Water-Resistant Lamp Module with Integrated Solar and Wireless Charging

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Solution Overview

Problem

Existing consumer products, such as lamps, are not designed for longevity and often require plug-in chargers, which compromise water-resistance when used in humid environments, and solar and wireless charging systems are inefficiently integrated, leading to uneven weight distribution and instability.

Innovation Solution

A module with a water-resistant housing that integrates a solar panel and charging coil on the same exterior face for simultaneous solar and wireless charging, allowing for a compact design and easy component replacement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If solar panel and charging coil are arranged on different parts of the device, then both solar and wireless charging can be enabled, but the device size increases and weight distribution becomes uneven causing instability

Engineering Contradiction:
Improvecharging capabilityVSAvoiddevice stability
Core Design Contradiction:
Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The patent merges the solar panel and charging coil into the same housing space, with the solar panel positioned on the exterior face and the charging coil located inside the housing adjacent to the solar panel. This integration allows both solar and wireless charging functions to coexist without requiring separate external surfaces, thereby maintaining device compactness and balanced weight distribution while ensuring stability.

Inventive Principle:
Principle #5Merging (Combining)

2Volume of moving object

If plug-in chargers are used to minimize device size, then device compactness is improved, but water-resistance is compromised when used in humid environments

Engineering Contradiction:
Improvedevice sizeVSAvoidwater-resistance
Core Design Contradiction:
Volume of moving objectVSReliability

Solution Approach 1:

The patent implements self-service charging through integrated solar and wireless charging capabilities that do not require external plug-in connections. The solar panel captures sunlight and the charging coil enables wireless power transfer, both of which can occur through the housing without compromising the seal integrity. This eliminates the need for removable plugs that would compromise water-resistance, allowing the device to maintain both compact size and reliable water-protection.

Inventive Principle:
Principle #25Self-service

3Volume of moving object

If solar panel is arranged on exterior face for wireless charging, then device compactness is improved, but charging efficiency may be reduced due to space constraints

Engineering Contradiction:
Improvemodule sizeVSAvoidcharging efficiency
Core Design Contradiction:
Volume of moving objectVSProductivity

Solution Approach 1:

The patent utilizes the interior space of the housing to position the charging coil in a different spatial dimension relative to the exterior solar panel. By arranging the charging coil inside the housing adjacent to the solar panel rather than requiring additional external surface area, the design achieves compactness while maintaining effective charging alignment. The solar panel remains on the exterior face for optimal sunlight exposure, while the internal coil positioning enables efficient wireless energy transfer through the housing wall.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The module ensures water-resistant operation indoors and outdoors, with adjustable light intensity and easy component access, extending product lifespan and adaptability to various environments.

Implementation Method 1

The solar panel is connected to and configured for charging the rechargeable battery

Methodology Applied
Scientific EffectSolar energy conversion: Photovoltaic Effect

Implementation Method 2

a charging coil connected to and configured for charging the rechargeable battery when exposed to an external charger unit

Methodology Applied
Scientific EffectElectromagnetic induction: Electromagnetic Induction

Data Source

PatentEP4585850A1A module and lamp comprising said module, a method of charging the lamp, and a method of separating said module
Publication Date: 2025.07.16 HOUE APS
  • EP4585850A1 patent drawingFigure 1a~1c
  • EP4585850A1 patent drawingFigure 2
  • EP4585850A1 patent drawingFigure 3

AI summary

The present invention relates to a module (1) with a water-resistant housing (2) comprising a transparent member (3). Inside said housing (2) the module comprises a light source (10) arranged to emit light through said transparent member (3), a rechargeable battery (20) for powering said light source (10), a controller (30) for controlling the light intensity of the light source (10), and a charging coil (40) connected to and configured for charging the rechargeable battery (20) when exposed to an external charger unit (45). Module (1) comprises a solar panel (50) arranged adjacent to the charging coil (40) and defining an exterior face of the module (1). The solar panel (50) is connected to and configured for charging the rechargeable battery (20). The invention further relates to a lamp (60) comprising said module (1), a part (5) of the module (1), a method (100) of recharging said lamp (60), and a method (500) of replacing wearing components of the module (1).