"The cost reduction of domestic LED display should be considered from the aspects of production cost, maintenance cost and use cost." Wei Zhimin, manager of R&D department of Shenzhen Konka Video System Engineering Co., Ltd. (hereinafter referred to as "Kangjia Video"), introduced from the current industry. In terms of development, domestic LED display technology has moved from the low end to the high end, both in terms of clarity, intelligence, and stability. "Domestic LED displays are gradually taking over the market share of foreign manufacturers."
Konka Video was founded in 2001. In 2005, it was turned from a splicing wall to an LED display. In 2009, it officially entered the field of LED lighting. As a wholly-owned subsidiary of Konka Group Investment Holdings, Konka Video relies on its parent company's advantages in video processing, power supply design, and high level of support to attack the LED display market. With the popularity of the KONKA brand and the absolute advantage of the marketing service network, it has reached an annual output value of over 100 million and maintains a sales growth target of 20% per year.
Improve power supply solutions to improve energy efficiency
The energy-saving concept of LED display has become a bright spot that attracts consumers' attention and is also the reason for the rapid growth in recent years. After crazy growth in recent years, the industry is now in a dilemma of reshuffle.
Recently, there have been a few energy-saving LED displays on the market, which have improved the energy-saving effect by improving the power supply. However, more companies are adopting a solution that reduces the input voltage of the display from 5V to 4.2V. Since the forward driving voltage of red and blue and green bead must be kept at 2.4V and 3.6V, The discreteness of the driving IC and LED turn-on voltage exists. It is difficult to ensure the normal use of blue-green lamp beads when starting in low temperature regions, and the red light still needs to pass the resistance voltage drop, which will generate some useless heat, which invisibly increases the LED display. Screen power consumption loss.
Wei Zhimin advocates a 24V input voltage scheme, which is 15% higher than the 5V input voltage efficiency, and then meets the power supply requirements of various parts of the circuit through DC-DC conversion, and generates a thermal energy loss ratio of 5V input voltage. 1/3 lower. “Currently DC-DC technology is very mature, and its 98% high conversion efficiency is less than that of a conventional solution.†If the red, green and blue bead are separately powered, the LED display is energy-saving. Efficiency and service life will be increased to a greater extent.
Automatically adjust to mainstream market demand
“In the past few years, intelligent control has been a special requirement of customers, and it has become a standard now.†Wei Zhimin said that through the time program control or intelligent adjustment of the photosensitive device, unnecessary power waste can be effectively avoided.
According to the reporter's understanding, the current intelligent adjustment of LED display generally includes three types of LED display brightness control with time-controlled or ambient brightness, remote LED display operation monitoring, and direct connection with supplier SMS. Since the LED display is guaranteed to play normally under different angles and ambient light conditions. When the ambient light is bright, the LED display screen is too dark to clearly meet the viewer's visual requirements; when the ambient light is dark, the LED display is too bright, which may cause the viewer to glare and cannot see the image content.
At present, the LED display on the market mainly adopts time-segment control, and the highest is divided into 12 time periods every day, and the pulse current is controlled by the control system to achieve the purpose of adjusting the brightness of the LED display.
Unfinished
For more information, please refer to the September issue of "High-tech LED-Technology and Applications"
Product Parameters
Description: Floating Bluetooth Speaker with Dazzling Light
Product dimension: Dia 155mm x H 45mm
Material: ABS+PC
Weight: 300g
LED Color: RGB+Warm White
LED Power: 0.5W
Speaker Power: 5W
Lamp Current: 15-20mA
LED Qty: 8pcs RGB lamp beads+4pcs Warm White lamp beads
Battery Capacity: 3.7V, 1000mA (Li battery included)
Protocol: Bluetooth 4.1-CSR
Color of product: Dark Grey
Charging type: by a USB charger
Control Distance: 10m ( No obstacles)
Charging Time: 1.5 hours
Continue Use Time: 3-5 hours
Packing: Each in a color box
Waterproof Index: IP67
Warranty: 1 Year
Certification: CE (EMC,RED) ,ROHS, SCC, BQB,FCC
Suitable Occasions: Indoor and outdoor, can be used in the swimming pool as a Floating Speaker With Light
Color box size: 18*20*5cm
G.W. of Unit: 0.46kg
N.W. of Unit: 0.34kg
Introduction
We combine the Bluetooth speaker with RGBW Light, one switch easy control four lighting modes: warm white lighting mode, no lighting mode, dazzling lighting mode, RGB lighting mode. High-quality speaker with loud, clear sound, combine with color lighting, the plastic sticker can be detachable, waterproof index is IP67, used in the bedrooms, gardens, and swimming pools.
The connection steps are very easy: turn on the speaker by pressing the button at the bottom, open the Bluetooth in the phone, wait for the Bluetooth to search the speaker, then connect successfully.
Four modes of lighting can be selected by the button at the bottom.
Mode 1: the warm white lighting mode with music, it can be used as a night lamp.
Mode 2: music without lighting mode, when under this mode, the initial light is blue, then the light will turn off, it can be used as a speaker only.
Mode 3: rhythemic lighting with music mode, when under this mode, the initial light is red, when play the music, colorful lighting can be dazzled with the music rhythem, it can be used as a party lighting.
Moed 4: music with colorful lighting automatic cycle mode, under this mode, the colorful lighting will change automatically, it can be used as a ambient lighting.
Floating Speaker With Light
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Ningbo Homey Photoelectric Technology. Co., Ltd , https://www.linkuphome.com