Core Viewpoint - The article discusses the evolving significance of the car cigarette lighter socket, highlighting its original purpose and modern utility beyond smoking, emphasizing its role in powering various electronic devices in vehicles [4][14][34]. Original Function of the Cigarette Lighter Socket - The car cigarette lighter, also known as the "cigar head," serves as a power expansion device, providing multiple power outlets from the car's original socket, primarily for powering car electronics and safe power extraction [7][8]. - Originally designed for lighting cigarettes, the socket has been a standard feature in cars to mitigate safety risks associated with using lighters in vehicles [11][24]. Modern Significance of the Cigarette Lighter Socket - Despite its declining use for smoking, the cigarette lighter socket remains essential for powering devices that require 12V DC, such as dash cams and car refrigerators, which USB ports cannot adequately support [16][24]. - The socket can also be used with an inverter to convert 12V, 24V, or 48V DC to 220V AC, allowing the use of standard household appliances in vehicles [18][19]. - It provides power for various devices during road trips, including car refrigerators, coffee machines, and even for charging laptops, enhancing the travel experience [19][20]. - In emergencies, the socket can power devices like tire inflators and medical equipment, showcasing its versatility [21][22][24]. Safety and Usage Guidelines - While the cigarette lighter socket is versatile, it is crucial to use it safely to avoid potential hazards, such as overloading and damaging the vehicle's electrical system [27][30]. - Recommendations include using chargers with overload protection, covering the socket when not in use, and avoiding high-power devices when the vehicle is parked for extended periods [27][28][29]. Industry Perspective on the Cigarette Lighter Socket - The transition to USB-C or other modern interfaces is not straightforward for car manufacturers due to the need for redesigning the vehicle's electrical system, which could increase costs [32]. - Some manufacturers have rebranded the socket as a "car power socket," retaining its shape while enhancing safety features, indicating a trend towards modernization while maintaining functionality [33]. - The continued relevance of the cigarette lighter socket is evident, especially as diverse travel scenarios become more common, suggesting its potential for further development in terms of power output and smart control [34].

Core Viewpoint - The article discusses the multifunctionality of the car cigarette lighter socket, highlighting its evolution from a smoking accessory to a versatile power source for various electronic devices in vehicles [1][5][18]. Group 1: Original Functionality - The car cigarette lighter socket was originally designed for lighting cigarettes, providing a 12V DC power source for car electronics [3][5]. - It has been a standard feature in vehicles to mitigate safety risks associated with using lighters in cars, especially in hot weather [5][7]. Group 2: Current Uses - Despite the decline in smoking, the cigarette lighter socket remains essential for powering devices like dash cams and car refrigerators, which require 12V DC [7][9]. - It can also be used with an inverter to convert 12V or 24V DC to 220V AC, allowing the use of standard household appliances in vehicles [9][11]. Group 3: Safety and Usage Guidelines - Users are advised to choose chargers with overload protection to prevent damage to the vehicle's electrical system [12]. - It is recommended to use dust caps when the socket is not in use to prevent debris from entering [13]. - Avoid connecting high-power devices when the vehicle is parked for extended periods to prevent battery drain [14][15]. Group 4: Industry Perspective - The transition from traditional cigarette lighter sockets to USB ports is not straightforward due to the need for redesigning vehicle electrical systems, which can be costly [17]. - Some manufacturers have adapted the cigarette lighter socket into a "car power socket" with enhanced safety features, indicating a trend towards maintaining this interface in modern vehicles [17][18].