At a glance
| Patent number | CN207425291U (application CN201721377010) |
| Type | China utility model (实用新型) - protects product shape and structure |
| Original title | Portable advertising light box (一种便携式广告灯箱) |
| Patent owner | Guangzhou Yangling Electronic Technology Co., Ltd. |
| Inventors | Li Chan, Tang Zhaoshuang |
| Filing date | 2017-10-23 |
| Grant date | 2018-05-29 |
| Status (China) | Lapsed - terminated for non-payment of annual fees (recorded 2025-10-21) |
| Patent family | Chinese filings only - no US, European, Japanese, PCT or other filings listed |
| Cited by | 6 later documents |
| Source | Google Patents (search for CN207425291U) |
What the claims cover, in plain language
Claim 1 - a portable advertising light box with a portable box, several rotating LED bars, a motor and a controller; the bars sit in the box on the motor shaft and the controller turns them to display content.
Claim 2 - the box has a main body and a removable cover. Claims 3-4 - a spinner on the shaft carrying the bars, made of two or more strip supports or fan-blade supports. Claims 5-10 - further features described in the patent: a support pole, a wireless receiving module, a memory, a GPS module, a power supply with switch and a USB socket.
This is a simplified reading for orientation only. The legal scope is defined by the exact claim wording in the official Chinese document.
What this means for US production
This patent was filed only in China and has lapsed, so it no longer restricts anyone in China either. It has no US or other foreign counterpart.
Before production, keep in mind:
- Other patents may exist. Spinning LED (“hologram fan”) displays are covered by many US patents. Have a freedom-to-operate (FTO) search done by a US patent attorney before volume production.
- Local sign rules. Cities regulate signs on sidewalks and moving or flashing signs; buyers should check where the product will be used.
Customization and manufacturing
What can be customized
| Area | Options |
|---|---|
| Size | Box and image diameter - to be confirmed in design |
| Display | Number of LED bars, LED density, brightness |
| Connectivity | Wi-Fi or Bluetooth app, USB, optional GPS |
| Power | Rechargeable battery, mains adapter |
| Carrying | Pole, ground stand, backpack frame, wall bracket |
| Branding | Box graphics and colors |
Things to plan for (US market)
- FCC - FCC Part 15 for the electronics, plus authorization for any Wi-Fi, Bluetooth or cellular module (or use pre-certified modules).
- Electrical safety - UL-listed adapters and UL testing of the battery pack; lithium batteries also need UN 38.3 transport testing.
- Moving parts - the spinner must be fully guarded so fingers cannot reach it.
- Location data - if GPS data is collected, disclose it to the operator and follow applicable privacy rules.
How a project runs
- Inquiry - size, display resolution, connectivity and quantity.
- Design - spinner, balancing, electronics and app.
- Prototype - working units for image quality and run-time tests.
- Pilot run - small batch with FCC and battery testing.
- Production - volume production, packaging and shipping.
Quantities & timeline
The box and spinner need molds, and the electronics and app need development and certification. Send us your size, display, connectivity, quantity and target price and we will reply with options.
Patent drawings
Drawings reproduced from the public patent document for reference.
