LED Module with Dual Light Exit Surfaces for Emergency Lighting

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Solution Overview

Problem

Existing LED-based lighting systems for emergency lighting require separate modules that are costly and inefficient in terms of installation space, as they need to be activated only in emergency situations, which is not optimal for building evacuation and safety.

Innovation Solution

An LED module with an integrated emergency light function that can switch between two different light exit surfaces based on operating states, allowing for selective activation of LEDs for continuous or emergency lighting patterns, using separate electrical connections and power sources to optimize energy usage and illumination patterns.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If separate LED modules are used for emergency lighting, then the emergency lighting function can be provided, but the cost and installation space requirements increase

Engineering Contradiction:

Improveemergency lighting functionVSAvoidinstallation space

Core Design Contradiction:

ReliabilityVSArea of stationary object

Solution Approach 1:

The patent combines the emergency lighting function with the normal lighting LED module by providing a second light-emitting surface on the same module. This merging eliminates the need for separate emergency lighting modules, reducing installation space and cost while maintaining the emergency lighting function.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The LED module is designed to perform multiple functions: normal lighting through the first light-emitting surface and emergency lighting through the second light-emitting surface. This multi-functionality allows a single module to replace what would traditionally require separate dedicated emergency lighting devices.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

If separate LED modules are used for emergency lighting, then the emergency lighting function can be provided, but the cost increases

Engineering Contradiction:

Improveemergency lighting functionVSAvoidcost

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

Inventive Principle:

Principle #5Merging (Combining)

3Illumination intensity

If all LEDs are activated in emergency mode, then adequate illumination is provided, but the energy consumption increases and duration decreases

Engineering Contradiction:

Improveillumination along escape routeVSAvoidenergy consumption

Core Design Contradiction:

Illumination intensityVSUse of energy by moving object

Solution Approach 1:

The patent segments the LED array into different groups that can be selectively activated. In emergency mode, only specific LED groups corresponding to the second light-emitting surface are activated, rather than all LEDs, thereby reducing energy consumption while providing adequate illumination for escape routes.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent applies local quality by directing light emission specifically through the second light-emitting surface in emergency mode, which is optimized for escape route illumination. This localized activation provides targeted illumination where needed most while conserving energy compared to activating all LEDs.

Inventive Principle:

Principle #3Local quality

4Adaptability or versatility

If different LED groups are activated for different operating states, then selective lighting patterns can be produced, but the device complexity increases

Engineering Contradiction:

Improvelighting pattern selectionVSAvoidcontrol structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The control device integrates multiple functions into a single unit: it controls both normal lighting through the first surface and emergency lighting through the second surface. This merged control approach provides versatile lighting pattern selection without proportionally increasing device complexity, as the same control unit manages both operating states.

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

Enables efficient use of LED modules for both normal and emergency lighting scenarios, reducing the number of modules required and extending emergency lighting duration while ensuring adequate illumination along escape routes.

Implementation Method 1

An LED module with an integrated emergency lighting function according to one embodiment comprises a plurality of LEDs and is configured for connection to a control gear for the controlled activation of the plurality of LEDs

Methodology Applied

Scientific EffectLight-emitting diode (LED): Light Emitting Diode

Data Source

PatentEP2835031B1LED module with integrated emergency light function, lighting system, and method for operating an LED module with integrated emergency light function

Publication Date: 2021.08.18 TRIDONIC GMBH & CO KG

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AI summary

In a method for operating an LED module (20) with integrated emergency light function and having a plurality of LEDs, a group of LEDs (31) is activated in a normal operating state in such a way that light is emitted by a first light exit surface of the LED module (20). In an emergency light operating state, one part (33) of the LEDs belonging to the group (31) is activated in such a way that light is emitted by a second light exit surface of the LED module (20), the first light exit surface and the second light exit surface having different shapes.