Linear Lamp Support Profile Thermal Separation
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Solution Overview
Problem
Existing linear lights face challenges in heat management, as heat generated by components like operating devices can transfer undesirably to light sources via heat-conducting carrier profiles, potentially impairing the illuminant, especially in LED lighting systems where heat balance is critical.
Innovation Solution
A linear light design featuring a carrier profile with two longitudinal base plates separated by a cavity, where incisions on the connecting areas reduce heat transfer between the plates, allowing for improved thermal insulation and efficient heat dissipation through thinner sections and side areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the carrier profile is made of heat-conducting material to dissipate heat from components, then heat dissipation is improved, but heat transfers from one component to another via the carrier profile, causing unwanted heating
Solution Approach 1:
The carrier profile is segmented into two separate base plates (front and rear) that are spaced apart to form a cavity. This segmentation breaks the continuous heat conduction path, preventing heat from transferring from the rear base plate to the front base plate while still allowing each plate to dissipate heat effectively to its respective environment.
Solution Approach 2:
A cavity filled with insulating material (or air acting as insulator) is introduced as an intermediary between the front and rear base plates. This intermediary layer blocks thermal conduction between the plates while maintaining structural integrity and allowing lateral heat dissipation through the connecting areas.
2Object-affected harmful factors
If a cavity is formed between the base plates to thermally separate them, then heat transfer between components is reduced, but heat still transfers laterally through the connecting areas to the illuminated component
Solution Approach 1:
The connecting areas are designed with locally reduced thickness compared to the base plates, creating zones of lower thermal conductivity. This local quality change allows the connecting areas to provide structural support while minimizing lateral heat transfer to the illuminant mounted on the front base plate.
Solution Approach 2:
Heat dissipation is redirected from the problematic lateral path (through connecting areas to illuminant) to alternative paths through the broader surfaces of the base plates and into the cavity space. This dimensional redistribution of heat flow paths reduces concentrated heat transfer to sensitive components.
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
This configuration effectively prevents excessive heat transfer between components, protecting the light source and ensuring efficient heat dissipation, thereby maintaining optimal operating conditions for both the operating device and the illuminant.
Implementation Method 1
The cavity between the two base plates can in particular be filled with air... Such a cavity enables thermal insulation of the two base plates or the front and the back from one another.
Implementation Method 2
By providing an incision in the carrier profile on both sides between the two base plates, heat transfer from one base plate to the other base plate can be reduced or even prevented. In particular, the carrier profile can be relatively thin at the incisions, so that the heat transfer or the heat transfer at this point is relatively poor.
Data Source
AI summary
A linear luminaire (1) comprises a light source (4), a control gear (5) for operating the light source (4), and a one-piece support profile (2). The support profile (2) comprises two longitudinal base plates (211, 212), each having two longitudinal sides and two end faces. The two base plates (211, 212) of the support profile (2) each have an inner surface facing the other base plate (211, 212) and an outer surface facing away from the other base plate (211, 212). One of the outer surfaces of the two base plates (211, 212) of the support profile (2) forms a front (214) of the support profile (2), and the other of the outer surfaces of the two base plates (211, 212) of the support profile (2) forms a back (213) of the support profile (2). The light source (4) is mounted on the front (214) of the carrier profile (2) and the control gear (5) is mounted on the back (213) of the carrier profile (2).The support profile (2) has two lateral connection areas (28), each connecting the two base plates (211, 212) to one another along their longitudinal sides such that the base plates (211, 212) are spaced apart from each other and a cavity (27) is arranged between the two base plates (211, 212). In particular, the support profile (2) includes two incisions (23), each extending along the corresponding longitudinal side between one of the two connection areas (28) and one of the two base plates (211, 212) connected to it. This reduces or even prevents heat transfer from one base plate to the other. The inventive design of the support profile (2) thus enables a simple and efficient thermal separation of the control gear (5) and the light source (4).