Hair dryer having photosensitive self-protection function

Abstract

A hair dryer having a photosensitive self-protection function, comprising a hair dryer body (1). An air blowing assembly and a heating assembly are provided in the hair dryer body (1), the hair dryer body (1) is provided with an air inlet end and an air outlet end (11), a photosensitive element (2) is provided at the air outlet end (11), and the photosensitive element (2) is connected to a circuit of the heating assembly and can control power-on and power-off of the heating assembly; and when the hair dryer is used in an enclosed environment, the photosensitive element (2) can sense light change, thereby controlling the hair dryer to automatically stop heating or shut down, either immediately or with a delay.

Description

A hair dryer with photosensitivity self-protection function Technical Field

[0001] The utility model relates to the technical field of hair dryers, in particular to a hair dryer with a photosensitivity self-protection function. Background Art

[0002] Traditional hair dryer designs use NTC (thermistor), thermostat, or thermal fuse to monitor and regulate the device's temperature to prevent overheating. These components are effective in protecting the device from damage under normal operating conditions. However, they may have limitations when it comes to detecting and responding to abnormal operating conditions.

[0003] For example, an NTC, a temperature-sensitive component typically installed inside a device, controls the current flow by changing its resistance with temperature, thereby regulating heat generation. When a user blows a hair dryer into a relatively enclosed space, such as socks or shoes, the flow of hot air from outside may be obstructed, leading to heat accumulation. NTCs struggle to directly sense external temperatures and require time to detect internal temperature changes. Furthermore, if the temperature rises very quickly, the NTC may not be able to respond quickly.

[0004] Similarly, thermostats and thermal fuses are designed to disconnect circuits when a certain temperature threshold is reached, preventing overheating. However, they are typically designed to respond to a temperature rise within the device, rather than a localized temperature rise caused by an external obstruction. This means that if a hair dryer is used to dry socks or shoes and the airflow is blocked, these safety measures may not be triggered immediately.

[0005] Long-term abnormal use, such as using a hair dryer for inappropriate purposes, may not only cause the NTC, thermostat and thermal fuse to fail to respond in time, but may also cause other components such as motors and plastic parts to overheat, which may further cause deformation, melting and even fire, posing a major safety hazard.

[0006] Therefore, it is necessary to further improve and perfect the existing technology to overcome these shortcomings, and the present invention is made based on this situation.

[0007] Utility Model Content

[0008] The utility model aims to overcome the deficiencies of the prior art and provide a hair dryer with a light-sensitive self-protection function, which is safer and more reliable. The hair dryer can automatically stop heating or shut down when it is improperly used and blows into a closed environment.

[0009] The utility model is realized through the following technical solutions:

[0010] In order to solve the above technical problems, the utility model provides a hair dryer with a photosensitivity self-protection function, including a hair dryer body, wherein a blowing assembly and a heating assembly are arranged in the hair dryer body, and the hair dryer body is provided with an air inlet end and an air outlet end, and a photosensitive element is provided at the air outlet end, and the photosensitive element is connected to the circuit of the heating assembly and can control the power on and off of the heating assembly; when the hair dryer is used in a closed environment, the photosensitive element can sense the light changes, thereby controlling the hair dryer to automatically stop heating or shut down immediately or with a delay.

[0011] In order to further solve the technical problem to be solved by the present invention, the present invention provides a hair dryer with a photosensitivity self-protection function, wherein the photosensitive element includes a photoresistor.

[0012] In order to further solve the technical problem to be solved by the utility model, the utility model provides a hair dryer with a photosensitive self-protection function, in which an installation groove is provided on the end face of the air outlet end, a light-transmitting protective shell is removably installed in the installation groove, and the photosensitive element is arranged in the protective shell.

[0013] Compared with the prior art, the utility model has the following advantages:

[0014] This utility model addresses the risks associated with improper user use. A photosensitive element is installed at the air outlet of the hair dryer body. This element senses ambient light to control the power on and off of the heating component. If the user improperly uses the hair dryer to dry shoes or in other enclosed environments, the photosensitive element can sense the change in light and automatically stop heating or shut down the product immediately or with a delayed delay. This design prevents safety risks such as overheating of the motor and plastic components, which can cause deformation, melting, and even fire, caused by improper use of the hair dryer. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings, wherein:

[0016] Figure 1 is a schematic diagram of the three-dimensional structure of the utility model;

[0017] FIG2 is an exploded schematic diagram of the photosensitive element. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0019] A hair dryer with a photosensitivity self-protection function as shown in Figures 1 and 2 includes a hair dryer body 1, wherein a blowing assembly and a heating assembly are provided in the hair dryer body 1, and the hair dryer body 1 is provided with an air inlet end and an air outlet end 11, and a photosensitive element 2 is provided at the air outlet end 11, and the photosensitive element 2 is connected to the circuit of the heating assembly and can control the power on and off of the heating assembly. This hair dryer with a photosensitivity self-protection function is an innovative design, which enhances the safety performance of the product by adding a photosensitive element 2 at the key part of the hair dryer (the air outlet end 11). In this design, the photosensitive element 2 plays the role of a safety monitor, which is closely connected to the circuit of the heating assembly.

[0020] More specifically, the present invention introduces an intelligent safety protection mechanism by adding a light-sensing element 2 to the hair dryer. This system aims to address the safety deficiencies of conventional hair dryers, particularly for users who may unconsciously use the hair dryer incorrectly.

[0021] The addition of the photosensitive element 2 provides the hair dryer with an intelligent sensing function. It usually uses the characteristics of light-sensitive elements such as photoresistors—that is, their resistance value changes under different lighting conditions—to monitor the light intensity in the use environment. The details are as follows:

[0022] When the hair dryer is in normal use, the environment facing the air outlet 11 is usually open and has sufficient light. At this time, the light intensity detected by the photosensitive element 2 will remain within a normal range, and the heating component can operate normally.

[0023] However, if the hair dryer is used improperly, such as drying shoes or socks or in other enclosed spaces where the light is typically dim, the photosensitive element 2 will sense this abnormal change in light. It will react quickly, with a change in its resistance value activating a control mechanism connected to the heating element circuit, thereby cutting off or limiting the current flow to the heating element, automatically stopping heating or shutting down the unit completely, either immediately or within a specified timeframe, as required.

[0024] This design effectively enhances the hair dryer's self-protection capabilities, proactively preventing abnormal usage before it occurs, reducing the risk of overheating that could cause melted plastic, motor damage, or even fire. Furthermore, this automatic stop feature helps protect users from potential electrical injuries and helps extend the hair dryer's lifespan.

[0025] More specifically, the light-sensitive element 2 is preferably a photoresistor. Typically, a photoresistor is very sensitive to light; the stronger the light, the lower its resistance. As the light intensity increases, the resistance rapidly decreases; in the absence of light, it exhibits a high resistance state. Therefore, in the present invention, if the air outlet end 11 of the hair dryer body 1 is inserted into a closed environment (such as a sock or shoe), the resistance of the light-sensitive element 2 (i.e., the photoresistor) will rapidly increase due to the low or even no light in the closed environment, thereby disconnecting the heating component and causing the hair dryer body 1 to stop heating or shut down completely.

[0026] It is worth noting that the photosensitive element 2 can also use other photosensitive devices in addition to the aforementioned photoresistor. To enhance the safety performance of the hair dryer, the photosensitive element 2 can use various photosensitive devices to replace or enhance the function of the photoresistor. In addition to the common photoresistor, other photosensitive devices can also be used to sense the presence and intensity of light, such as photodiodes, phototransistors, and photosensors.

[0027] A photodiode is a device whose conductivity changes with changes in light intensity. By detecting changes in the current flowing through the diode, ambient light conditions can be determined. A phototransistor, on the other hand, increases its conductivity when its base is illuminated, allowing it to detect specific light intensities. A photosensor, on the other hand, is a more complex device that converts received light intensity into an electrical signal and is often used in applications requiring precise control.

[0028] In the present invention, a photosensor can be combined with a control switch. When the photosensor detects light, the electrical signal it generates triggers the control switch. This switch, which can be a relay, transistor switch, or other electronic switch, controls the power supply to the hair dryer's heating element based on the signal from the photosensor. For example, when the light intensity detected by the photosensor falls below a preset threshold, the control switch disconnects the power supply to the heating element, thereby stopping heating and preventing any danger.

[0029] The key advantage of this design is its ability to provide more complex and sophisticated control. The control switch can be quickly switched based on the output signal of the photosensor, and different response thresholds or logic can be set to suit different usage scenarios and safety requirements. Furthermore, due to the use of electronic control, this system can be integrated with other smart home systems for remote monitoring and control, further improving user convenience and safety.

[0030] More specifically, in the design of modern electrical products, user convenience and product safety are highly valued. To better achieve these two goals, the present invention has carefully designed the air outlet 11. A mounting groove 111 is specifically designed on the end surface of the air outlet 11. The primary function of this mounting groove 111 is to simplify the installation and removal of the protective shell 3.

[0031] The protective cover 3 is a highly light-transmitting component. Its primary function is to provide physical protection for the photosensitive element 2 without affecting its light sensitivity. Designed to be removable, the protective cover 3 can be easily installed in the mounting slot 111 by the user or maintenance personnel, or removed when cleaning or replacing the photosensitive element 2. This design not only simplifies maintenance but also reduces the time and cost of equipment repairs.

[0032] The protective shell 3 can be fixed in the mounting slot 111 by various mechanical connection methods, such as snaps, screws, or other quick connection devices. The choice of these connection methods can be determined based on the product's usage environment and the user's specific needs to ensure that it can remain stable under different operating conditions while maintaining ease of removal and installation.

[0033] Photosensitive element 2 is positioned within protective housing 3. This design protects it from environmental factors like dust and moisture while ensuring its high sensitivity to external light. The position of photosensitive element 2 within protective housing 3 is precisely calculated and designed to maximize the capture and utilization of natural or artificial light.

Claims

1. A hair dryer with a photosensitive self-protection function, characterized in that: It includes a hair dryer body (1). A blowing component and a heating component are provided inside the hair dryer body (1). The hair dryer body (1) is provided with an air inlet end and an air outlet end (11). A photosensitive element (2) is provided at the air outlet end (11). The photosensitive element (2) is connected to the circuit of the heating component and can control the on-off of the heating component. When the hair dryer is used in a closed environment, the photosensitive element (2) can sense the change of light, so as to control the hair dryer to automatically stop heating or shut down immediately or with a delay.

2. The hair dryer with a photosensitive self-protection function according to claim 1, wherein: The photosensitive element (2) includes a photoresistor.

3. The hair dryer with a photosensitive self-protection function according to claim 1 or 2, characterized in that: An installation groove (111) is provided on the end face of the air outlet end (11). A light-transmitting protective shell (3) is detachably installed in the installation groove (111). The photosensitive element (2) is arranged inside the protective shell (3).

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