Camera Head Tray Alignment for Heat Dissipation and Tolerance Control
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Solution Overview
Problem
Surveillance cameras face challenges in dissipating heat from processing PCBA's and other components while maintaining robust positioning and accurate alignment of trays within the housing, which are often compromised by manufacturing tolerances and assembly complexities.
Innovation Solution
The use of extruded profiles with machined reference surfaces and clamping mechanisms ensures precise positioning of trays carrying PCBAs and optical blocks, allowing efficient heat dissipation and simplified assembly by aligning cut-out surfaces with housing references, reducing manufacturing tolerances and assembly time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If extruded profiles are used for housing, then manufacturing flexibility and space utilization are improved, but positional tolerance and straightness deviations worsen
Solution Approach 1:
Machined reference surfaces are created on the extruded profile housing before tray installation. These pre-established reference surfaces provide accurate positional references that compensate for the inherent tolerance deviations of extruded profiles, enabling precise tray positioning despite the housing manufacturing limitations.
2Manufacturing precision
If reference surfaces are placed inside the extruded profile, then positioning accuracy of trays is improved, but assembly complexity increases
Solution Approach 1:
The machined reference surfaces on the housing serve multiple functions: they provide positional references for tray alignment, establish accurate spacing between trays and covers, and enable precise electrical connector positioning. This multi-functionality reduces the need for additional specialized features or components.
3Ease of operation
If tight positional tolerance is provided for trays, then cable management is simplified, but manufacturing cost increases
Solution Approach 1:
Machined reference surfaces are pre-created on the housing to establish accurate positional references. This preliminary action enables tight tray positioning tolerances without requiring expensive post-assembly adjustments or complex fixture systems, making the tight tolerances economically feasible.
4Stability of the object's composition
If trays are clamped between housing surfaces, then positioning stability is improved, but heat dissipation efficiency may worsen
Solution Approach 1:
The housing is designed with localized heat dissipation features such as fins or extended surfaces positioned near the trays. This local quality enhancement ensures that heat dissipation occurs at critical locations without requiring the entire housing structure to be optimized, maintaining positioning stability while improving thermal management.
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 approach enables effective heat dissipation, precise tray positioning, and simplified cable management, reducing signal degradation and assembly complexity, while allowing easy access for servicing and electrical connections.
Implementation Method 1
The tray is arranged inside the housing by means of the reference surface of the housing and the corresponding reference surface of the tray abutting each other
Implementation Method 2
a heat transferring element (7), which is arranged between the PCBAs (6) and the first surface (85b)
Data Source
AI summary
A camera head assembly for a camera, a camera including the camera head assembly and a method for mounting the camera head assembly. The camera head assembly includes a camera housing and at least one tray, wherein the housing includes at least one reference surface on its inner surface, and the at least one tray includes at least one reference surface corresponding to the reference surface of the housing, the least one reference surface of the at least one tray preferably being produced by cutting out, wherein the at least one tray is arranged inside the housing such that the at least one reference surface of the housing and the at least one reference surface of the at least one tray abut each other, and such that the tray is clamped between a first surface of the housing and a second surface of the housing.