A mobile phone with a camping light

Abstract

The utility model discloses a kind of mobile phones with camping lamp, including mobile phone body, the camping lamp being connected with mobile phone body, drive module, voltage comparison module, detection module, voltage comparison module is used to receive the input voltage of detection module input voltage comparison module, when input voltage is higher than reference voltage, voltage comparison module will level signal output to main control module;Main control module is used to enable drive module;Detection module is used to detect the temperature of camping lamp;Drive module is accessed to the power supply of mobile phone body, and drive module is used to adjust PWM current according to the temperature of camping lamp.The utility model is installed on mobile phone body by using camping lamp, and the battery power supply of mobile phone is used to power camping lamp, save the space of camping lamp assembly battery, reduce the volume of camping lamp, facilitate carrying, and can be charged at any time, reduce heat output, temperature.

Description

Technical Field

[0001] This utility model relates to the field of camping light mobile phone technology, and in particular to a mobile phone with a camping light. Background Technology

[0002] Today, people's living standards have greatly improved, but work pressure is also increasing, creating a demand for ways for young people to escape the hustle and bustle of the city. Camping is one such way, as it allows people to rediscover and connect with nature, enjoying fresh air and beautiful scenery. Outdoor camping lights are not only used for camping but also for other outdoor activities such as fishing, hiking, and strolling. In these activities, nighttime is the best time to experience and test oneself. A high-performance outdoor camping light can enhance the experience and safety. Outdoor camping lights play a crucial role in wilderness survival; choosing a good outdoor camping light, considering its size, weight, portability, and ease of use, can provide campers with a safer and more comfortable experience.

[0003] Traditional camping lights have problems such as being bulky and heavy, making them inconvenient to move around in; consuming a lot of electricity, making it inconvenient to charge them outdoors or requiring additional power storage equipment; and generating a lot of heat during long-term use, making it difficult to control the temperature. Utility Model Content

[0004] The main purpose of this invention is to propose a mobile phone with a camping light, which aims to solve the problems of traditional camping lights, such as being bulky and heavy and inconvenient to move around, consuming a lot of power and being inconvenient to charge outdoors or requiring additional power storage devices, and generating a lot of heat during long-term use and being unable to control the temperature.

[0005] To achieve the above objectives, this utility model proposes a mobile phone with a camping light, comprising a mobile phone body, a camping light connected to the mobile phone body, a driving module, a voltage comparison module, and a detection module, wherein the mobile phone body includes a main control module; The voltage comparison module is connected to the detection module and the main control module respectively. The voltage comparison module is used to receive the input voltage from the detection module. The main control module is connected to the drive module and is used to enable the drive module. The detection module is connected to the drive module, and the detection module is used to detect the temperature of the camping light; The driving module is connected to the power supply of the mobile phone body, and the driving module is used to adjust the PWM current according to the temperature of the camping lamp.

[0006] In one embodiment, the mobile phone with a camping light further includes a first connector and an FPC flexible flat cable. The camping light includes a connected second connector and an LED light group. The first connector is connected to the driving module and the voltage comparison module respectively. The first connector and the second connector are connected to the FPC flexible flat cable respectively.

[0007] In one embodiment, the driving module includes a driving chip and an inductor. The input terminal of the driving chip is connected to the power supply of the mobile phone body. One end of the inductor is connected to the SW terminal of the driving chip, and the other end of the inductor is connected to the first connector.

[0008] In one embodiment, the driving module includes a first resistor connected to the voltage feedback terminal of the driving chip.

[0009] In one embodiment, the driver chip includes the AW36612A.

[0010] In one embodiment, the voltage comparison module includes a voltage divider circuit and a voltage comparison chip. The voltage divider circuit is connected to the positive voltage input terminal of the voltage comparison chip, and the output terminal of the voltage comparison chip is connected to the main control module.

[0011] In one embodiment, the voltage divider circuit includes a second resistor and a third resistor connected together, and the connection point between the second resistor and the third resistor is connected to the positive voltage input terminal of the voltage comparator chip.

[0012] In one embodiment, the voltage comparator chip includes the LMV331.

[0013] In one embodiment, the detection circuit includes an NTC thermistor connected to the voltage comparison module.

[0014] In one embodiment, the voltage comparison module further includes a first capacitor, a second capacitor, a third capacitor, and a fourth capacitor. The first capacitor and the third capacitor are respectively connected to the positive voltage input terminal of the voltage comparison chip, the second capacitor is connected to the positive power supply terminal of the voltage comparison chip, and the fourth capacitor is connected to the negative voltage input terminal of the voltage comparison chip.

[0015] This invention utilizes a method where the camping light is mounted on a mobile phone and powered by the phone's built-in battery. This saves space by eliminating the need for a separate battery, reducing the size of the camping light, making it more portable, and allowing for convenient charging. The system connects to the mobile phone via a drive module, a voltage comparison module, and a detection module. The voltage comparison module receives the input voltage from the detection module, the main control module activates the drive module, and the detection module monitors the temperature of the camping light. The drive module adjusts the PWM current based on the temperature of the camping light, thereby reducing heat generation and temperature. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of a mobile phone module with a camping light. Figure 2 This is the circuit diagram for the driver module; Figure 3 This is a voltage comparison module circuit; Figure 4 Circuit diagram for a camping light; Figure 5 A schematic diagram of a mobile phone with a camping light; Figure 6 Side view of a camping light; Figure 7 This is a side view of the lampshade.

[0018] Explanation of icon numbers: 1. Mobile phone body; 2. Camping lamp; 3. Driver module; 4. Voltage comparison module; 5. Detection module; 11. Main control module; J503. First connector; 6. FPC flexible cable; J10. Second connector; U502. Driver chip; L501. Inductor; R508. First resistor; U203. Voltage comparison chip; R220. Second resistor; R223. Third resistor; R1001. NTC thermistor; 141. Lamp cover; 142. Locking buckle; 21. LED light group; 24. Circular circuit board; 25. Heat sink aluminum sheet; C217. First capacitor; C218. Second capacitor; C219. Third capacitor; C220. Fourth capacitor.

[0019] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0022] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, if the word "and / or" appears throughout the text, it means including three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0023] This utility model proposes a mobile phone with a camping light 2.

[0024] In the embodiments of this utility model, such as Figure 1 and Figure 5As shown, the mobile phone with a camping light 2 includes a mobile phone body 1, a camping light 2 connected to the mobile phone body 1, a driving module 3, a voltage comparison module 4, and a detection module 5. The mobile phone body 1 includes a main control module 11. The voltage comparison module 4 is connected to both the detection module 5 and the main control module 11. The voltage comparison module 4 receives the input voltage from the detection module 5. When the input voltage is higher than a reference voltage, the voltage comparison module 4 outputs a level signal to the main control module 11. The main control module 11 is connected to the driving module 3 and is used to enable the driving module 3 according to the level signal. The detection module 5 is connected to the driving module 3 and is used to detect the temperature of the camping light 2. The driving module 3 is connected to the power supply of the mobile phone body 1 and is used to adjust the PWM current according to the temperature of the camping light 2. When the temperature of the camping light 2 exceeds a preset value, the current input is reduced.

[0025] This invention utilizes a method where the camping light 2 is mounted on the mobile phone body 1, powered by the phone's built-in battery. This saves space by reducing the size of the camping light 2, making it more portable and allowing for convenient charging. The system connects to the mobile phone body 1 via a drive module 3, a voltage comparison module 4, and a detection module 5. The voltage comparison module 4 receives the input voltage from the detection module 5. When the input voltage is higher than a reference voltage, the voltage comparison module 4 outputs a level signal to the main control module 11. The main control module 11 then activates the drive module 3 based on this level signal. The detection module 5 detects the temperature of the camping light 2, and the drive module 3 adjusts the PWM current according to the temperature. When the temperature of the camping light 2 exceeds a preset value, the current input is reduced, thereby lowering heat generation and temperature.

[0026] This design avoids overheating, ensuring the lifespan of the LED beads and saving power. Furthermore, the circuitry in this embodiment is simple and low-power, and the phone is portable, meeting the lightweight needs of outdoor camping. The camping light 2's on / off function can be implemented with a dedicated physical button or a menu button in the software. Users can operate it by long-pressing a physical button or finding the corresponding camping light 2 menu button in the software's main menu. The phone itself 1 also includes built-in PMU power supply, RF radio frequency, memory, display screen, camera, SIM card slot, TF card slot, FM / BT / WIFI / GPS / NFC, SOS function, USB charging, and other conventional circuits.

[0027] This embodiment perfectly combines a mobile phone with a camping lamp 2, increasing its portability and convenience. It solves the problem of traditional camping lamps being bulky and heavy, making camping trips more convenient. Leveraging the increasing battery capacity of mobile phones (both feature phones and smartphones) and the growing convenience of external power storage devices, it utilizes high-brightness energy-saving LED lights to address the issue of insufficient battery power during extended use. The use of high-brightness energy-saving LED lights makes the light brighter and more energy-efficient. By utilizing the phone's built-in hardware functions such as battery, charging circuitry, power management, and buttons, and further controlling the temperature through software, it surpasses traditional camping lamps which only have hardware and cannot monitor or control temperature or display real-time usage status such as charging and standby power. In addition to traditional physical heat dissipation with attached aluminum heat sinks 25, software is used to adjust the current to maintain the temperature within a suitable range. Temperature control can be preset via software. This embodiment is applicable to both feature phones and smartphones.

[0028] This invention overcomes the shortcomings of traditional camping lights 2, which are inconvenient to carry. It can be turned on and used anytime and anywhere by carrying a mobile phone, which greatly facilitates the lighting during camping. In addition, when the light is not needed, it can provide a supplementary light function for taking pictures in dark environments, illuminating the surrounding environment and making the pictures clearer and brighter. Moreover, this invention has a camping light 2 and a mobile phone, which is convenient to use, has low power consumption, and is highly practical. It is technically feasible, does not increase costs, and is economically feasible, meeting the needs of camping, communication, entertainment and other purposes.

[0029] The mobile phone with camping light 2 also includes a first connector J503 and an FPC flexible flat cable 6. The camping light 2 includes a connected second connector J10 and an LED light group 21. The first connector J503 is connected to the driving module 3 and the voltage comparison module 4 respectively. The first connector J503 and the second connector J10 are connected to the FPC flexible flat cable 6 respectively.

[0030] like Figure 2 As shown, the driving module 3 includes a driving chip U502 and an inductor L501. The input terminal of the driving chip U502 is connected to the power supply of the mobile phone body 1. One end of the inductor L501 is connected to the SW terminal of the driving chip U502, and the other end of the inductor L501 is connected to the first connector J503.

[0031] The driver chip U502 includes the AW36612A. The AW36612A is an adaptive synchronous buck chip that outputs stable power. It uses a miniaturized DFN2×2-6L package, featuring high efficiency and high power density, which helps provide stable output in small spaces, ensuring the reliability and stability of the power supply. It also features a bottom heat dissipation pad. Compared to SOT23, the SOP package has a lower thermal resistance coefficient. The AW36612A has a peak efficiency of up to 93.57%, with a 3%~5% improvement in conversion efficiency under light and medium loads. The AW36612A supports analog dimming and is suitable for scenarios such as LED lighting drivers and facial recognition IR supplementary lighting. The driver chip U502 achieves dimming by changing an internal reference voltage proportional to the PWM duty cycle (within the range of 5% to 100%). The PWM pin is the GPIO port with PWM function of the main control chip. In PWM dimming mode, the LED light will be adjusted according to the preset duty cycle value of PWM. The PWM duty cycle can be adjusted according to actual needs to control the current of the LED light and thus adjust the brightness. This chip has LED open circuit protection, LED+ to GND short circuit protection, overheat protection, and detection resistor open circuit and short circuit protection, which can effectively protect the driver chip U502 from damage under abnormal working conditions.

[0032] The power supply VBAT terminal of the drive module 3 is connected to the VBAT terminal of the mobile phone battery (the power supply voltage to the VBAT terminal of the mobile phone battery is between 3.8V and 4.2V). The VIO28 power supply is provided by the mobile phone PMU power chip, and the power supply of the LED camping light 2 is obtained by connecting to the output terminal of the camping light 2 driver chip U502IC. At the same time, the software can automatically control the output current based on the NTC temperature detection result and the software preset value. For example, when the temperature is higher than +80℃, the PWM duty cycle is activated at 60% to control the current to decrease; when the temperature is lower than +80℃, the PWM duty cycle is activated at less than 60% to control the current to increase, realizing automatic switching control, so that the temperature of the camping light 2 is always kept within the software preset value, avoiding the LED beads from burning out due to excessive temperature and extending the life of the LED light.

[0033] The driving module 3 includes a first resistor R508, which is connected to the voltage feedback terminal of the driving chip U502.

[0034] The driver chip U502 provides power to the LED light. The VIN terminal of the AW36612A is the power input terminal of the driver chip U502, with an operating voltage between 2.7 and 5.5V, connected to the VBAT terminal of the mobile phone battery. The GND of the AW36612A (pins 5 and 7 are ground pins), NC (pin 1) is not connected and is left floating. RUN (pin 2) is the enable control pin, which needs to be selected and connected to the GPIO port with PWM function to enter the PWM analog dimming mode. Controlling RUN (pin 2) turns the camping light 2 on or off, and can adjust the PWM duty cycle to control the output current. The higher the current, the brighter the LED light, and vice versa. SW (pin 4) and FB (pin 6) are the output terminals (which can be used as voltage converters) connected to J503 (15-pin). The ZIF connector is the output terminal. The positive and negative terminals are connected to the positive and negative terminals of the LED light through the FPC flexible cable 6 to light up the LED light. It can output a large current of 1.2A. L501 and C511 are the output inductor L501 and the filter capacitor. The first resistor R508 is the external pull-down feedback resistor used for hardware adjustment of the output current value. The general value is set to 0.2Ω. When there is no PWM dimming requirement, the output current can be changed by changing the resistance value.

[0035] like Figure 3 As shown, the voltage comparison module 4 includes a voltage divider circuit and a voltage comparison chip U203. The voltage divider circuit is connected to the positive voltage input terminal of the voltage comparison chip U203, and the output terminal of the voltage comparison chip U203 is connected to the main control module 11.

[0036] The voltage comparator chip generates an output signal by comparing the input signal with an internal reference voltage. VCC+ (pin 5) is the power supply pin, IN+ (pin 1) and IN- (pin 3) are input terminals connected to VIO28 (2.8V) and GND (pin 2 is the ground pin). The NTC thermistor R1001 is an unknown variable that changes with temperature. For example, if the voltage is 0.5V, the voltage comparator will compare it with the internal reference voltage. If IN+ is greater than IN-, the output is high; otherwise, the output is low. OUT (pin 4) is the output terminal connected to the GPIO terminal of the main control chip. The high and low level changes determine whether to start the camping light 2 LED driver chip U502AW36612A. The RUN (pin 2) of the chip adjusts the PWM duty cycle to regulate the output current. C217 / C218 / C219 / C220 are power input filter capacitors, and R224 is a pull-up resistor for the output GPIO port.

[0037] The voltage comparator chip U203 is an LMV331, a single-channel voltage comparator chip that generates an output signal by comparing the input voltage level with a reference voltage. The LMV331 voltage comparator chip is placed on the mobile phone motherboard, and the NTC thermistor R1001 is connected to the circular circuit board inside the lampshade 141 via an FPC flexible cable 6. Its working principle is to generate an output signal of high or low level by comparing the input signal with the reference voltage. The LMV331 is a low-power, high-precision comparator chip. This voltage comparator chip U203 can operate within a power supply voltage range of 5V to 30V, with an input voltage range of -0.3V to VCC+0.3V, and features reverse connection protection and overvoltage protection.

[0038] Furthermore, the LMV331 features low current consumption and fast response, making it suitable for power-sensitive applications. Its SOT-23-5 package is small, easy to install, and ideal for space-constrained applications. The chip operates over a temperature range of -40°C to +125°C. The LMV331 voltage comparator uses a resistor divider circuit to obtain the voltage values ​​at its IN+ / IN- inputs. When the positive input voltage (IN+) is higher than the reference voltage, the comparator OUT outputs a high level; when the positive input voltage is lower than the reference voltage, the comparator OUT outputs a low level. Similarly, when the negative input voltage (IN-) is higher than the reference voltage, the comparator OUT outputs a low level; when the negative input voltage is lower than the reference voltage, the comparator OUT outputs a high level. Therefore, the LMV331 is used to compare the magnitudes of two input signals to generate control signals.

[0039] The voltage divider circuit includes a second resistor R220 and a third resistor R223 connected together. The connection point between the second resistor R220 and the third resistor R223 is connected to the positive voltage input terminal of the voltage comparator chip U203. The IN+ (pin 1) and IN- (pin 3) of the LMV331 are both voltages obtained by voltage division through the second resistor R220 and the third resistor R223, and are compared with the internal reference voltage. For example, when IN+ (pin 1) is connected to VIO28 (2.8V), a voltage of 0.93V is obtained by voltage division through R220=20KΩ and R223=10KΩ. Similarly, when IN- (pin 3) is connected to VIO28 (2.8V), a voltage obtained by voltage division through R221=20KΩ and the NTC thermistor R1001 is compared with the obtained voltage.

[0040] like Figure 4 , Figure 5As shown, the detection circuit includes an NTC thermistor R1001, which is connected to the voltage comparison module 4. The NTC thermistor R1001 utilizes the characteristic that its resistance decreases as temperature increases to connect to the voltage comparison chip U203. When the positive voltage of the voltage comparison module 4 is higher than the negative voltage, the output terminal OUT of the voltage comparison module 4 detects a pull-up (high-level signal) change. This triggers the main control module 11 by connecting to its GPIO port, and enables the EN pin of the driver chip U502 to adjust the PWM dimming mode to reduce brightness. The EN pin is a pin with PWM functionality. PWM is a digital representation of an analog signal, controlling the ratio of high and low levels (duty cycle) of the signal. Conversely, PWM dimming mode increases brightness.

[0041] The NTC thermistor R1001 is located at the center of the lamp cover 141 for easy reading of the average temperature at the center point. A heat sink 25 is installed under the lamp board, which uses a whole heat sink for large-area heat dissipation and electronic temperature control for dual protection. By using physical cooling and electronic temperature control, the temperature is precisely controlled, which improves the lifespan of the lamp beads.

[0042] The NTC thermistor R1001 is connected in series with the negative voltage (IN-) input terminal of the LMV331 voltage comparator chip U203. As the LED light operates, the temperature inside the lamp cover 141 rises, causing a change in the resistance of the NTC thermistor R1001 located in the center of the lamp cover 141, thus generating a change in the input negative voltage (IN-). When the input positive voltage IN+ is greater than the input negative voltage IN-, the OUT output is high. At this time, the software will start PWM to adjust the duty cycle of the AW36612A PWM signal, reducing the output current to a preset value. Because the current is smaller, the LED light will dim. Conversely, when the input positive voltage IN+ is less than the input negative voltage IN-, the OUT output is low. At this time, the software will start PWM to adjust the duty cycle of the AW36612A PWM signal, increasing the current to a preset value. Because the current is larger, the LED light will brighten.

[0043] like Figure 3 As shown, the voltage comparison module 4 further includes a first capacitor C217, a second capacitor C218, a third capacitor C219, and a fourth capacitor C220. The first capacitor C217 and the third capacitor C219 are respectively connected to the positive voltage input terminal of the voltage comparison chip U203, the second capacitor C218 is connected to the positive power supply terminal of the voltage comparison chip U203, and the fourth capacitor C220 is connected to the negative voltage input terminal of the voltage comparison chip U203.

[0044] The second capacitor C218 is connected to the positive power supply terminal of the voltage comparator chip U203, which helps to filter out power supply noise and ensure the stability of the power supply of the voltage comparator chip U203, thereby improving the reliability of the overall circuit. The first capacitor C217 and the third capacitor C219 are connected to the positive voltage input terminal of the voltage comparator chip U203, which can effectively filter out high-frequency noise in the input signal, reduce signal interference, and ensure the stability and accuracy of the voltage input. The fourth capacitor C220 is connected to the negative voltage input terminal of the voltage comparator chip U203, which helps to filter noise in the negative input signal, further improving the accuracy and anti-interference capability of the voltage comparator module 4. By using multiple capacitors, fluctuations in the input signal and power supply voltage can be smoothed, thereby improving the accuracy of voltage comparison and avoiding errors caused by power supply or signal fluctuations. The capacitor configuration effectively suppresses the influence of external electromagnetic interference on the voltage comparator chip U203. Especially in noisy environments, this configuration can significantly improve the anti-interference performance of the circuit.

[0045] like Figure 7 As shown, the camping light 2 includes a lampshade 141, which is provided with a latch 142. The lampshade 141 is connected to the mobile phone body 1 via the latch 142, and the lampshade 141 covers the LED light assembly 21. In this embodiment, the lampshade 141 is made of ABS material and has a frosted finish, which makes the light soft and has a floodlight effect, avoiding eye fatigue and discomfort caused by long-term use.

[0046] The lampshade 141 is a white, transparent, arc-shaped design. As an independent structural component, it can be installed on the bottom shell (back of the phone) of the main body 1 using a latch 142, heat fusion, or screws. Because of its arc-shaped design, the lampshade 141 slightly protrudes from the phone surface, allowing light to pass through more easily. The circular circuit board of the LED light group 21 is fixed inside the lampshade 141 and then connected to the main control module 11 of the phone via a 15-pin ZIF connector and an FPC flexible flat cable 6. The circular circuit board of the LED light group 21 has 14 high-brightness LEDs. An annular heat sink is attached below the NTC thermistor R1001, the ZIF connector, and the 14 high-brightness LEDs. The aluminum plate is used for heat dissipation when the LED light is working. Because the camping light 2 needs to be used for a long time, a special heat sink aluminum plate 25 is set under the LED light for physical heat dissipation. The NTC thermistor R1001 is placed in the middle area of ​​the ring light strip, mainly to detect the temperature of the center point of the entire ring LED light area. The change in the temperature of the center point causes the resistance of the NTC thermistor R1001 to change. It is then connected to the voltage comparator circuit of the mobile phone motherboard through the FPC flexible cable 6. After comparison, the result is output to the main control chip. The main control chip controls the PWM pin of the camping light 2 driver chip U502AW36612A to adjust the LED light current.

[0047] LED lights use semiconductor materials to emit light, featuring high brightness and energy efficiency. Their operating voltage is between 2.8V and 3.4V, and each LED draws between 80mA and 100mA of current. Using 14 LEDs connected in parallel draws approximately 1.2A of current, equivalent to a brightness of 300lm, roughly the same as a 30-watt-hour light bulb, achieving a normal illuminance.

[0048] like Figure 6 As shown, the circular circuit board 24 is the built-in circuit board of the lampshade 141, serving as a support for signal transmission and processing. It is installed inside the lampshade 141. The circular heat sink 25 is located below the circular circuit board 24, specifically for heat dissipation during LED operation. The mobile phone body 1, the camping lamp 2 driving circuit, and the camping lamp 2 NTC temperature control circuit are all located on the main circuit board of the mobile phone. The NTC thermistor R1001 and the 14 LED boards are located on the circular circuit board 24 inside the lampshade 141. The circular heat sink is located below the LEDs and is fixed inside the lampshade 141 along with the circular circuit. It is connected to the main circuit board connector via the FPC flexible cable 6. The lampshade 141 is mounted and fixed to the back of the mobile phone, forming a single unit with the mobile phone.

[0049] The curved lampshade 141 is a slightly convex curved lampshade 141 with a frosted surface, which makes the light soft and has a floodlight effect, simulating the light effect of a traditional camping lamp. The lampshade 141 is fixed with latches 142, which are distributed around the edges of the lampshade 141. There are about 4 to 6 latches 142 that are embedded in the bottom of the phone case. It can be fixed to the bottom of the phone case by latches 142, screws, or heat fusion.

[0050] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. For those skilled in the art, this utility model can have various modifications, combinations, and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A mobile phone with a camping light, characterized in that, The device includes a mobile phone body, a camping light connected to the mobile phone body, a driver module, a voltage comparison module, and a detection module. The mobile phone body includes a main control module. The voltage comparison module is connected to the detection module and the main control module respectively, and the voltage comparison module is used to receive the input voltage from the detection module. The main control module is connected to the driver module, and the main control module is used to enable the driver module. The detection module is connected to the drive module, and the detection module is used to detect the temperature of the camping light; The driving module is connected to the power supply of the mobile phone body, and the driving module is used to adjust the PWM current according to the temperature of the camping lamp.

2. The mobile phone with a camping light as described in claim 1, characterized in that, The mobile phone with a camping light also includes a first connector and an FPC flexible flat cable. The camping light includes a connected second connector and an LED light group. The first connector is connected to the driving module and the voltage comparison module respectively. The first connector and the second connector are connected to the FPC flexible flat cable respectively.

3. The mobile phone with a camping light as described in claim 2, characterized in that, The driving module includes a driving chip and an inductor. The input terminal of the driving chip is connected to the power supply of the mobile phone body. One end of the inductor is connected to the SW terminal of the driving chip, and the other end of the inductor is connected to the first connector.

4. The mobile phone with a camping light as described in claim 3, characterized in that, The driving module includes a first resistor, which is connected to the voltage feedback terminal of the driving chip.

5. The mobile phone with a camping light as described in claim 3, characterized in that, The driver chip model includes AW36612A.

6. The mobile phone with a camping light as described in claim 1, characterized in that, The voltage comparison module includes a voltage divider circuit and a voltage comparison chip. The voltage divider circuit is connected to the positive voltage input terminal of the voltage comparison chip, and the output terminal of the voltage comparison chip is connected to the main control module.

7. The mobile phone with a camping light as described in claim 6, characterized in that, The voltage divider circuit includes a second resistor and a third resistor connected together, and the connection point between the second resistor and the third resistor is connected to the positive voltage input terminal of the voltage comparator chip.

8. The mobile phone with a camping light as described in claim 6, characterized in that, The voltage comparator chip includes the LMV331.

9. The mobile phone with a camping light as described in claim 1, characterized in that, The detection module includes an NTC thermistor, which is connected to the voltage comparison module.

10. The mobile phone with a camping light as described in claim 6, characterized in that, The voltage comparison module further includes a first capacitor, a second capacitor, a third capacitor, and a fourth capacitor. The first capacitor and the third capacitor are respectively connected to the positive voltage input terminal of the voltage comparison chip, the second capacitor is connected to the positive power supply terminal of the voltage comparison chip, and the fourth capacitor is connected to the negative voltage input terminal of the voltage comparison chip.

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