2. Vertical signs: Vertical signs are also used for advertising and are widely distributed on streets and building exteriors.
3. Protruding signboard: protrudes from the wall. Except for the back, the rest of the sign can be used for advertising. It is common in commercial streets and shopping malls.
4. Ground column signs: fixed on the ground, with various shapes, including horizontal boards, vertical boards and three-dimensional structures, used for outdoor advertising and instructions.
5. Roof-mounted signs: Signs installed on the roof, commonly in plate and cube shapes, and may be equipped with lighting equipment.
6. Illuminated signs: billboards with built-in night lights, projection lights or other lighting devices to facilitate nighttime visual effects.
7. Unilluminated signboards: Visual billboards that do not require night lighting and rely on their own materials or background reflection.
8. Indoor signs: signs used in indoor environments, such as direction instructions, reception information, etc.
9. Outdoor signboards: billboards placed outdoors, adaptable to the outdoor environment, and have strong weather resistance.
10. Commercial signs: Signs for commercial promotion, commonly found in shops, restaurants and brand chains.
11. Public signs: Signs used in public places to publish information or instructions, such as parks, hospitals, etc.
12. Medals: signs repre senting honors, such as "Excellent Employee", "Certificate of Certification", etc.
13. Navigation sign: A sign indicating directions, pre cautions or reminders, such as road signs and warning signs.
14. Machinery nameplate: A signboard indicating mechanical product information or attributes, usually fixed on the equipment.
15. Smooth signs: Signs with smooth surface treatment and oily coating, with high finish.
16. Signs made of luminous materials: signs made of luminous materials, namely neon lights and other luminous advertising boards.
17. Acrylic signs (acrylic): Signs based on acrylic resin are transparent in texture and have good weather resistance and aesthetics.
18. Metal signs: Signs whose main material is metal are durable and have an industrial feel.
19. Electro-optical panels: Signs made using electronic display technologies such as LED and LCD can be divided into various types and are used for dynamic advertising display.
[Reference source] II、Which night scenes in Xiamen are suitable for photography?