LED temperature sensing display device with zero standby power consumption

Abstract

The utility model discloses an LED temperature sensing display device with zero standby power consumption, which comprises a PCB (printed circuit board), a charging interface connected onto the PCB, a charging and discharging chip, a rechargeable battery, a temperature control switch and an LED light source, the output end of the charging interface is connected with the input end of the charging and discharging chip charging control circuit, the output end of the charging and discharging chip charging control circuit is connected with the rechargeable battery so as to charge the rechargeable battery, and the rechargeable battery, the normally open contact of the temperature control switch, the discharging protection circuit of the charging and discharging chip and the LED light source are sequentially and circularly connected in series. The temperature sensing display device is zero in standby power consumption, environment-friendly and energy-saving, and the service life of the temperature sensing display device is greatly prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of temperature sensing equipment, in particular to an LED temperature sensing display device with zero standby power consumption. Background Art

[0002] At present, temperature sensing devices mainly include two types: thermocouples and thermal resistors. Thermocouples output millivolt voltage signals according to temperature changes, while thermal resistors change their own resistance according to temperature changes. Both require transistors or operational amplifier ICs for calculation and output. This type of temperature control and display requires continuous power supply or battery to provide power. Moreover, they are large in size, relatively expensive, have complex electronic control circuits, and have high standby power consumption. Due to long-term energized operation, their internal electronic components age quickly and have varying lifespans, which affects their service life. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an LED temperature sensing display device with zero standby power consumption, which is environmentally friendly and energy-saving, and greatly increases the service life of the temperature sensing display device.

[0004] The technical solution of the utility model is:

[0005] A standby zero-power LED temperature-sensing display device includes a PCB board, a charging interface connected to the PCB board, a rechargeable battery, a temperature-controlled switch, and an LED light source. The charging interface is connected to the rechargeable battery to charge the rechargeable battery. The rechargeable battery, the normally open contact of the temperature-controlled switch, and the LED light source are sequentially connected in series in a loop.

[0006] The PCB board is connected to a charging and discharging chip, the output end of the charging interface is connected to the input end of the charging control circuit of the charging and discharging chip, and the output end of the charging control circuit of the charging and discharging chip is connected to a rechargeable battery, thereby charging the rechargeable battery. The rechargeable battery, the normally open contact of the temperature control switch, the discharge protection circuit of the charging and discharging chip and the LED light source are sequentially connected in series in a loop.

[0007] The PCB board is provided with a battery holder, and the rechargeable battery is a rechargeable button battery. The rechargeable button battery is placed in the battery holder, and the positive and negative poles of the rechargeable button battery are correspondingly connected to the positive and negative pole connection terminals in the battery holder.

[0008] The PCB board is a double-sided PCB board, the battery holder and the charging and discharging chip are both arranged on the bottom surface of the PCB board, and the charging interface, temperature control switch and LED light source are all arranged on the top surface of the PCB board.

[0009] The LED light source is a SMD LED lamp bead.

[0010] Advantages of this utility model:

[0011] (1) The present invention is applicable to some devices that use temperature sensing technology to realize temperature warning, such as temperature sensing water cups. It does not need to collect and display the full temperature. When the temperature reaches the set threshold temperature, the LED power supply link is closed and turned on, so that the LED lights up to warn the drinker to drink carefully and avoid burns. The temperature control switch adopts a normally open contact type with zero static power consumption, which is environmentally friendly and energy-saving, and greatly improves the service life of the temperature sensing luminous glass water cup.

[0012] (2) The utility model is provided with a charge and discharge chip, which has overcharge and over-discharge functions, and overcurrent short circuit functions, which can prevent the button rechargeable battery from being overcharged and over-discharged, and extend the service life of the button rechargeable battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a top-down axial perspective view of the present invention.

[0014] Figure 2 It is a bottom-view axonometric perspective view of the present invention.

[0015] Figure 3 It is a circuit diagram of the present utility model.

[0016] Figure numerals: 1-PCB board, 2-charging interface, 3-charging and discharging chip, 31-charging control circuit, 32-discharging protection circuit, 4-rechargeable button battery, 5-temperature control switch, 6-chip LED lamp bead, 7-battery holder. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] See Figure 1-Figure 3, a standby zero-power LED temperature sensing display device, comprising a PCB board 1, a charging interface 2, a charging and discharging chip 3, a charging button battery 4, a temperature control switch 5 and a patch-type LED lamp bead 6 connected to the PCB board 1, the PCB board 1 is a double-sided PCB board, a battery holder 7 and a charging and discharging chip 3 are provided on the bottom surface of the PCB board 1, the charging button battery 4 is placed in the battery holder 7, the positive and negative poles of the charging button battery 4 are correspondingly connected to the positive and negative connection terminals in the battery holder 7, the charging interface 2, the temperature control switch 5 and the patch-type LED lamp bead 6 are all arranged on the top surface of the PCB board 1, the output end of the charging interface 2 is connected to the input end of the charging control circuit 31 of the charging and discharging chip 3, and the output end of the charging control circuit 32 of the charging and discharging chip 3 is connected to the charging button battery 4, thereby charging the charging button battery 4, the charging button battery 4, the normally open contact of the temperature control switch 5, the discharge protection circuit 32 of the charging and discharging chip 3 and the patch-type LED lamp bead 6 are connected in series in sequence.

[0019] When the temperature control switch 5 detects that the temperature exceeds the set temperature threshold, the normally open contact of the temperature control switch 5 is connected, and the chip-type LED lamp bead 6 is powered and lights up (red) and flashes, providing a warning function. When the temperature control switch 5 detects that the temperature does not exceed the set temperature threshold, the normally open contact of the temperature control switch 5 remains disconnected, and the chip-type LED lamp bead 6 is in an open circuit and is not illuminated. Because the temperature control switch 5 uses a normally open contact type, the standby power consumption is zero, which is energy-saving and has a longer service life.

[0020] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A standby zero-power LED temperature display device, characterized by: The invention comprises a PCB board, a charging interface connected to the PCB board, a rechargeable battery, a temperature control switch and an LED light source. The charging interface is connected to the rechargeable battery to charge the rechargeable battery. The rechargeable battery, the normally open contact of the temperature control switch and the LED light source are connected in series in a circular manner.

2. The LED temperature display device with zero standby power consumption according to claim 1, characterized in that: The PCB board is connected to a charging and discharging chip, the output end of the charging interface is connected to the input end of the charging control circuit of the charging and discharging chip, and the output end of the charging control circuit of the charging and discharging chip is connected to a rechargeable battery, thereby charging the rechargeable battery. The rechargeable battery, the normally open contact of the temperature control switch, the discharge protection circuit of the charging and discharging chip and the LED light source are sequentially connected in series in a loop.

3. The LED temperature sensing display device with zero standby power consumption according to claim 1, characterized in that: The PCB board is provided with a battery holder, and the rechargeable battery is a rechargeable button battery. The rechargeable button battery is placed in the battery holder, and the positive and negative poles of the rechargeable button battery are correspondingly connected to the positive and negative pole connection terminals in the battery holder.

4. The LED temperature sensing display device with zero standby power consumption according to claim 1, characterized in that: The PCB board is a double-sided PCB board, the battery holder and the charging and discharging chip are both arranged on the bottom surface of the PCB board, and the charging interface, temperature control switch and LED light source are all arranged on the top surface of the PCB board.

5. The LED temperature sensing display device with zero standby power consumption according to claim 1, characterized in that: The LED light source is a SMD LED lamp bead.

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