Led Traffic Light and Traffic Solution Supplier.  sales3@traffic-lights.cn


"Quality first" is the work tenet of every staff of FAMA TRAFFIC (CHEVY LIGHT), which comes through all procedures. Fama has already obtained ISO9001-2015 quality management system certificate and all other safety certificates (CE-EN12368、EMC、LVD、TUV、GB14887-2011 etc), which ensure our long term and well cooperation with our customers.

Instead of handwork, the automatic machines have been adopted for the welding component, ..most production and testing processes are accomplished by automatic machines.

In order to avoid the potential defects existed in the design and production, we conduct a series of reliability tests such as the electronic performance test for the semi-finished products and finished products, the anti-dust test, the waterproof test, the anticorrosion test(salty spraying test ), the vibration test and thermal shock tester, etc.
The Reliability Test for the Semi-finished products: Before sealant-sealing for semi-finished modules and after QC inspection, more than 72 hours' aging should be made in the high temperature for all the Traffic Light products.
The Reliability Test for the Finished Products: Assembling the finished Traffic Light modules to the Shell and simulating the on-the-spot whole panel assembly, we keep them aging for more than 48 hours, during which, if no defects found, the delivery then can be made.
The Waterproof Test: During the high humidity environment, the waterproof performance of the Traffic Signal Light is quite important. Fama(ChevyLight) performs the high-pressure water-spraying test as well as submerging test, water-showering test against the front panel to ensure its waterproof performance in good state. Therefore, the waterproof degree of IP55 has been completely reached.
The Anticorrosion Test: In order to ensure the reliability of anticorrosion of the PCBs and the Shell treated by anticorrosion, hence, the salty spraying test must be made during the production.
The Simulated Vibration Test: Vibration in transit and typhoon, due to the operation of which is under the conditions of vibration, in order to ensure the reliability of the Traffic Lights, therefore, the simulated vibration test against the Traffic Light must be conducted.
The Simulated Installation Test: The debugging over the Traffic Light under the real outdoor environment can ensure the effects of display in factory are the same with the effects of display on-the-spot.
Fama(ChevyLight) has the advanced and precise apparatus & equipments to ensure the good quality of the products. Through many years of development, Fama(ChevyLight) has kept a leading position domestically in the aspects such as on-the-spot management, quality control, technical development mechanism and management check system etc. in China LED Traffic Light industry.

Production Equipment & Detection Equipment 

Automatic SMT LineAutomatic SMT LineAutomatic Wave-solderingAutomatic Wave-soldering
Chroma Meter TesterFast Spectrometer,
           Integrating Sphere
Vibrator TesterTemperature, Humidity Programmer Chamber
Light intensity test instrumentinsulation testing setdielectric strength testerearth resistance teste

 The processes are monitored by many kinds of precise instruments and parameters Definitions
2.1 Catastrophic Failure. The total loss of visible illumination from an LED light source.
2.2 Chromaticity. The color of the light emitted by the module, specified as x, y chromaticity coordinates on the chromaticity diagram according to the 1931 Commission Internationale d’Eclairage (CIE) coordinate system.
2.3 Conditioning. Energizing an LED signal module at a specified ambient temperature for a specified period of time, to cause any early electronic component mortality failures to occur and to detect any component reliability problems.
2.4 Countdown Pedestrian Signal. A two-digit numeric interval countdown display used to inform the pedestrians of the number of seconds remaining in the pedestrian change interval.
2.5 Duty Cycle. The fraction of time during a specified time period that the module is energized, expressed as a percentage of the specified time period.
2.6 Hard Coat. A surface coating or a film used to provide front surface abrasion resistance.
2.7 Illuminance. The density of the luminous flux incident on a surface. Its value is determined by luminous intensity, angle of incidence and distance from the source to the surface, expressed as lux.
2.8 LED Light Source. A single light emitting diode (LED) or an array of LEDs.
2.9 LED Pedestrian Signal Module (module). A signaling unit comprised of an array of LEDs and related power supply and any required lenses, which, when connected to appropriate power, provides a pedestrian signal indication consisting of a “walking person” or “upraised hand” icon or both.
2.10 Luminance. The luminous flux emitted or reflected from a surface, in a given direction, per unit solid angle, divided by the area of the surface, expressed as cd/m2.
2.11 Luminous Intensity. The luminous flux emitted in a given direction from a source, per unit solid angle, expressed in candelas (cd).
2.12 Minimum Maintained Luminance. The minimum luminance a module is required to provide throughout service as a pedestrian indication or countdown display.
2.13 Nominal Operating Voltage. The AC RMS voltage, 120 VAC, at which photometric performance and power consumption are specified.  
2.14 Pedestrian Change Interval. Period of time when “upraised hand” icon is flashing to advise the Pedestrians that they should leave and /or not enter the intersection.
2.15 Power Consumption. The electrical power in Watts consumed by the module when operated at nominal operating voltage and ambient operating temperature range.
2.16 Power Factor (PF). PF equals Watts divided by Volt-Ampere (VA) or the ratio of power consumption in Watts to Volt-Amperes.
2.17 Total Harmonic Distortion (THD). THD is the ratio of the root-mean-square (RMS) value of the harmonics to the amplitude of the fundamental component of the AC waveform.
2.18 Translate. To move an object along a linear vector, such that the orientation of the object does not rotate relative to the original frame of reference.
2.19 Turn OFF Time. The amount of time required after removal of the nominal operating voltage for the LED signal module to show no visible illumination.
2.20 Turn OFF Voltage. The voltage below which the LED signal module emits no visible illumination.
2.21 Turn ON Time. The amount of time required for the LED signal module to reach 90 percent of full illumination.
2.22 Volt-Amperes. The product of root-mean-square (RMS) line voltage and RMS line current measured with true RMS meter.

Quality objectives
Products manufactured pass rate of  100%
Product on time delivery rate ≥98%
Customer satisfaction ≥98%

Before Production
1.Purchasing Dept. (according to BOM)
2.Incoming quality control (Material Inspection) IQC
OK → Incoming material inspection report
NG → Inferior incoming material Notice

In Production
1.Pilot Sample Inspection QC
A. Test project Record
B. Sample affirmation record Chart
Test & Inspection →NG inform person who responsible
Massive Production
2.Patrol Inspection
IPQC Input process quality control)
                   ↓every 2 hours
Supervise each process→NG back to engineer & director
Fill IPQC Patrol Inspection Record Chart

After Production
1.Laboratory Inspection
                ↓Finished products after 4 hours aging
Laboratory (Test equipment)
2.Out-going Inspection OQC
Finished products (shipping mark, user’s manual, warranty card, accessories…)
                  ↓                                            ↓
         Sales Dept.                               Financial Dept.
     Delivery Notice                           Dispatch Notice
                             Goods Delivery

QC testing process
◆Raw material warehouse inspection. ( testing centre of laboratory).
◆Raw material is stocked. before plug-in components, Qc will conduct the first products inspection .
◆QC need to test the LED panel for inspecting the single LED’S lights and plug in components completes. (production line 1) .
◆Assembling the led module. QC testing it within 12 hours . (12 hours just fit for unfinished goods. ( production line 2).
◆Finished goods inspection ( production line 3 ) . (The main testing scope is light-intensity ,temperature , IP level , voltage ,etc ) .within 24 hours.
◆Inspection before delivery.
◆Testing machine (LED Lignt-Intensity Meter, waterproof and corrosion-proof testing machine( usually we put the goods under the tap), single LED Light intensity,etc).

Product Process Flow Diagram
1.Raw Material Inspection
Check product's material, size, marks and lines etc.
Test Products' quality, To distinguish the qualified products and unqualified products. The unqualifued products we will return to the seller usually.
Spot Check. e.g. 100ps PCB, 20ps will be checked. Etc. We can't guarantee that all Raw materials are qualified in the step.etc.
Raw Material-Inspection
2.Splice Red Gum
Please see the picture. Red gum is printed on the one side of PCB. the SMD is Spliced on the side.
The most important effect is to protect the SMD's plastic part when The PCB is passing wave-soldering. So the products with SMD should be spliced red Gum. etc.
The Red Gum should be equality, The worker must take Static ring. Etc.
Splice Red Gum
3.SMD Machine
Put the PCB into the machine from one side.
Splice SMD on the PCB.
Some PCB don't stick on SMD completely. We have to splice SMD on the PCB by manpower.SMD Machine
4.LED Angle Cutter &LED Resistance Angle Cutter
Put LED lights and Resistance in the Angle Cutter separately .
Cut excess LED Angle and Resistance Angle. etc.
The worker should be Careful.The worker must take Static ring
Angle Cutter
5.Plug-In Resistance&LED
Plug in Resistance and LED lights in suitable position .
Making light source.
Distinguish LED's Positive, Negative and Colours. Distinguish the Resistance' s size. The worker must take Static ring.Plug In Resistance&LED
Please see the pictures. The workers put the PCB to enter ino the first picture out the second picture.
Fixed LED lights and Resistance.
The PCB must be fixed and level,the temperature is very high, the worker Should be careful.
The worker must take Static ring. Wave soldering to be transferred to 250 degrees
Wave soldering
7.Repair Welding
There are many cold solder and solder skips after the last process.The worker have to repair tinning for them.
Fixed LED lights and Resistance.
The worker should repair tinning in suitable position. The worker must take Static ring.
Please see the picture . The worker must check Tinning , LED lights, Resistance,lines and so on in this step.
Check products. In order to make qualified products.
Check products. In order to make qualified products.
After repair welding, check the soldering condition and test whether the LED lamp is normal . If check OK,it can be into the second stage.
The Products of production Line 1
9.Install Copper Cylinder
Put the PCB on the clean table.The copper cylinders vertically are inserted into the PCB.
Split joint power supply and PCB for next process.
The table must be clean. The copper cylinder must be Vertical.The worker must take Static ring.etc.
10.Split Joint Power Supply
①.Power Supply Aging 48 hours.
Put power supply on the PCB. and Connect Power supply with PCB by the copper cylinder.
The power supply offer suitable Voltage and Current for LED lights
The table must be clean. The copper cylinder and Power Supply must be Vertical. The worker must take Static ring. Etc.Split-Joint-Power-Supply
11.Weld DC Power Lines
The power supply Face up on the table. The workers Connect Power lines with Power supply. The black line connect negative. the other line connect positive.
Transmit Direct Current.
The table must be clean. Pay attention to power supply's positive and negative. The worker must take Static ring. Etc.
12.Weld AC Power Lines
The power supply Face up on the table.Connect Power lines and Power supply. The black line connect N mark. the other line connect L Mark. N mark stands for Zero Line, also Nagative. L mark stands for Fire line, also Positive.
Transmit AC.
The table must be clean. Pay attention to power supply lines's mark. The worker must take Static ring. Etc.
13.Testing Power Supply & LED Lights
Testing LED lights: test if the LED lights can be bright. Testing Power Supply: test the power supply's voltage, current and power etc .
Test LED lights and Power Supply preliminary. Confirm wether or not the products are qualified first step.
The voltage is 220V. The worker must be carefully. The worker must take Static ring. Etc.
14.Stick Yellow glue, Screw glue and White glue
Put yellow glue on the weld line port. Require yellow glues cover the power lines 3mm. Put screw glues on the Copper Cylinder. Put white gules on the resistance and transformer, etc .
The yellow glues are Fixed the power lines, the screw glues are fixed the screw. the white gules are fixed resistance and transformer.
The worker must take Static ring. Etc.
15.Install LED Bowl
Install LED Bowl.The DC lines connect through the LED Bowl .
Waterproof, Dustproof, Protect PCB. etc.
The worker must take Static ring. Etc.
16.Install Transparent Mask
Install LED Transparent Mask. and is Fixed the LED bowl and Transparent Mask.
Waterproof, Dustproof, Transparent. Protect PCB. etc.
The worker must take Static ring. Etc.
17.Install Seal Ring
Install LED Seal Ring. and is Fixed the LED bowl and Transparent Mask.
Waterproof, Dustproof, . etc.
The worker must take Static ring. Etc.
18.Semi-finished products aging Testing
The Lampwicks are connected the power supply, Don't touch or bother them in 24 hours.
Test lampwick's LED lights, Power supply, PCB . In short, Test the lampwick's performance.etc.
Testing must be over 24 hours. Etc.
The Product of Production Line 2
19.Install Face Frame
Put the Lampwick in the face frame.
Fixed and Protect Lampwick . etc.
The worker must take Static ring. etc.
20.Fixed LED Stator
Connect The lampwick with LED Face Frame.
Fixed the Lampwick and LED Face Frame . etc.
The worker must take Static ring. etc.
21.Connecting Single LED Bottom Base
Connect two Single LED Bottom Base By screw nut.
Making LED Bottom Base. etc.
The worker must take Static ring. etc.
22.Install Deck
Install Deck on both side for LED Bottom Base.
Fixed LED Bottom Base. etc.
The worker must take Static ring. Etc.
23.Install LED Bottom Base
Connect LED Bottom Base with Lampwick by screw nut.
Protect Lampwick, waterproof, dustproof, etc.
The worker must take Static ring. Etc.
24.End products Testing
Connect LED Traffic Lights with power suppy, Test wether or not the LED Lights can shine.
Test products in the last, Confirm if the products are qualified. etc.
The time is no limit. The worker light up the LED lights for testing .etc.
Put the products in the carton with screw,Sun visor , L-shaped Brackt , foam, specification and so on.
Packing products and protecting products. etc.
Pay attention to protect products. Etc.
26.Stick Shiping Marks
The main mark stick on the carton. The side mark sick on the side carton.
The main mark show the guest information. etc. The side mark show the goods information.
Pay attention to the Mark's positon. Etc.
Put products in storage house.
Prepare to deliver goods.
Pay attention to waterproof and moistureproof . etc.
28.Goods Delivery

led traffic light
You can contact us in the following ways

Shenzhen: 4F North, Building C, Fenda High-tech Park, Xixiang Street, Bao'an District, Shenzhen, China. 518126

Yangzhou: No 209, Tongxin East Rode, Wu'an town, Gaoyou, Yangzhou, Jiangsu, China. 225600




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