarm indicator by switch S 1.Wherein, U1, U2, U3, U4 correspond to chip 4011, and 14 pin of chip connect positive source by lead, 7 pin ground connection.S1 and S1 ' belong to coupled switch, by mailbox door control, and when mailbox door is in closed condition, switch S 1 closure, S1 ' disconnection; When mailbox door was in open mode, switch S 1 disconnected S1 ' closure.
Ordinary circumstance is not when having mail and mailbox door to close in the mailbox, switch S 1 closure, S1 ' disconnection, be connected in positive source and with switch S 1 ', the lamp LED2 that connects of fixed value resistance R6 do not work, at this moment, in parallel with lamp LED2 and be positioned at lamp LED2 top, the resistance of the photo resistance RG2 that connect with variable resistor RP3, fixed value resistance R5 becomes greatly, and then makes 2 pin of U1 be in high level state.Meanwhile, owing to do not have mail in the mailbox, the lamp LED1 that is connected in positive source and connects with fixed value resistance R2 is bright, this moment is with lamp LED1 parallel connection and be positioned at connecting with variable resistor RP1 and fixed value resistance R1 of lamp LED1 top, the photo resistance RG1 resistance in parallel with capacitor C 1 and triode Q1 diminishes, and then makes 1 pin of U1 be in low level state.At this moment, because 1 pin of U1 is a low level, 2 pin are high level, output 3 pin are high level behind U1, output 3 pin of U1 connect input 5 pin and 6 pin of U2, and output 4 pin are low level behind U2, and then end with U2 diode in series VD1, circuit is in off-state, and buzzer and alarm indicator are not worked.
When mail after drop drops into, because mail has blocked lamp LED1 and has impinged upon light on the photo resistance RG1, make the resistance of RG1 become big, and then make the pin 1 of U1 be high level state, because this moment, the pin 2 of U1 still was a high level, therefore, output 3 pin are low level behind U1, output 3 pin of U1 connect input 5 pin and 6 pin of U2, and output 4 pin are high level behind U2, this moment and U2 diode in series VD1 conducting, input 8 pin and 9 pin of the U3 that connects with diode are high level, output 10 pin are low level behind U3, and output 10 pin of U3 connect input 12 pin and 13 pin of U4, and output 11 pin are high level behind U4, at this moment, triode VT1 and VT2 are the duty of conducting, the warning circuit conducting, buzzer sound report to the police and alarm indicator bright.
After opening mailbox door, switch S 1 disconnects, S1 ' closure, and the lamp LED2 that connects with S1 ' is bright, and photo resistance RG2 resistance that be positioned at lamp LED2 top in parallel with lamp LED2 diminishes, and then make the pin 2 of U1 be low level, because the pin 1 of U1 is a high level still at this moment, output 3 pin are high level behind U1, output 3 pin of U1 connect input 5 pin and 6 pin of U2, output 4 pin are low level behind U2, and then are in the duty of ending with U2 diode in series VD1, and alarm indicator goes out.Simultaneously, the capacitor C 2 in parallel with fixed value resistance enters discharge condition, with input 8 pin and the 9 pin input high levels of the U3 of capacitances in series, output 10 pin are low level behind U3, and output 10 pin of U3 connect input 12 pin and 13 pin of U4, output 11 pin are high level behind U4, at this moment, triode VT1 conducting, buzzer continues to report to the police within a certain period of time, finish until capacitor C 2 discharges, buzzer stops to report to the police.
After taking mail away and closing mailbox door, switch S 1 closure, S1 ' disconnection, circuit is returned to initial not believing and the mailbox door closing state in mailbox, wait for the arrival of mail next time.
In the present invention, the direct current of described power supply output 12V.
More than show and described basic principle of the present invention, principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present invention; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (4)
1. a mailbox comprises casing, and casing is provided with drop, it is characterized in that, described box house is provided with one and detects the light control system whether mail is arranged in the casing, and described light control system connects a warning device that is arranged among the mailbox host.
2. a kind of mailbox according to claim 1 is characterized in that, described light control system is arranged on the drop inboard of thinking in the body.
3. a kind of mailbox according to claim 1 is characterized in that, described warning device comprises a buzzer and an alarm indicator.
4. a kind of mailbox according to claim 3 is characterized in that, described indicator lamp is a light emitting diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102475856A CN102113816A (en) | 2009-12-30 | 2009-12-30 | Letter box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102475856A CN102113816A (en) | 2009-12-30 | 2009-12-30 | Letter box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102113816A true CN102113816A (en) | 2011-07-06 |
Family
ID=44212833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102475856A Pending CN102113816A (en) | 2009-12-30 | 2009-12-30 | Letter box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102113816A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2927896Y (en) * | 2006-07-28 | 2007-08-01 | 王静轩 | Optical control automatic imforming mail box |
| CN201147161Y (en) * | 2007-12-13 | 2008-11-12 | 李正清 | Induction mailbox |
| CN201578011U (en) * | 2009-08-26 | 2010-09-15 | 施杭烊 | Mail prompting mail box |
-
2009
- 2009-12-30 CN CN2009102475856A patent/CN102113816A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2927896Y (en) * | 2006-07-28 | 2007-08-01 | 王静轩 | Optical control automatic imforming mail box |
| CN201147161Y (en) * | 2007-12-13 | 2008-11-12 | 李正清 | Induction mailbox |
| CN201578011U (en) * | 2009-08-26 | 2010-09-15 | 施杭烊 | Mail prompting mail box |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110706 |