[Text / high-tech LED Xiong Yuheng] With the continuous popularization of LED lighting, everyone has put forward new and higher requirements for the optical, thermal, electrical and mechanical structure of LED packaging. In recent years, LED packaging devices have been introduced and updated. Among them, COB packaging is increasingly favored by the market for its excellent light color quality, heat dissipation performance, low cost and ease of use.
"At this stage, the conventional COB replaces the metal halide lamp with corresponding performance defects, because the central light intensity of the COB light source cannot exceed the metal halide lamp, and the 'penetration force' is insufficient. Therefore, we choose a COB light source with high power and large light-emitting area. This structure is easy to cause a large loss of luminous flux in secondary optics. In order to avoid this adverse effect, it is very necessary to design a COB light source with high power and small light-emitting area." The same general manager Yang Fan said.
According to the above market demand, the same party has been concentrating on research and development, and its high-power, high-intensity, small-emitting COB products have been produced one after another. Among them, high optical density COB adopts flip chip, no gold wire welding has the risk of pressing dead light, low light source thermal resistance can be arranged with high power and dense, and small light emitting surface is beneficial for secondary light output and secondary optical design.
Yang Fan introduced that the same side high-power high-intensity density COB light source, the main push light surface Φ7.4mm, Φ11 mm, Φ14 mm three, power range 12~80W, the color rendering index is the lowest 80, the highest can be above 95. With a good design angle of narrow angle beam angle, the light intensity can be compared with the metal halide lamp, and the energy saving is more than 50%, which can be a perfect substitute for the metal halide lamp.
Not long ago, the same party purchased a number of high-precision automatic solid crystal machines to further expand its packaging capacity. The purchase of new machine equipment, the expansion of production will focus on the company's core COB products: the traditional mirror aluminum COB light source and the new high-density ceramic flip-chip COB light source.
"The biggest advantage of flip-chip COB is the use of gold-free package, which greatly improves the reliability. At the same time, it has the advantages of low voltage, high brightness, high saturation current density, etc. The same chip area, flip chip can carry more current. The highest power density of COB made by flip-chip method can reach 3~10 times of the power density of ordinary COB light source." Yang Fan mentioned.
Like one of the latest CF series flip-chip COBs with high thermal conductivity aluminum nitride ceramics as the substrate, the highest power density can reach 100lm/m2. It is understood that the COB products are not more than five in China. Because of the need for strong technical accumulation and large investment funds, there are no small technical barriers, but the same party is one of the few that can master the core technology. enterprise.
Previously, the same party successfully entered the high-tech LED Golden Globe Award (COB device category) with CF series high optical density ceramic flip COB.
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The same side CF series high optical density ceramic inverted COB
Product parameters:
Light efficiency: 80-120lm/W;
Color rendering index: 80-95;
Center illumination: can meet or exceed the metal halide lamp;
Glare: no
Lifetime
Violet content: no
Intelligent control: free control
Application range:
Downlights, spotlights, PAR lights, track spotlights, etc.
Market Competitiveness:
The COB light source has the characteristics of high power and high luminous density, and the main light-emitting surface is Φ7.5mm, Φ10.2 mm, Φ13.5 mm, the power range is 60-120W, and the color rendering index is between 80 and 95. With a fairly good design angle of narrow angle beam angle, it can reach the light intensity of the center of the metal halide lamp, and the energy saving is more than 50%. It is a good choice to replace the metal halide light source.
MAPP is colorless in both liquid and gas form. The gas has a pronounced acetylene-like or fishy odor at concentrations above 100 ppm, due to the addition of substituted amines as a polymerization inhibitor. Low molecular weight alkynes have strong odors. Mapp Gas is toxic if inhaled at high concentrations. Mapp gas is a mixture of various hydrocarbons, principally, methylacetylene , propadiene and Propane(MAPP). It produces a relatively hot flame (2,976°C) with a high heat release in the primary lame (inner cone) (15,445kJ/m 3 ), less than for acetylene (18,890kJm 3 ) but much higher than for propane (10,433kJm 3 ). The secondary flame (outer cone) also gives off a high heat release, similar to propane and natural gas. The combination of a lower flame temperature, more distributed heat source and larger gas flows compared with acetylene results in a substantially slower pierce time.
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ZHEJIANG ICE LOONG ENVIRONMENTAL SCI-TECH CO.,LTD. , https://www.china-refrigerantgas.com