Blind Slat Electric Field Insulation for Insect Blocking

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Solution Overview

Problem

Conventional insect protection methods, such as insect screens and electronic deterrents, are cumbersome, ineffective, or associated with health risks, while existing electric field systems for mosquito deterrence in venetian blinds are prone to malfunctions and safety hazards.

Innovation Solution

A shading device with movably mounted louvers that generate an electric field between adjacent louvers by applying alternating voltage potentials to insulated conductors, ensuring the field deters insects without causing harm, and is designed to be safe and effective in various weather conditions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If voltage-carrying conductors are installed in slats to create electric fields for insect protection, then insect repellency is improved, but electrical safety deteriorates due to exposed conductors

Engineering Contradiction:
Improveinsect intrusionVSAvoidelectrical safety
Core Design Contradiction:
Object-affected harmful factorsVSReliability

Solution Approach 1:

The patent applies insulation coating (a thin film layer) over the voltage-carrying conductors in the slats. This insulation layer acts as a protective barrier that prevents direct contact with users while allowing the electric field to function for insect repellency. The coating transforms the exposed conductor into a safe, enclosed structure that maintains both electrical functionality and safety.

Inventive Principle:
Principle #30Flexible shells and thin films

2Adaptability or versatility

If conductors are exposed in slats for electric field generation, then electrical functionality is improved, but manufacturing complexity increases due to insulation requirements

Engineering Contradiction:
Improveelectric field functionalityVSAvoidinsulation processing
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The patent merges the conductor and insulation into a single integrated component structure. The insulation coating is applied directly to the conductors during manufacturing, creating a pre-assembled insulated conductor unit that is then installed in the slats. This merging approach reduces the number of separate manufacturing steps and simplifies the overall production process.

Inventive Principle:
Principle #5Merging (Combining)

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 system effectively deters insects without killing them, is safe from short circuits and electric shocks, and can be retrofitted to existing shading devices, providing effective insect protection with minimal aesthetic impact.

Implementation Method 1

when voltage is applied between adjacent slats (1), an electric field is formed which prevents insects from moving through the intermediate openings

Methodology Applied
Scientific EffectElectric field: Electric Field

Data Source

PatentEP4530431B1Shading device
Publication Date: 2026.04.29 REFLEXA WERKE ALBRECHT
  • EP4530431B1 patent drawingFigure 1~4
  • EP4530431B1 patent drawingFigure 5
  • EP4530431B1 patent drawingFigure 6

AI summary

A shading device, in particular a Venetian blind or a roller blind, for shading and/or closing a building opening, comprising at least a plurality of slats (1), wherein the slats (1) are each movably mounted in at least one lateral guide rail by means of guide pins (4) and are movable up and down, intermediate openings are present between adjacent slats (1) when the slats (1) are at least partially lowered, and the slats (1) each have at least one separate live conductor (5.0, 5.1), wherein the conductors (5.0, 5.1) can be alternately supplied with a first voltage potential and a second voltage potential, such that when a voltage is applied, an electric field is formed between adjacent slats (1) which prevents insects from moving through the intermediate openings. The invention is characterized in that at least the conductors (5.1) whose voltage potential differs from ground, and which have insulation. A building control/automation system for controlling and linking various building facilities, as well as a building, at least comprising at least one shading device and at least one building control/automation system.