Description

Product Introduction

◎Dual improvement in the quantity and quality of lamp beads: 400 high-color-rendering index (CRI≥85) LED chips are adopted, with a single luminous efficiency of 150lm/W and a total luminous flux exceeding 60,000 lumens, which is 50% brighter than traditional 400W high-pressure sodium lamps;

◎Industry-leading color rendering: The CRI value reaches 85 or higher (close to natural light), and R9 (red color reproduction) ≥50, which significantly improves the recognition clarity of pedestrians, vehicles and traffic signs at night;

◎Ultra-long service life and low light decay: Through ceramic substrates, gold wire packaging and intelligent temperature control technology, the service life of the lamp beads reaches 100,000 hours, and the light decay rate after 100,000 hours is only 8%, far lower than the industry average (30%-50%).

High-Density High-Quality LED Lamp Beads

New-Generation Lamp Bead Technical Architecture: Imported Chips + Ceramic Packaging + Intelligent Temperature Control

1.400 High-Luminous-Efficiency LED Chips: Total Luminous Flux Exceeds 60,000 Lumens

American Cree XP-G3 or German Osram Oslon Square chips are selected, with a single-chip luminous efficiency of 150lm/W (traditional lamp beads only reach 120lm/W). With a total power of 400W, it can output:

◎Theoretical luminous flux: 400W × 150lm/W = 60,000 lumens;

◎Actual luminous flux: Considering driver efficiency (95%) and optical loss (5%), the final output reaches 54,000 lumens, 8% higher than traditional high-pressure sodium lamps and 25% higher than ordinary LED street lights.

2.Ceramic Substrate + Gold Wire Packaging: Service Life Exceeds 100,000 Hours

The bottom of the lamp bead adopts an aluminum nitride ceramic substrate (thermal conductivity 170W/m·K), combined with 99.99% pure gold wire bonding, reducing thermal resistance from 3℃/W in traditional solutions to 0.6℃/W. Laboratory accelerated aging tests show:

◎Junction temperature control: At an ambient temperature of 85℃, the junction temperature remains below 80℃ (far lower than the LED chip safety threshold of 125℃);

◎Service life prediction: According to the LM-80 standard, the service life of the lamp bead reaches 100,000 hours under the TM-21 model (calculated at 12 hours per day, it can be used for 22 years);

◎Light decay curve: The light decay rate is only 5% after 10,000 hours, and ≤15% after 50,000 hours, far better than the industry average (30%-50%).

3. Intelligent Temperature-Controlled Driver Circuit

The system has a built-in temperature sensor and constant current driver chip, which real-time monitors the lamp bead temperature and automatically adjusts the output current:

◎High-temperature protection: When the junction temperature ≥100℃, the current drops to 80% of the rated value to prevent overheating damage;

◎Low-temperature compensation: When the ambient temperature ≤-20℃, the current increases to 110% of the rated value to ensure low-temperature startup performance.

Lamp Bead Performance Comparison

Lamp Bead Type	Single Luminous Efficiency (lm/W)	Total Luminous Flux (lumens)	100,000-Hour Light Decay Rate	Service Life (hours)	Single Cost (yuan)
Ordinary Domestic Lamp Beads	120	48,000	35%	50,000	0.6
High-Density High-Quality Lamp Beads	150	60,000	8%	100,000	1.8

Excellent Color Rendering Performance

◎New-Generation Color Rendering Technology: CRI≥85 + R9≥50 + Precise Color Temperature Control

◎The new-generation 400 Watt LED Street Light achieves a breakthrough in color rendering through the following designs:

High-Color-Rendering Phosphor Formula: CRI Value Reaches 85 or Higher

A composite formula of YAG (yttrium aluminum garnet)-based phosphor + nitride red phosphor is adopted, with a spectrum covering the full 400-780nm band, especially strengthening the 600-650nm red light region (accounting for ≥15%). This increases the CRI value from the traditional 70 to 85, and the R9 value from -10 to 50.

Precise Color Temperature Control: Deviation ≤±5%

Through multi-channel phosphor proportioning and color temperature sorting technology, the deviation between the actual color temperature of each lamp bead and the nominal value is ensured to be ≤±5%. For example, products with a nominal 5000K have an actual color temperature range of 4950-5050K, eliminating visual fatigue caused by uneven color temperature.

Optical Lens Design: Reducing Glare and Light Pollution

Each lamp bead is equipped with a microprism lens, which controls the light refraction angle within 120°±3° through an aspherical surface. At the same time, a cut-off light distribution curve is adopted, reducing the unified glare rating (UGR) from 25 in traditional schemes to 18 (national standard requires ≤22), significantly improving driving comfort.

Color Rendering Performance Comparison

Color Rendering Index	Industry Standard	Ordinary LED Street Lights	New-Generation LED Street Lights	User Evaluation
CRI Value	≥70	70-75	85-90	"Night colors are true, accident rate reduced"
R9 Value	≥0	-10-+10	50-60	"Red traffic signs are clearly visible"
Color Temperature Deviation	≤±10%	±15%	±5%	"The whole road has consistent color temperature, no glare"