TWI418734B - Lighting device - Google Patents

Description

Lighting device

The present invention relates to a lighting device, and more particularly to a lighting device that combines heat dissipation effects, an in-line locking structure, and electrical compliance regulations.

Lighting fixtures are an indispensable item in modern life. Among them, the light bulb used in the lighting device plays a key role in affecting the quality of the lighting device, and accordingly, various improved light bulbs are developed to increase the efficiency of the lighting device. At present, due to the advantages of high lifetime, high luminous efficiency, power saving and immediate switching, the light emitting diode (LED) gradually replaces the traditional light bulb and becomes the future use trend of the light source.

When the light-emitting diode is used, its stability and service life are closely related to its own heat dissipation capability. In other words, the heat dissipation capability is a factor that affects the performance of the light-emitting diode. Therefore, when the lighting device uses the light-emitting diode as the light source, it is necessary to find a solution to the problem of heat dissipation. However, at present, the lighting device using the light-emitting diode on the market mostly uses the method of natural heat dissipation, and the effect thereof is not ideal; therefore, the special heat dissipation structure on the lighting device of the light-emitting diode has become a major trend. .

However, most of the heat-dissipating structures currently used in lighting devices have complicated parts and designs, and in addition to causing inconvenience in assembly, the appearance thereof also gives people a sense of clutter. Even worse, Many mechanical devices are often constructed to meet the requirements of heat dissipation or styling, and are not fully compliant with electrical safety regulations and are not commercially available.

In summary, how to use the lighting device of the light-emitting diode, while taking into account heat dissipation, aesthetics and compliance with electrical regulations, is an urgent need of the industry.

An object of the present invention is to provide a lighting device which is provided with a special structure on a heat dissipating body, so that the overall heat dissipating effect of the lighting device can be improved.

Another object of the present invention is to provide a lighting device which has a hidden locking design on the assembly of the overall structure, no exposed composite components, etc., except for the aesthetics, since the assembled lighting device has a tamper-proof The advantage, if forced to dismantle, is bound to proceed in a destructive manner leaving traces. Therefore, the lighting device of the present invention can ensure product consistency from the time of shipment to the purchase of the consumer by the consumer.

It is still another object of the present invention to provide a lighting device having a drive circuit and mechanism design that has increased creepage distance, making the lighting device of the present invention more compliant with increasingly stringent electrical safety regulations.

To achieve the above objective, the present invention discloses a lighting device including a first heat sink, a second heat sink, a light source module, a light transmitting component, and a driving circuit module. The first heat dissipating body has an inner peripheral edge and an inner bottom surface to form an accommodating space on the first heat dissipating body; the second heat dissipating body has a top end and a bottom end opposite to the top end, and a through hole is formed, extending from the top end to the bottom end The second heat dissipation system is configured to be coupled to the first heat sink by the top end; the light source module is disposed on the inner bottom surface of the first heat sink; the light transmitting component is disposed in the receiving space of the first heat sink and covering the light source module; Drive circuit module setting The through hole of the second heat dissipating body is electrically connected to the light source module and drives the light source module.

The above objects, technical features, and advantages will be more apparent from the following description.

1‧‧‧Lighting device

11‧‧‧First heat sink

110‧‧‧inside circumference

112‧‧‧ inside bottom

1120‧‧‧First Link Hole

1122‧‧‧Second connection hole

114‧‧‧ accommodating space

116‧‧‧ Ribs

118‧‧‧ hole slot

12‧‧‧Second heat sink

120‧‧‧Top

1202‧‧‧ third connection hole

122‧‧‧ bottom

124‧‧‧through holes

126‧‧‧Fins

13‧‧‧Light source module

130‧‧‧Fourth link

132‧‧‧ circuit board

134‧‧‧Lighting elements

14‧‧‧Lighting components

140‧‧‧fasteners

15‧‧‧Drive Circuit Module

150‧‧‧Shell body

1501‧‧‧First end

1502‧‧‧second end

1503‧‧‧ openings

152‧‧‧ cover

154‧‧‧electrode column

156‧‧‧Drive circuit board

1561‧‧‧Rectifier Module

1562‧‧‧Electromagnetic interference filter module

1563‧‧‧large capacitance

1564‧‧‧Transition module

1565‧‧‧Transformer module

1566‧‧‧Lighting diode

16‧‧‧Connected parts

1 is a schematic view of a lighting device of the present invention; 2A-2B is an exploded view of the lighting device of the present invention; FIG. 3A is a top view of the lighting device of the present invention; and FIG. 3B is a lighting device of the present invention; 3A is a cross-sectional view taken along the line BB'; FIG. 3C is a cross-sectional view taken along line C-C' of the illuminating device of the present invention in FIG. 3A; and FIG. 4 is a driving circuit mode of the present invention. A schematic diagram of the decomposition of the group; and Figure 5 is a circuit diagram of the driving circuit board of the present invention.

The illuminating device of the present invention will be explained below by way of examples, however, the description of the embodiments is merely illustrative of the invention and is not intended to limit the invention. It must be specifically stated that in the following embodiments, the overall structure of the lighting device will be described first, and then the details of its structure, heat dissipation effect and compliance with electrical safety regulations will be described in detail.

First, please refer to FIG. 1 and FIG. 2A-2B at the same time, wherein FIG. 1 is the present invention. A schematic view of the illuminating device 1 and an exploded view of the illuminating device 1 are shown in Figs. 2A-2B. As shown in FIG. 2A , the illumination device 1 includes a first heat sink 11 , a second heat sink 12 , a light source module 13 , a light transmissive element 14 , a drive circuit module 15 , and a joint 16 . The aforementioned components are assembled through the relative positions shown in FIG. 2A.

Please refer to Figure 2B for further reference. The first heat dissipating body 11 has an inner peripheral edge 110 and an inner bottom surface 112, and defines an accommodating space 114 for accommodating the light source module 13 so that the light source module 13 can be fixedly disposed on the first heat sink. 11 on the inner bottom surface 112. The light transmissive element 14 is disposed in the accommodating space 114 of the first heat dissipating body 11 to cover and protect the light source module 13 . Specifically, the first heat dissipating body 11 is further formed with at least one first connecting hole 1120 on the inner bottom surface 112, and the light transmitting element 14 has at least one fastener 140 corresponding to the at least one first connecting hole 1120, so that the light is transmitted. The component 14 can be engaged with the at least one first connecting hole 1120 through the at least one fastener 140 to fix the light transmitting component 14 to the first heat sink 11 . It should be particularly emphasized that the number of fasteners 140 in this embodiment is four. Therefore, the first connection hole 1120 corresponding to the fastener 140 is also set to four. However, it is not intended to limit the number and manner of engagement.

The second heat sink 12 has a top end 120 and a bottom end 122 opposite to the top end 120, and a through hole 124 extending from the top end 120 to the bottom end 122 is formed at the center. The through hole 124 is for receiving the driving circuit module 15 , in other words, the driving circuit module 15 is disposed and penetrates through the through hole 124 of the second heat sink 12 .

After the driving circuit module 15 is fixed to the through hole 124 of the second heat dissipating body 12, the second heat dissipating body 12 can be further joined to the first heat dissipating body 11 by the top end 120. In detail, the first heat sink 11 is formed with at least one second connecting hole on the inner bottom surface 112 The second heat sink 12 is formed with at least one third connecting hole 1202 corresponding to the at least one second connecting hole 1122. The light source module 13 is formed with at least one fourth connecting hole 130 corresponding to the second connecting hole 1122. . The light source module 13 is fixed to the inner bottom surface 112 of the first heat sink 11 through the at least one second connecting hole 1122 and the at least one fourth connecting hole 130, and then passes through at least one second connecting hole. 1122 and at least one third connecting hole 1202, the first heat sink 11 and the second heat sink 12 are locked, so that the first heat sink 11, the second heat sink 12 and the light source module 13 can be used. Combined and fixed.

It should be particularly emphasized that in the present embodiment, the coupling member 16 is four screws as shown in the figure. Therefore, the second coupling hole 1122 can be similarly set to four according to the number of screws of the coupling member 16; similarly The third connecting hole 1202 of the second heat sink 12 and the fourth connecting hole 130 of the light source module 13 are also correspondingly arranged in four. However, the type and number of the joint members and the number of the joint holes are merely for illustration, and are not intended to limit the manner of combination.

For a detailed combination, please refer to the 3A-3C diagram. Figure 3A is a top view of the illumination device 1, 3B is a cross-sectional view of the B-B' in the 3A, and 3C is a C in the 3A. -C' section view. It can be clearly seen from FIG. 3B that the connecting holes of the above-mentioned respective parts are formed inside the respective components. Therefore, the bonding member 16 can complete the first heat dissipating body 11 and the second heat dissipating body 12 in the interior of the illumination device 1 as a whole. The light source module 13 and the light transmissive element 14 are combined; and as shown in FIG. 3C, the fastener 140 is coupled to the first heat sink 11 by means of a hook. According to the above, since the locking component (such as the fastener 140 and the coupling member 16) is located inside the lighting device 1 after assembly, the lighting device 1 cannot see the way and the combination of the lighting device 1 from the appearance, thereby achieving the purpose of tampering. At the same time make the loading The overall appearance is more beautiful.

The light source module 13 includes a circuit substrate 132 and at least one light emitting element 134 disposed on the circuit substrate 132, and the light transmitting element 14 is preferably partially formed to include at least one corresponding to the at least one light emitting element 134. A lens structure (not shown) is used to further concentrate the light projected by the light-emitting element 134 to enhance the light intensity or adjust the overall light pattern. It should be particularly emphasized that in this embodiment, the light-emitting element 134 is four light-emitting diodes, so the light-transmitting element 14 can be designed to include four corresponding lens structures to respectively converge the light projected by the four light-emitting diodes. . The light transmissive element 14 can be made of polycarbonate (PC) or acrylic (PMMA). However, the above-described number of components and materials are not intended to limit the present invention.

Referring to FIG. 2B again, the first heat dissipating body 11 can be designed to have a plurality of ribs 116 disposed at a peripheral region of the first heat dissipating body 11 , and a plurality of holes 118 can be defined between the ribs 116 . The second heat sink 12 has a plurality of fins 126 disposed on the peripheral region of the second heat sink 12, and the number and position of the fins 126 are distributed corresponding to the ribs 116, when the first heat sink After assembly with the second heat sink 12, structural consistency can be obtained. Through the above structure, the area where the heat sink is in contact with the air can be greatly increased to enhance the heat dissipation effect. Similarly, the materials of the first heat dissipating body 11 and the second heat dissipating body 12 are selected from a preferred heat dissipating metal, such as aluminum or copper, but are not limited thereto.

Next, please refer to FIG. 4 , which is an exploded view of the driving circuit module 15 . The driving circuit module 15 includes a housing body 150, a cover 152, an electrode post 154, and at least one driving circuit board 156. The housing body 150 has a first end 1501 and a second end 1502 opposite the first end 1501, and is formed at the first end 1501. An opening 1503 is provided. The cover 152 is disposed at the first end 1501 of the housing body 150 for closing the opening 1503 and defining an internal space together with the housing body 150. The electrode post 154 is disposed on the housing body 150. The second end portion 1502 is disposed on the internal space and electrically connected to the electrode post 154 and the light source module 13 at the same time. In this way, with the above arrangement, the creepage distance can be increased between the housings to comply with electrical safety regulations. It should be particularly noted that in this embodiment, two driving circuit boards 156 are provided and connected in a mutually perpendicular manner, so that the number of electronic components on the circuit board can be increased by such a structure, and The overall volume of the drive circuit module 15 is relatively reduced.

Preferably, in order to prevent the second heat sink 12 and the driving circuit module 15 from being rotated or loosened during assembly, the second heat sink 12 and the driving circuit module 15 can be designed. . In detail, the through hole 124 is tapered from the top end 120 toward the bottom end 122, and the housing body 150 of the driving circuit module 15 is also tapered from the first end portion 1501 toward the second end portion 1502; more preferably, the driving circuit The housing body 150 of the module 15 and the through hole 124 substantially exhibit a non-cylindrical shape. As a result, the driving circuit module 15 can be easily placed in the through hole 124 without being rotated or loosened due to the above structural limitations, and the assembly can be easily positioned.

Next, please refer to FIG. 5 , which is a power supply design used in the driving circuit module 15 . Mainly input AC to a rectifier module 1561, and then an electromagnetic interference filter module 1562 eliminates electromagnetic interference, and then a large capacitor 1563 converts the full-wave mode of the alternating current into a DC waveform, and then a conversion module 1564 The high frequency switching voltage allows a transformer 1565 to be charged and discharged to convert the output, and to control the output voltage and current. Finally, the transformer 1565 converts the high voltage into a low voltage output to an illuminating two by electromagnetic induction. The pole body 1566 is such that the light-emitting diode 1566 can obtain a normal operating power source.

Since the illumination device provided by the invention has the above-mentioned characteristics in structure, it can simultaneously achieve the advantages that the locking structure is not exposed, the heat dissipation effect is good, and the electrical regulations are met.

The embodiments described above are only intended to illustrate the embodiments of the present invention, and to explain the technical features of the present invention, and are not intended to limit the scope of the present invention. Any changes or equivalents that can be easily made by those skilled in the art are within the scope of the invention, and the scope of the invention should be determined by the scope of the claims.

11‧‧‧First heat sink

12‧‧‧Second heat sink

13‧‧‧Light source module

14‧‧‧Lighting components

15‧‧‧Drive Circuit Module

16‧‧‧Connected parts

Claims (17)

A illuminating device includes: a first heat dissipating body having an inner peripheral edge and an inner bottom surface to form an accommodating space on the first heat dissipating body, wherein the first heat dissipating body further has a plurality of ribs, and the ring is disposed on the a peripheral portion of the first heat dissipating body, a plurality of holes may be defined between the ribs; a second heat dissipating body having a top end and a bottom end opposite to the top end, the second heat dissipating body forming a consistent perforation Extending from the top end to the bottom end, the second heat dissipation system is coupled to the first heat sink by the top end; a light source module is disposed on the inner bottom surface of the first heat sink; a light transmitting component is disposed on the bottom The light source module is disposed in the accommodating space of the first heat dissipating body; and a driving circuit module is disposed in the through hole of the second heat dissipating body for electrically connecting to the light source module and driving the light source module group. The illuminating device of claim 1, wherein the first heat dissipating body is further formed with at least one first connecting hole on the inner bottom surface, and the light transmitting component has at least one fastener corresponding to the at least one first The hole is connected, whereby the light transmitting element is fixed to the first heat sink. The illuminating device of claim 2, further comprising at least one coupling member disposed in the accommodating space for combining the first heat sink and the second heat sink. The illuminating device of claim 3, wherein the first heat sink is formed with at least one second connecting hole, and the second heat sink is formed with at least one corresponding to the second connecting hole a third connecting hole, the at least one connecting member is locked in the at least one second connecting hole and the at least one third connecting hole. The illuminating device of claim 4, wherein the light source module is formed with at least one fourth connecting hole corresponding to the second connecting hole, and the at least one connecting member is disposed, thereby the light source module Fixed to the inner bottom surface. The lighting device of claim 3, wherein the at least one coupling member comprises a screw. The illuminating device of claim 1, wherein the second heat dissipating body has a plurality of fins, and the ring is disposed at a peripheral region of the second heat dissipating body, and the fins are distributed corresponding to the ribs. The lighting device of claim 1, wherein the first heat sink and the second heat sink are made of one of aluminum and copper. The lighting device of claim 1, wherein the light source module comprises a circuit substrate and at least one light emitting element disposed on the circuit substrate. The illumination device of claim 9, wherein the at least one light emitting element comprises a light emitting diode (LED). The illuminating device of claim 9, wherein the light transmissive element further comprises at least one lens structure, wherein the at least one lens structure is partially formed in the light transmissive element corresponding to the at least one light emitting element. The lighting device of claim 1, wherein the light transmissive element is made of polycarbonate (PC) or acrylic (PMMA). The lighting device of claim 1, wherein the through hole tapers from a top end of the second heat sink toward the bottom end. The lighting device of claim 13, wherein the driving circuit module comprises: a casing body having a first end and a second opposite to the first end The first end portion defines an opening; a cover body is disposed at the first end of the housing body to close the opening, and defines an internal space with the housing body; an electrode post is disposed on the The second end of the housing body; and at least one driving circuit board disposed in the internal space, electrically connected to the electrode post and the light source module. The illumination device of claim 14, wherein the housing system tapers from the first end toward the second end. The lighting device of claim 14, wherein the outer casing of the outer casing cooperates with the shape of the through hole. The lighting device of claim 14, wherein the outer casing body and the through hole substantially exhibit a non-cylindrical shape.