There is no uniform fixed size for solar projection lights, and the general rule is: the greater the rated power, the greater the

volume of the whole machine. Compared with the common commercial garden lamp, the photovoltaic model has its own

energy storage battery and photovoltaic supporting structure, and its body is slightly larger. The size of household lamps is

mainly determined by three hardware:

1. Heat dissipation structure of lamp body: the higher the power and the denser the arrangement of household lamp beads,

   the higher the heat dissipation demand, the thicker and wider the heat dissipation cavity, and the greater the thickness of

   the lamp body, so as to avoid the aging and light decay of lamp beads caused by outdoor sun exposure at home;

2. Structure of lamps: it is divided into two types: integrated and split. Household split design is preferred. Photovoltaic panels

   are externally and independently installed. The lamp holder is lightweight and compact, which is suitable for narrow point

   installation of courtyard walls, entrance doors and small courtyard walls. The installation is beautiful and the bearing

   threshold is lower.

3. Built-in energy storage battery: it can meet the needs of household lighting for 12-16 hours at night. The larger the

   capacity, the more internal space will be occupied, and the volume of integrated household projection lamp will increase

   accordingly.

Sub-scene selection criteria

1. Courtyard global lighting: 60-100W household model is preferred, the lighting coverage area is 40-80m2, and the light

   is soft and floodlight, giving consideration to both traffic lighting and courtyard atmosphere lighting;

2. Lighting of outdoor courtyards and gardens: IP65 dustproof and waterproof grade is preferred, which is suitable for daily

   rain and sun exposure, weather resistance and durability, and is suitable for outdoor use at home all year round;

3. Lighting at the entrance and roadway: it is preferred to bring human body induction, which will automatically highlight

   when people come, and no one will stand by with low power, saving electricity and ensuring the safety of home travel;

4. Shady buildings and trees shelter the courtyard: increase the area of photovoltaic panels and upgrade large-capacity

   batteries to make up for the lack of light and ensure stable lighting at night.

Relying on years of industry cultivation and technology precipitation, Guangdong Guangyun Lighting Co., Ltd. is a

comprehensive high-tech lighting enterprise integrating product research and development, large-scale production, global

sales and professional after-sales. The company always adheres to the core business philosophy of "quality as the foundation

and customer as the center", and provides customers with high-quality photovoltaic lighting products and supporting

solutions with strict production standards and perfect service system. This paper systematically explains the professional

selection criteria of outdoor solar projection lights from five core dimensions.