FIELD

The present application is related to a lighting apparatus and more particularly related to an LED lighting apparatus.

BACKGROUND

Electroluminescence, an optical and electrical phenomenon, was discovered in 1907. Electroluminescence refers the process when a material emits light when a passage of an electric field or current occurs. LED stands for light-emitting diode. The very first LED was reported being created in 1927 by a Russian inventor. During decades' development, the first practical LED was found in 1961, and was issued patent by the U.S. patent office in 1962. In the second half of 1962, the first commercial LED product emitting low-intensity infrared light was introduced. The first visible-spectrum LED, which limited to red, was then developed in 1962.

After the invention of LEDs, the neon indicator and incandescent lamps are gradually replaced. However, the cost of initial commercial LEDs was extremely high, making them rare to be applied for practical use. Also, LEDs only illuminated red light at early stage. The brightness of the light only could be used as indicator for it was too dark to illuminate an area. Unlike modern LEDs which are bound in transparent plastic cases, LEDs in early stage were packed in metal cases.

With high light output, LEDs are available across the visible, infrared wavelengths, and ultraviolet lighting fixtures. Recently, there is a high-output white light LED. And this kind of high-output white light LEDs are suitable for room and outdoor area lighting. Having led to new displays and sensors, LEDs are now be used in advertising, traffic signals, medical devices, camera flashes, lighted wallpaper, aviation lighting, horticultural grow lights, and automotive headlamps. Also, they are used in cellphones to show messages.

A Fluorescent lamp refers to a gas-discharge lamps. The invention of fluorescent lamps, which are also called fluorescent tubes, can be traced back to hundreds of years ago. Being invented by Thomas Edison in 1896, fluorescent lamps used calcium tungstate as the substance to fluoresce then. In 1939, they were firstly introduced to the market as commercial products with variety of types.

In a fluorescent lamp tube, there is a mix of mercury vapor, xenon, argon, and neon, or krypton. A fluorescent coating coats on the inner wall of the lamp. The fluorescent coating is made of blends of rare-earth phosphor and metallic salts. Normally, the electrodes of the lamp comprise coiled tungsten. The electrodes are also coated with strontium, calcium oxides and barium. An internal opaque reflector can be found in some fluorescent lamps. Normally, the shape of the light tubes is straight. Sometimes, the light tubes are made circle for special usages. Also, u-shaped tubes are seen to provide light for more compact areas.

Because there is mercury in fluorescent lamps, it is likely that the mercury contaminates the environment after the lamps are broken. Electromagnetic ballasts in fluorescent lamps are capable of producing buzzing mouse. Radio frequency interference is likely to be made by old fluorescent lamps. The operation of fluorescent lamps requires specific temperature, which is best around room temperature. If the lamps are placed in places with too low or high temperature, the efficacy of the lamps decreases.

In real lighting device design, details are critical no matter how small they appear. For example, to fix two components together conveniently usually brings large technical effect in the field of light device particularly when any such design involves a very large number of products to be sold around the world.

It is also important to consider how to conveniently install a lighting apparatus. Particularly, many societies face aging problems. More and more old people need to replace or install lighting devices by themselves. Labor cost for installing lighting devices is also increasing. It is therefore beneficial to design a better way to install various lighting devices.

In some applications, it is important to project a light on an object or an area to emphasize the object or the area.

Light bulbs are widely used since Edison released his light bulbs. Today, more and more light bulbs use LED modules as light sources. There are many problems to solve and advantages to discover when converting to LED technology to design light bulbs.

It is challenging and beneficial to design a better light bulb with easier assembly and lower manufacturing cost.

SUMMARY

In some embodiments, a light bulb apparatus, includes a bulb shell, a light source module, a bulb head, a bottom pin and a driver module.

The bulb shell has a light passing cover and a neck portion. The bulb head has a body portion and an Edison cap. The body portion is connected to the neck portion for enclosing the light source module. The light source module emits a light passing the light passing cover. The Edison cap has a conductive screw wall for connecting to a first electrode of an Edison socket. A bottom pin is used for connecting a second electrode of the Edison socket.

The driver module is enclosed by the bulb head. The driver module has a driver plate mounted with a driver component and a driver input terminal. The driver input terminal has a guiding groove. The guiding groove has an entrance end leading to the guiding groove. The entrance has a larger opening than a diameter of the guiding groove. The driver input terminal has a first wiring clip, the bottom pin is inserted into the guiding groove via the entrance and engages the first wiring clip for electrically connected to the driver component.

In some embodiments, the guiding groove has a bottom wall, a first lateral wall and a second lateral wall, the first lateral wall and the second lateral wall are respectively extended from the bottom wall forming the guiding groove.

In some embodiments, the first wiring clip fixed to the first lateral wall has a first extending portion placed in the guiding groove, an engaging portion is extended and bent from the first extending portion toward the second lateral wall, the first extending portion, the second lateral wall and the bottom wall together form a position limiting ring for the bottom pin.

In some embodiments, an exit end is at an opposite side of the guiding groove with respect to the entrance end, a diameter of the guiding groove is gradually decreased from the entrance end to the exit end.

In some embodiments, the driver input terminal has a second wiring clip. The second wiring clip is fixed to the second lateral wall. The second wiring clip has a second extending portion engages the conductive screw wall for electrically connecting the conductive screw wall to the driver component.

In some embodiments, the bottom pin has an elastic reverse hook fixed to an end of the engaging portion.

In some embodiments, the driver plate is inserted into a guiding groove of the bulb head, the driver plate is fixed to the bulb head with the elastic revere hook and the guiding grooved.

In some embodiments, the neck portion includes a heat insulation belt on for a user to hold and release the light bulb apparatus from the Edison socket.

In some embodiments, the body portion of the bulb head includes a heat insulation belt for a user to hold and release the light bulb apparatus from the Edison socket.

In some embodiments, the light source module includes multiple filament, each filament is mounted with multiple LED modules.

In some embodiments, bottom ends of the multiple filaments form a larger area than top ends of the multiple filaments, the bottom ends are closer to the bulb head than the top ends.

In some embodiments, the top ends of the multiple filaments are fixed together.

In some embodiments, the light source module includes multiple flexible filaments having multiple optical parameters.

In some embodiments, the multiple flexible filaments are bent and twisted together.

In some embodiments, the bulb head has a first portion and a second portion. The first portion is rotatable with respect to the second portion for change a setting for the driver component to control the light source module according to the setting.

In some embodiments, an electric converter is placed in the first portion and a wireless circuit is placed in the second portion.

In some embodiments, an electric converter is placed in the first portion and a wireless circuit is placed in the second portion.

In some embodiments, the light source module includes a light source plate plugged to the driver plate with metal pins.

In some embodiments, the light source plate has elastic clips for fixing the metal pins of the driver plate.

In some embodiments, the driver plate is connected to heat conductive strip to transmit heat to the bulb head.

