In electronic devices, infrared emission and reception tubes are indispensable components. Whether it's remote control, security monitoring, or industrial automation, these small devices play a crucial role. However, their sensitivity to the environment requires us to provide additional protection, especially waterproof and moisture-proof treatment, to ensure their stable operation.

Basic Structure of Infrared Transmitting and Receiving Tube

Infrared transmitting and receiving tubeIt usually consists of the following parts: light emitting diodes (LEDs), photodiodes, photoresistors or phototransistors, etc. LEDs are responsible for emitting infrared signals, while other components are used to receive signals and convert them into electrical signals. In order to achieve waterproofing and moisture resistance, we need to specially design the packaging structure and materials of these components.

Why is it necessary to be waterproof and moisture-proof?

Moisture and humidity are the archenemies of electronic components. Water molecules can cause short circuits in circuits, corrode metal components, and affect electrical performance. Moisture will accelerate the aging of components, reduce the reliability and lifespan of equipment. Therefore, ensuring the waterproof and moisture-proof performance of infrared emission and reception tubes is crucial.

Selection of packaging materials

Choosing the appropriate packaging material is a crucial step in improving waterproof and moisture-proof performance. Common packaging materials include epoxy resin, silicone, and polyurethane. These materials not only effectively isolate moisture, but also have good thermal stability and chemical corrosion resistance. For example, silicone is often used for moisture-proof packaging of high-end electronic products due to its excellent elasticity and sealing properties.

Structure Design

Sealed casing: By designing a completely enclosed casing to protect internal components. The shell is usually injection molded with plastic and sealed with gaskets at the interface to prevent moisture from seeping in through the gaps.

Sealing technology: For some devices that cannot be completely sealed, sealing technology can be used. Pour liquid epoxy resin or silicone into the interior of the equipment, and after curing, form a strong barrier to prevent moisture from entering.

Breathable membrane: In order to prevent the difference in internal and external air pressure caused by temperature differences, a breathable membrane can be installed on the shell. This microporous material allows air circulation, but does not allow water droplets to pass through, thus maintaining a balanced state inside the device.

Coating protection: Applying a layer of waterproof and moisture-proof coating on the surface of the circuit board is also an effective method. This coating can add an additional protective layer without affecting the heat dissipation of electronic components.

Practical application cases

In smart home systems, many remote controls and sensors need to be exposed to outdoor environments, such as doorbell buttons, garage door openers, etc. If these devices do not have good waterproof and moisture-proof performance, they are easily corroded by rainwater, leading to functional failure. By applying the above measures, manufacturers can greatly improve the durability and user satisfaction of these products.

test and verification

To ensure the effectiveness of waterproof and moisture-proof design, strict testing is required. This includes but is not limited to immersion tests, humidity cycling tests, and high temperature and high humidity tests. Only after passing these tests can the product be recognized as having reliable waterproof and moisture-proof capabilities.

conclusion

With the advancement of technology and the increasing demand for product quality from consumers, the waterproof and moisture-proof structural design of infrared emission and reception tubes has become increasingly important. Through reasonable material selection and structural design, combined with advanced manufacturing processes, we can effectively extend the service life of these key components and improve the stability and reliability of the overall system. For any design engineer involved in electronic devices, this is an important link that cannot be ignored.