Overview of LED street lamp chip light source and replacement light source

Overview of LED street lamp chip light source and replacement light source 1. Chip-type light source 1-pin insertion type (DIP) This LED lamp bead is a light-emitting diode with a relatively simple structure, because there are two filaments shaped like "feet" under the lamp bead, which can be directly connected to the circuit board. So it is called a pin-inserted lamp bead. It has good safety, stable performance, can emit light under low voltage conditions, and has low loss, high efficiency, long life, and can also perform multi-color dimming. Common shapes: This kind of lamp beads can have various shapes, such as round, oval, square, and even special-shaped.

Although roughly speaking, there is not much difference in shape and size, but the cross-sections of different shapes of lamp beads are different. Luminous type: If you observe different lamp beads carefully, you will find that the number of "pins" of some lamp beads is different, and these "pins" can make the light-emitting diodes produce light of different colors. Application fields: In the field of lighting, pin plug-in lamp beads are hardly used; generally they are mostly used as car lights, indicator lights, display screens, etc.

Low-power surface-mounted (SMD) lamp bead light source solders the light-emitting diodes on the surface of the circuit board instead of passing through the circuit board. It is small in size, and some are even smaller than pin-inserted lamp beads. Common models: There are many models of this type of lamp beads, the more commonly used ones are 2835 (PCT), 4014, 3528, 3014, etc. The first two digits of each model number indicate the width "x.xmm", and the last two digits indicate the length " x.x mm".

For example, 2835 represents a width of 2.8 mm and a length of 3.5 mm. The surface is coated with yellow fluorescent powder and emits white light. Application fields: This kind of low-power surface-mounted lamp beads can be used in a very wide range. Because of its small size, it can be used anywhere, so it can be pasted on various LED lights, and the quantity can be adjusted and changed according to needs.

The third type of high-power surface-mounted lamp beads is also a surface-mounted type, which is similar in nature to low-power surface-mounted lamp beads, except that the high-power and volume are larger; in terms of fine structure, there is an extra lens, which can The light comes together better. Common types: There are also many types of high-power surface-mounted lamp beads: if the surface color of the lamp bead is yellowish, it generally has a low color temperature; if the surface color is greenish, it is generally a high color temperature; if there is no phosphor, the lamp bead is colorless and transparent , generally colored light. Field of application: This kind of lamp beads is generally used after being put on a lens (to facilitate the convergence or dispersion of light), and is often made into spotlights and spotlights.

The other type of integrated package (COB) is the integrated packaged lamp bead, which packs many lamp bead chips on the same board, and the size is the same as the diameter of a 50 cent coin. Common shapes generally include round, strip and square, and strip-shaped integrated boards are often used as desk lamps. 2. Replacement light source LED replacement is a more generalized light source based on lamp beads.

First of all, the lamp beads of LED street lamps can be made into various bulbs, which can be matched with traditional power interfaces and replaced at will. Application fields: The obvious meaning is that it can replace the original halogen lamp or incandescent lamp (low power consumption, high light efficiency); it can also be used as a bulb for chandeliers, decorative lights, down lights, professional lamps, etc. Common models: light strips The other is light strips, which can be divided into hard light strips and soft light strips, which can replace the original T5 fluorescent lamps.

Features: The light strip is soft, small in size, adjustable in light, can be cut and connected at will; strong in plasticity, easy to make shapes and shape contours.Application fields: LED light tubes can be seen in schools, offices, shopping malls and other places.