Abstract: A flexible trainer stand for indoor cycling includes a bracket, a flat plate, a first guide portion, a second guide portion, and elastic devices. The first guide portion and the second guide portion can slide relative to each other, which is configured for simulating forward and backward movement of a bike generated when a user accelerates and sprints. The first guide portion and the second guide portion can be inclined under an action of the elastic device, which is configured for simulating left and right inclination of the bike generated when the user is cycling and exerting force. A lifting device is arranged on the flat plate, which is configured for simulating position changes of the bike in a vertical direction when a slope changes. Somatosensory feedback of the user during outdoor cycling is truly simulated, and a feedback force can be adjusted.

Abstract: The present invention relates to lighting field, provides an LED module, the LED module comprises a cuttable LED holder and a detachable drive circuit, the LED holder is provided with a plurality of LED lighting units with different power and different color temperature, the LED lighting unit comprises one or more LED chips and a packaging layer arranged at an outside of the LED chip, the drive circuit is connected to the LED chips and used for driving one or more of the LED chips to light. The LED module can be cut into modular units with required power, lighting color and color temperature, the LED module can be made by a kind of process to avoid the usage of various material and production devices, numerous and complicated processes aren't required, thus the problem of resource waste in the production of the LED module and low production efficiency is solved.

Abstract: A warm white light LED chip with high brightness and high color rendering includes a white light part emitting a white light, a colored light part emitting a colored light with a wavelength of 580 nm-660 nm, an N electrode (8, 294, 394, 494) and a P electrode (7). Connected electrically with the N electrode (8, 294, 394, 494) and the P electrode (7) respectively, the warm white light LED chip directly emits warm white light with a color temperature of 2400K to 3500K and a color rendering index larger than 85. When the chip is lighted, the white light part emits the white light directly, or a blue light part stimulates fluorescent powder to form the white light, and the colored light part emits the colored light with the wavelength of 580 nm-660 nm to compensate the white light, thereby forming a low color temperature light source with high brightness and high color rendering.