Photography Lamp Lens Barrel Cooling With Self-Powered Venting
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Solution Overview
Problem
Existing light adjustment devices suffer from poor heat dissipation, leading to surface temperature increases that can cause burns or thermal deformation, particularly when used with high-power lamps.
Innovation Solution
A light adjustment device equipped with a mounting component featuring heat dissipation holes, a lens barrel, and a heat dissipation component comprising a motor and fan blades to expel hot air, along with a thermoelectric generator to convert thermal energy into electrical energy for powering the motor, and additional heat-absorbing and heat sink components for enhanced cooling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a high-power lamp is used for extended periods, then illumination intensity is improved, but surface temperature increases causing burns or thermal deformation
Solution Approach 1:
The mounting component is divided into multiple sections with independent heat dissipation holes distributed across different locations. This segmentation allows heat to be dissipated from multiple points simultaneously, improving overall heat dissipation efficiency while maintaining high-power illumination operation.
Solution Approach 2:
A fan is introduced to create forced air convection current that passes through the heat dissipation holes. The pneumatic system actively circulates air through the mounting component, enhancing heat transfer from the lamp to the surrounding environment and effectively controlling surface temperature during extended high-power operation.
2Temperature
If heat dissipation holes are added to the mounting component, then heat dissipation is improved, but device complexity increases
Solution Approach 1:
The heat dissipation holes are integrated directly into the mounting component structure itself, merging the heat dissipation function with the existing mounting structure. This eliminates the need for separate heat dissipation components and reduces overall device complexity while maintaining effective heat dissipation capability.
Solution Approach 2:
The mounting component serves multiple functions: it mounts the lamp, provides structural support, and incorporates heat dissipation holes for thermal management. This multi-functionality reduces the number of separate components needed and simplifies the overall device structure while achieving improved heat dissipation.
3Temperature
If a fan is added to the heat dissipation component, then heat dissipation is improved, but power consumption increases
Solution Approach 1:
The fan is driven by a motor that is powered by the thermoelectric generator, creating a self-service system where the heat dissipation mechanism is self-powered. The thermoelectric generator converts the temperature difference between the hot lamp area and the cooler surrounding into electrical energy to drive the fan, eliminating the need for external power sources and reducing overall power consumption.
Solution Approach 2:
The temperature difference caused by the hot lamp, which is normally a harmful factor leading to overheating, is converted into a beneficial resource by the thermoelectric generator. The generator harnesses this temperature gradient to produce electrical energy that powers the fan, transforming the harmful thermal energy into useful mechanical work for heat dissipation.
4Loss of energy
If thermoelectric generator is added to convert thermal energy, then energy efficiency is improved, but device complexity increases
Solution Approach 1:
The thermoelectric generator is integrated into the existing mounting component structure, merging the energy conversion function with the mounting structure. This integration minimizes additional components and reduces overall device complexity while achieving improved energy efficiency through thermal energy conversion.
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
Effectively reduces surface temperature, preventing scalding and thermal deformation, while utilizing thermal energy for power generation, thus ensuring safe and efficient operation.
Implementation Method 1
a heat dissipation component, disposed at one of the heat dissipation holes, the heat dissipation component comprising a motor and fan blades connected to the motor, to discharge heat from the mounting cavity and the lens barrel to the exterior through flowing air
Implementation Method 2
a thermoelectric generator, disposed on the mounting component and electrically connected to the motor; one end of the thermoelectric generator is in contact with the air inside the mounting cavity, and the other end is in contact with the air outside the mounting cavity, so as to generate a temperature difference between the two ends of the thermoelectric generator and convert thermal energy into electrical energy
Implementation Method 3
a heat-absorbing component disposed within the mounting cavity for absorbing heat within the mounting cavity
Implementation Method 4
a heat sink, disposed on the mounting component at the end away from the lens and located outside the mounting cavity; and the heat sink is in close contact with the thermoelectric generator at an end away from the heat-absorbing component
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
A light adjustment device comprises: a mounting component, internally forming a mounting cavity, the mounting component being provided with a plurality of heat dissipation holes communicating with the mounting cavity; a lens barrel, comprising a barrel body and a lens, with one end of the barrel body located inside the mounting cavity and the other end located outside the mounting cavity, and the lens being disposed within the barrel; and a heat dissipation component, disposed at one of the heat dissipation holes, the heat dissipation component comprising a motor and fan blades connected to the motor, to discharge heat from the mounting cavity and the lens barrel to the exterior through flowing air. The light adjustment device, when used in conjunction with a light source assembly, employs a motor to drive the fan blades. By promptly expelling the hot air inside the mounting cavity and the lens barrel through ventilation or forced air cooling, it can be ensured that the temperature of the light adjustment device does not become excessively high, thereby preventing scalding or burns during prolonged use.