Lamp Housing Chimney Effect Cooling
Solution Overview
Problem
Existing lamp housings for street and path lighting, as well as indoor and outdoor applications, are inefficient in cooling light sources like LEDs, leading to reduced performance and lifespan due to inadequate heat dissipation.
Innovation Solution
The lamp housing design incorporates an air inlet opening at the lower area and an air outlet opening at the upper area, connected by a duct, creating a chimney effect that enhances heat transfer from the lighting module to the surrounding air, with additional cooling ribs on the upper plate to increase the effective surface area for heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional lamp housing designs are used, then the structure is simple, but the cooling effectiveness is insufficient
Solution Approach 1:
The lamp housing is segmented into functional zones: upper area with outlet opening, lower area with inlet opening, and intermediate receiving space for lighting modules. This segmentation allows optimized heat dissipation pathways while maintaining structural clarity
Solution Approach 2:
A duct structure acts as an intermediary element connecting the inlet and outlet openings, guiding air flow through the receiving space. The duct serves as a mediator that enhances cooling effectiveness without requiring complex active cooling systems
2Temperature
If cooling ribs are added to increase heat dissipation surface area, then heat dissipation improves, but material usage increases
Solution Approach 1:
Cooling ribs are strategically placed only in the upper area of the housing where heat dissipation is most critical. The ribs are positioned to maximize exposure to outgoing hot air currents while minimizing material consumption in non-critical regions
Solution Approach 2:
The cooling ribs extend vertically upward from the upper plate, utilizing the vertical dimension to increase heat dissipation surface area without expanding the horizontal footprint or overall housing volume
3Temperature
If air inlet opening is positioned for maximum cooling effect, then chimney effect is enhanced, but susceptibility to debris clogging increases
Solution Approach 1:
Instead of positioning the inlet opening at the very bottom where debris accumulation is most likely, the inlet is positioned in the lower area but elevated above the absolute base. The outlet is positioned in the upper area, creating an inverted gradient that maintains strong chimney effect while reducing direct exposure to ground-level debris
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 design effectively cools the light source by utilizing a chimney effect and increased surface area for heat release, improving the performance and longevity of the lighting module while minimizing material usage and preventing clogging from debris.
Implementation Method 1
The heat generated in the lighting module, in particular in a luminous element of the lighting module, is given off to the air in the duct. This heats the air in the duct. The heated air rises in the direction of the upper area of the lamp housing. Cooler ambient air flows into the duct through the air inlet opening located in the lower area. This creates a chimney effect
Implementation Method 2
The effective surface along which heat is released from the luminaire housing to the surrounding air is increased by the cooling fins
Implementation Method 3
The heat generated in the lighting module, in particular in a luminous element of the lighting module, is given off to the air in the duct
Implementation Method 4
The heat generated in the lighting module, in particular in a luminous element of the lighting module, is given off to the air in the duct. This heats the air in the duct
Data Source
Figure 1a~1b
Figure 2a~2c
Figure 3a~3c
AI summary
The invention relates to a lamp housing (100, 200, 300, 400, 500) having an upper region and a lower region as well as a channel (110, 210, 310, 410, 415, 510), wherein in the upper region the channel is connected to an air outlet opening (120, 220, 225, 320, 325, 420, 425) and in the lower region the channel is connected to an air inlet opening (130, 230, 330, 430, 435, 530), and wherein the lamp housing further comprises a receiving chamber for a lighting module (250, 550) which is disposed so that in the installed state the lighting module is located on the channel.