What is the size of led crystal spotlight？

1. Look at the lamp beads

Lamp beads are the core components of LED lamps. Different types and qualities of lamp beads have different luminous efficiency and lighting angles. Most lamps on the market today are single crystal lamp beads, that is, there is only one crystal. The performance of the dual-crystal lamp beads is better than that of the single-crystal lamp beads, and the lifespan is also longer than that of the single-crystal lamp beads. Comparing the three bulbs in the picture below, the Shellett bulb with double crystal lamp beads is smaller under the same luminous flux. For the same luminous flux, the number of lamp beads required to use double crystal lamp beads is generally significantly less than the number of single crystal lamp beads, which is more conducive to the optimization of lamp body size;

As can be seen from the figure, the same 5W power, the middle of the three bulbs belongs to the double crystal lamp, and the volume is the smallest.

Therefore, when purchasing, you can consult the lamp beads of the shopping guide bulb, and try to choose double crystal lamp beads, which not only have a long service life, but also have a high luminous efficiency and a high luminous angle, and are used in a wider range of occasions.

2. look at the brightness

When purchasing LED lights, many consumers mistakenly believe that the higher the brightness, the better the bulbs. In fact, this is a big purchasing misunderstanding. Because the bright light is like the dazzling sunlight at noon, it is not only easy to damage the eyesight, but also affects the physical and mental health, especially easy to cause children to be withdrawn, irritable and irritable. Therefore, when choosing lamps and lanterns, it is necessary to combine the lighting environment, refer to the luminous flux index of the product, or pay attention to the brightness of the light, and try to choose lamps with sufficient brightness but not dazzling.

3. Look at the color rendering

Looking at the color rendering index is to see the true degree of the color of the object under the light. The higher the realism of the object is, the better. For example, in the comparison of the following two pictures, the picture on the left looks very real, and the picture on the right is obviously seriously distorted.

You can use the colored objects on hand to do experiments under the bulb, and from a more professional point of view, you can use the color rendering index to buy. Generally, the color rendering index of lamps and lanterns is better than 80. The higher the color rendering index, the better the light. The lower the object, the higher the degree of reduction.

4. Look at the heat dissipation material

Since heat is generated during the lighting process of the bulb, the bulb must have good heat dissipation performance. The best heat dissipation material for the bulb is ceramic, followed by plastic-coated aluminum, and then plastic. When purchasing, it is best to choose a bulb made of ceramic materials, and the effective contact area between the light source PCB and the bonding surface of the heat sink is close, which is conducive to the conduction of heat. Plastic materials should not be considered as much as possible to reduce the probability of danger.

5. Look at the light bubble shell

The light bulb shell is commonly known as the lampshade of the light bulb. This part of the material greatly affects the light transmittance, glare, and light and shadow lighting effects of the light. At present, the LED ball bubble shells on the market are generally mainly made of PC and glass. Among them, glass has the highest light transmittance, better light transmission performance, and better uniform light shape, which can reduce glare and light spots. is relatively fragile.

Most of the other bulbs are made of PC material, and the light transmittance is slightly weaker, and the inferior PC cover is easy to age and turn yellow after long-term use.