CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority to the following Chinese Patent Applications No. 201910701977.9 filed on 2019 Jul. 31, No. 201910846435.0 filed on 2019 Sep. 2, No. 201911161961.X filed on 2019 Nov. 25, No. 201911395603.5 filed on 2019 Dec. 30, No. 202010086708.9 filed on 2020 Feb. 11, No. 202010248366.6 filed on 2020 Apr. 1, No. 202010329607.X filed on 2020 Apr. 24, No. 202010667401.8 filed on 2020 Jul. 13, the disclosures of which are incorporated herein in their entirety by reference.

BACKGROUND

Technical Field

The present disclosure relates to lighting apparatus, and more particularly, to an LED lamp.

Related Art

A ceiling lamp is a lamp ornament which is adsorbed or embedded into the ceiling of a roof, and is often used as a lighting device in various places such as home, office, and entertainment places. The traditional ceiling lamp is usually composed of a base, a light source module, a circuit module and a lamp shade. The light-emitting elements in the light source module are generally energy-saving lamp tubes. The light-emitting element of the ceiling lamp gradually replaces the energy-saving lamp tube with the LED, because the energy-saving lamp tube is polluted by mercury during production and after being discarded, and the power consumption of the energy-saving lamp tube is larger than that of the LED, and the LED has the characteristics of mercury free, non-toxic, no electromagnetic pollution, no harmful radiation, energy-saving, environmental protection, long service life and the like. However, the prior ceiling lamps still suffer from problems such as light emission, heat dissipation, installation, and packaging during use, as follows:

1. In the lighting process, there are flash, small illumination range, uneven illumination, low brightness in the central part of the lamp, uneven illumination in the central part of the lamp and the peripheral part of the lamp, uneven illumination on the light-emitting surface, glare, uneven illumination in the circumferential direction of the lamp, uneven illumination on the mounting surface of light-emitting element, uneven brightness and low color rendering, low light-emitting efficiency and light design, bright spots, low rendering effect, uneven color mixing, uneven illumination in the ceiling circumferential direction, light blocking due to the circuit elements with high height, high deviation in color temperature and color, narrow light orientation, low light transmission efficiency, low light-emitting efficiency of the light source, dim side area of the lampshade, uneven brightness in the light-emitting surface of the lampshade, generation of bright lines, low light extraction efficiency of the light-emitting elements, low light comfort, and low aesthetic feeling in extinction. Further, some use scenarios may require the light emitted by the lamp to have a three-dimensional effect or generate a corresponding light space according to a corresponding life scenario, a paper with hue have lower readability for users under the lamp, or the seniors have a low feeling of light comfort due to color saturation of letters and observed objects for seniors.

In order to improve the optical effect of the ceiling lamp, firstly, a backlight lens is added to the LED to reduce the dark area of the middle portion and the edge portion of the lamp, but the production cost is greatly increased and the product competitiveness is reduced due to the use of the backlight lens and the lens mounting technology. Secondly, optical components, such as light guide plates, lenses, or reflection units, are disposed between the light-emitting element and the lampshade. However, when the optical components are used, there are problems such as a change in the amount of light incident on the light guide plate, a complex structure of the optical member, an uneven brightness on the light guide plate, and a dark portion on the light guide plate.

2. The light-emitting elements and the circuit elements generate heat which affects the service life of the ceiling lamp;

3. The light source module is mostly installed in the lamp body by screws or pasted in the lamp body by adhesive, and is not easily removed and replaced after installation. In addition, after the ceiling lamp is used for a long time, aging and burnout of the light source module often occur. For example, when the light source module is damaged and needs to be replaced, the damaged light source module needs to be detached by tools, and then a new light source module is installed through the tools. The replacement operation of the LED light source module must be performed by professionals, which is not convenient.

4. The ceiling lamps are usually flat and have the characteristics of small occupation in height, wide illumination range, and the like. However, the overall thickness of the ceiling lamps is still large, and the overall volume of the ceiling lamps is also large, thereby increasing the packaging and inventory costs.

In addition, there are also problems such as low safety, low manufacturing efficiency, high use cost, easy access to the interior of the lamp such as insects and then affect aesthetic appearance, inability to continue lighting when the power supply is faulty, small installation area of a circuit board, low remote control sensitivity or narrow remote control range when intelligent control is performed, and noise during installation in order to make the lamp have a large luminous flux.

In summary, in view of the shortcomings and defects of the prior LED lamps, how to design an LED lamp to solve a technical problem of the prior art described above is expected to be solved by those skilled in the art.

SUMMARY

A number of embodiments of the present disclosure are described herein in summary. However, the vocabulary expression of the present disclosure is only used to describe some embodiments (whether or not already in the claims) disclosed in this specification, rather than a complete description of all possible embodiments. Some embodiments described above as various features or aspects of the present disclosure may be combined in different ways to form an LED lamp or a portion thereof.

The present disclosure is directed to an LED lamp and features in various aspects to solve the above problems.

The LED lamp comprises a lampshade and a base connected to the lampshade, wherein a photoelectric module is disposed in an accommodating space formed between the lampshade and the base. The photoelectric module comprises a light source module and a power supply module. The base comprises a mounting portion, and the photoelectric module is fixed onto the base through the mounting portion.

In some embodiments, the photoelectric module is detachably fixed to the base.

In some embodiments, the photoelectric module comprises a circuit board having a first side and a second side arranged relatively, wherein the first side is a side facing the lampshade, the electronic components of the light source module are disposed on the first side, and the electronic components of the power supply module are disposed on the second side.

In some embodiments, the photoelectric module further comprises an insulating unit having a first insulating portion and a second insulating portion, the first insulating portion covers the electronic components on the first side and the second insulating portion covers the electronic components on the second side.

In some embodiments, the circuit board comprises a plurality of LED chipsets disposed thereon, each of the plurality of the LED chipsets includes a plurality of LED chips, and each of the plurality of the LED chipsets is located on the same circumference. Assuming the number of the circumference is set to be n (n is greater than or equal to 1), the pitch angle of the LED chips may be set to be (90/n)°.

In some embodiments, the second side of the circuit board includes a third region for the power supply module to be disposed thereon and a fourth region, the first side includes a first region opposite to the third region and a second region opposite to the fourth region, and the number of the LED chips located in the first region is less than the number of the LED chips located in the second region.

In some embodiments, the second side of the circuit board includes a seventh region and a eighth region, and an electronic components of the power supply module include a heat generating component and a heat-sensitive component, where the heat generating component and the heat-sensitive component are located in the third region of the seventh side and the eighth region of the second side, respectively. the first side of the circuit board includes a fifth region opposite to the seventh region of the second side and a sixth region opposite to the eighth region of the second side, and the number of the LED chips located in the fifth region of the first side is less than the number of the LED chips located in the sixth region of the first side.

In some embodiments, a reflective member is disposed between the LED light source module and the power supply module, and the LED light source module surrounds the reflective member. The light source module comprises a circuit board and at least one set of the LED chipsets disposed on the circuit board, each of the LED chipsets comprises a plurality of LED chips, and the light emitting surface of the plurality of LED chips faces the central axis of the LED lamp.

In some embodiments, a Cartesian coordinate system having an X-axis, a Y-axis, and Z-axis is oriented for the LED lamp, wherein the Z-axis is parallel to the central axis of the LED lamp. A hole is formed in a central portion of the base, a supporting portion and an edge portion are formed around the hole. A gap formed between the supporting portion and the edge portion extends in a negative direction along the Z-axis to form a groove portion, and the supporting portion and the edge portion are in the same position in the positive direction of the Z-axis.

In some embodiments, there is also a gap between the photoelectric module and the supporting portion.

The present disclosure achieves one or any combination of the following advantages through the above-mentioned designs:

(1) The photoelectric module is rotationally fixed by the mounting portion, so that installation and maintenance are convenient, and work efficiency is improved; (2) adjusting the arrangement of the LED chips on the light source module so that the light emitting effect of the LED lamp is more uniform and the heat dissipation effect is more excellent; (3) the electronic components on the second side of the circuit board are located on the radially more inner side of the circuit board than any one of the electronic components of the light source modules, so that the electronic components on the second side of the circuit board can be prevented from being affected by the heat generated when the electronic components of the light source modules are operated, and the distribution area of the electronic components on the second side of the circuit board can be limited, thereby controlling the size of the second insulating portion to control the cost; (4) the LED chips and the power supply module are respectively located on the first side and the second side of the circuit board, and the number of the LED chips in the area corresponding to the power supply module on the first side is smaller than the number of the LED chips in the area not corresponding to the power supply module on the first side, so that on the one hand, the dark area in the middle of the LED lamp is significantly reduced, the luminous effect of the LED lamp is improved, and on the other hand, the influence of heat generated by the power supply module on the light source module can be reduced; (5) a second power supply module having a relatively high height is located in the groove portion of the base, so that the height of the ceiling lamp is effectively reduced because there is no need to provide a storage space for the power supply module, and the photoelectric module can be moved away from the lampshade so that the amount of light from the light source module to the edge of the lampshade is increased; (6) the first insulating portion has a certain degree of radian, so that the degree of stress of the first insulating portion can be increased to ensure that the photoelectric module is not damaged during transportation; (7) the second insulating portion is in contact with the side wall of the groove portion of the base to increase the contact area and improve the thermal conductivity; (8) the light-emitting surface of the LED chip faces the central axis of the lamp, thereby effectively eliminating the intermediate dark region and improving the light-emitting effect of the lamp; (9) the luminous flux of the LED lamp can be effectively improved by using a lampshade material having a refractive index n1 of the encapsulation layer of the LED lamp bead for selecting an appropriate refractive index; (10) an excellent optical effect can be obtained by providing a refractive index matching layer on the surface of the LED chip or the inner surface of the lampshade by the thickness design thereof.

