CN210536976U

CN210536976U - Instantaneous protector for switching on and off of bulb

Info

Publication number: CN210536976U
Application number: CN201921267273.7U
Authority: CN
Inventors: 韩嘉轩; 曾昆峰; 卢杰; 高永卫
Original assignee: Kunming Dianchi Middle School
Current assignee: Kunming Dianchi Middle School
Priority date: 2019-08-07
Filing date: 2019-08-07
Publication date: 2020-05-15
Anticipated expiration: 2029-08-07

Abstract

The utility model discloses a bulb power-on and power-off instant protector, which comprises a control mainboard connected with a bulb, wherein the control mainboard is provided with an MCU (microprogrammed control unit), and also comprises a current-limiting protection module for bulb power-on and power-off instant protection, and the current-limiting protection module is connected on a bulb circuit in series and is connected with the MCU; when the lamp is powered on, the brightness of the lamp bulb gradually changes according to the weak intensity, the medium intensity and the strong intensity, and the temperature of the lamp filament is limited to suddenly change, otherwise, the same is true, the utility model provides a protector for the instant when the lamp bulb is powered on and off, the protector acts at the instant when the lamp bulb is powered on and off, and the problem that the lamp filament of the lamp bulb is burnt down due to the rapid temperature change at the instant when the; the utility model discloses further design current-limiting protection module includes two series connection's resistance R1 and R2, on resistance R1 and the series connection of R2 inserted bulb circuit, there are relay switch KM1 and relay switch KM2 on resistance R1 and the resistance R2 respectively in parallel, through the chronogenesis of the bulb circuit of control resistance R1 and R2 to relay switch KM1 and relay switch KM2 access, realize bulb on-off protection in twinkling of an eye.

Description

Instantaneous protector for switching on and off of bulb

Technical Field

The utility model relates to a bulb control technical field specifically is a bulb break-make electricity protector in twinkling of an eye.

Background

The lamp is powered on instantly. Since the filament resistance R is the smallest at normal temperature, it is known from the lamp that the actual power of the lamp is the largest at a constant voltage, and therefore, the lamp is easily burned out at the moment of turning on the lamp. The temperature of the tungsten filament exceeds the melting point of tungsten when the bulb is burnt out, the temperature of the bulb is low when the bulb is electrified, the resistance is small, the current is large, the temperature rises quickly, the resistance is large after the temperature rises, the current is small, the temperature rises slowly, and the temperature cannot rise any more when the temperature rises to the temperature during normal light emitting. After the lamp is turned off, the tungsten filament is cooled from high temperature, the tungsten filament is cooled and contracted, and the filament breakage is easily caused.

Aiming at the problem, a bulb power-on and power-off instant protector is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a bulb break-make electricity protector in the twinkling of an eye to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a bulb power-on and power-off instant protector comprises a control mainboard connected with a bulb, wherein an MCU (microprogrammed control unit) is arranged on the control mainboard, and the bulb power-on and power-off instant protector also comprises a current-limiting protection module for protecting the bulb at the moment, wherein the current-limiting protection module is connected on a bulb circuit in series and is connected with the MCU; when the lamp is powered on, the brightness of the lamp bulb gradually changes according to the intensity of the lamp filament, and when the lamp is powered off, the brightness of the lamp bulb gradually changes according to the intensity of the lamp filament, so that the temperature of the lamp filament is limited to suddenly change.

As a further aspect of the present invention: the power supply module 5 is used for storing power and supplying power, and the power switch button is also included;

as a further aspect of the present invention: the current-limiting protection module comprises two resistors R1 and R2 which are connected in series, the resistors R1 and R2 are connected in series to a bulb circuit, the resistor R1 and the resistor R2 are respectively connected in parallel with a relay switch KM1 and a relay switch KM2, the relay switches KM1 and KM2 are respectively connected with an MCU, and the MCU controls the time sequence of the resistors R1 and R2 to be connected to the bulb circuit through the relay switches KM1 and KM 2.

As a further aspect of the present invention: the lamp bulb state detection device further comprises a state detection unit for detecting the on-off state of the lamp bulb, and the state detection unit is connected with the MCU.

As a further aspect of the present invention: the brightness of the bulb is set to be first-third-grade brightness; wherein, the brightness of the first grade is 'weak', the brightness of the second grade is 'medium', the brightness of the third grade is 'strong', and the brightness of the third grade is 'strong', which is the normal brightness; when the lamp is turned on, the lamp bulb is turned on according to the weak intensity, and when the lamp is turned off, the lamp bulb is turned off according to the strong intensity.

Compared with the prior art, the utility model provides a bulb power-on and power-off instant protector, which comprises a current-limiting protection module, wherein the current-limiting protection module acts at the power-on and power-off instant, thereby avoiding the problem that the filament of the bulb is burnt out due to the rapid temperature change at the power-on and power-off instant;

the utility model discloses further design current-limiting protection module includes two series connection's resistance R1 and R2, and on resistance R1 and R2 series connection inserted the bulb circuit, there are relay switch KM1 and relay switch KM2 on resistance R1 and the resistance R2 respectively in parallel, relay switch KM1 and KM2 are connected with MCU respectively, and MCU passes through the chronogenesis that relay switch KM1 and KM2 control resistance R1 and R2 inserted the bulb circuit, convenient control.

The utility model further comprises a state detection unit for detecting the on-off state of the bulb, and the state detection unit is connected with the MCU; pressing a power switch button, and detecting the working state of the bulb by the system through a state detection unit; if the bulb is in an off state, the light-on protection program is started, and if the bulb is in an on state, the light-off protection program is started, so that the control is further facilitated.

Drawings

Fig. 1 is a schematic block diagram of a system of a bulb power-on instant protector.

Fig. 2 is a schematic block diagram of a current limiting protection module in a protector at the moment when a bulb is powered on and off.

In the figure: 1. a control main board; 2. MCU; 3. a state monitoring unit; 4. a bulb; 5. a power supply module; 6. and a current limiting protection module.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Referring to fig. 1-2, a bulb power-on and power-off instant protector comprises a control main board 1 connected with a bulb 4, wherein the control main board 1 is provided with an MCU2, and further comprises a current-limiting protection module 6 for instant protection of the bulb 4, wherein the current-limiting protection module 6 is connected in series with a circuit of the bulb 4 and is connected with an MCU 2; when the lamp is powered on, the brightness of the lamp bulb 4 gradually changes according to the intensity, the temperature of the filament is limited to suddenly change, and when the lamp is powered off, the brightness of the lamp bulb 4 gradually changes according to the intensity, the intensity and the intensity, and the temperature of the filament is limited to suddenly change.

The power supply module 5 is used for storing power and supplying power, and the power switch button is also included;

the current-limiting protection module 6 comprises two resistors R1 and R2 which are connected in series, the resistors R1 and R2 are connected in series to the circuit of the bulb 4, the resistor R1 and the resistor R2 are respectively connected in parallel with a relay switch KM1 and a relay switch KM2, the relay switches KM1 and KM2 are respectively connected with the MCU2, and the MCU2 controls the time sequence of the resistors R1 and R2 connected to the circuit of the bulb 4 through the relay switches KM1 and KM 2.

Wherein, still include the state detection unit 3 that is used for detecting the switching state of bulb 4, state detection unit 3 is connected with MCU 2.

Wherein, the brightness of the bulb 4 is set to be first-third grade brightness; wherein, the brightness of the first grade is 'weak', the brightness of the second grade is 'medium', the brightness of the third grade is 'strong', and the brightness of the third grade is 'strong', which is the normal brightness; when the lamp is turned on, the lamp bulb 4 is lightened according to the weak intensity, and when the lamp is turned off, the lamp bulb 4 is extinguished according to the strong intensity.

The utility model discloses a theory of operation is: the system will detect the operating condition of the bulb by pressing the power switch button. If the bulb is in the off state, the light-on protection program is started, and if the bulb is in the on state, the light-off protection program is started. When the lamp is turned on: two resistors R1 and R2 are connected in series and then connected into a bulb circuit, and because R1 and R2 are connected in series at the same time, the current in the circuit is small. The brightness of the bulb is in a weak gear, and the temperature of the filament gradually rises after waiting for a period of time. The controller shorts R1, the current is increased, and the brightness of the lamp bulb is middle. After waiting for a period of time again, the controller shorts R2, the current continues to increase to normal operating current, and the bulb lights normally. The lamp is turned off in reverse time sequence. The current limiting is used for controlling the sharp change of the temperature of the filament to play a role in protecting the bulb.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.

Claims

1. A bulb power-on and power-off instant protector comprises a control main board (1) connected with a bulb (4), and is characterized in that an MCU (2) is arranged on the control main board (1), the protector also comprises a current-limiting protection module (6) for instant protection of the bulb (4), and the current-limiting protection module (6) is connected in series on a circuit of the bulb (4) and is connected with the MCU (2); when the lamp is powered on, the brightness of the lamp bulb (4) gradually changes according to the intensity of the lamp filament, so that the temperature of the lamp filament is limited to suddenly change, and when the lamp is powered off, the brightness of the lamp bulb (4) gradually changes according to the intensity of the lamp filament, so that the temperature of the lamp filament is limited to suddenly change.

2. A momentary protector for a lamp bulb when it is turned on and off according to claim 1; the power supply device also comprises a power supply module (5) for storing electricity and supplying energy and a power switch button.

3. A momentary protector for a lamp bulb when it is turned on and off according to claim 1; the current-limiting protection module (6) comprises two resistors R1 and R2 which are connected in series, the resistors R1 and R2 are connected in series to the circuit of the bulb (4), the resistor R1 and the resistor R2 are respectively connected in parallel with a relay switch KM1 and a relay switch KM2, the relay switches KM1 and KM2 are respectively connected with the MCU (2), and the MCU (2) controls the time sequence of the resistors R1 and R2 connected to the circuit of the bulb (4) through the relay switches KM1 and KM 2.

4. A momentary protector for a lamp bulb according to any one of claims 1 to 3, wherein; the lamp also comprises a state detection unit (3) for detecting the open-close state of the bulb (4), and the state detection unit (3) is connected with the MCU (2).

5. A protector for a lamp at the moment of turning on and off a lamp according to claim 4, wherein; the brightness of the bulb (4) is set to be first-third-grade brightness; wherein, the brightness of the first grade is 'weak', the brightness of the second grade is 'medium', the brightness of the third grade is 'strong', and the brightness of the third grade is 'strong', which is the normal brightness; when the lamp is turned on, the lamp bulb (4) is lightened according to the weak intensity, and when the lamp is turned off, the lamp bulb (4) is extinguished according to the strong intensity.