TW202001142A - Lighting structure - Google Patents

Abstract

A lighting structure comprises a base, an adapting component, and a lighting module. The base includes a base body having a front surface and a rear surface positioned oppositely, a heat-dissipating portion, and a pillar projecting from the front surface of the base body, wherein the pillar has a supporting platform. The adapting component mounts on the front surface of the base body, and positioned between the supporting platform and the front surface of the base body. The lighting module includes a substrate disposed on the supporting platform and a LED assembly formed on the substrate. A first region, a second region and a third region are determined virtually on the substrate and partially overlapped, and the center points of the first region, the second region and the third region are positioned correspondingly to the central axis of the pillar. Also, the LED assembly at least includes a plurality LEDs, wherein the LEDs are arranged in the union of the first, second and third regions, and at least one of the LEDs is arranged in the intersection of the first, second and third regions.

Description

Light emitting structure

The invention relates to a light-emitting structure, especially a light-emitting structure with a light-emitting diode.

At present, most car bulbs are halogen lamps, and a small number of hernia lamps are used. The halogen lamp is filled with halogen elements or halides in the incandescent lamp, so that the brightness is increased to 1.5 times that of the ordinary incandescent lamp, and the service life is also 2-3 times that of the ordinary incandescent lamp. Its advantage is low cost, generally considering the price Most economic cars use halogen lamps as headlights. However, the tungsten filament wick of the halogen bulb will gradually age with the use time. Generally speaking, the brightness of the halogen bulb used for more than three years will obviously deteriorate. And the high heat generated by the halogen bulb will accelerate the aging of the reflective surface inside the lamp, so the brightness will be significantly reduced after a period of use.

The xenon lamp is a headlight containing xenon, also known as a high-intensity discharge gas lamp (HID Intensity Discharge Lamp), which is filled with high-pressure inert gas-Xenon (Xenon) in the quartz lamp tube to replace the traditional filament, in two sections of electrodes There are mercury and carbon compounds on the ballast to stimulate the xenon to emit light with a high voltage of 23000 volts. The light color of the xenon lamp is close to the sun and the brightness is high, but it needs additional equipment (such as start controller, lens...) To match, the cost is higher, and it is generally installed in high-end vehicles. However, because the brightness of the xenon lamp is too high, such as the projection of the high beam lamp will affect the line of sight of the driving and cause danger, so there are many The laws of the countries in the region prohibit the use of xenon bulbs for high beams. Furthermore, the xenon lamp is filled with high-pressure xenon gas (a toxic gas) of up to 6 atmospheres and a certain amount of mercury and metal halides. If a crack occurs, May cause harm to people, vehicles and ecology.

The invention relates to a light-emitting structure. Through the design of the embodiment, the light-emitting structure using the light-emitting diode can be adapted to the application of the vehicle bulb.

The invention provides a light-emitting structure, which includes a base, a fixing member and a lighting module. The base includes a base body having a front surface and a rear surface opposite to each other; a heat dissipation portion; and a column extending from the front surface of the base, and the column has a bearing platform. The fixing member is arranged on the front surface of the seat body and is located between the bearing platform and the front surface. The light emitting module includes a substrate on the carrier platform, and an LED component above the substrate. The substrate includes a first region, a second region, and a third region that partially overlap, and the center points of the first, second, and third regions are correspondingly located on the central axis of the cylinder. The LED assembly includes at least a plurality of LEDs, wherein the arrangement of the LEDs is correspondingly located in the union of the first, second, and third regions, and the at least one arrangement of the LEDs is correspondingly located in the first, second, and third The intersection of the three regions.

In order to have a better understanding of the above and other aspects of the present invention, the preferred embodiments are described below in conjunction with the attached drawings, which are described in detail as follows:

The embodiment of the present disclosure proposes a light-emitting structure, particularly a light-emitting structure with a light-emitting diode (LED), which can be applied to a vehicle light bulb. The embodiments of the present disclosure will be described in detail below with reference to the attached drawings. It should be noted that the structure and content proposed in the embodiments are for illustrative purposes only, and the scope of protection disclosed in the present disclosure is not limited to the described state. The same or similar reference numerals in the embodiments are used to indicate the same or similar parts. It should be noted that this disclosure does not show all possible embodiments. The structure can be changed and modified without departing from the spirit and scope of this disclosure to meet the needs of practical applications. Therefore, other implementations not mentioned in this disclosure may also be applicable. Furthermore, the drawings have been simplified to clearly explain the contents of the embodiments, and the size ratios on the drawings are not drawn according to the actual products. Therefore, the description and illustrations are only used to describe the embodiments, not to limit the scope of disclosure of the present disclosure.

FIG. 1 is a schematic diagram of a light-emitting structure according to an embodiment of the disclosure. The light-emitting structure includes a base 10, a fixing member 20 and a light-emitting module. FIG. 2 is a schematic diagram of the fixing member 20, the light emitting module 30 and the base 10 in the light emitting structure of FIG. 1 after being combined. Please also refer to Figures 1 and 2.

In one embodiment, the base 10 includes a base body 11, a heat dissipation portion 13 and a cylinder 15, wherein the base 11 has a front surface 112 and a rear surface 114 opposite to each other, and the cylinder 15 is from the base 11 The front surface 112 extends, and the cylinder 15 has a bearing platform 151. The fixing member 20 may be disposed on the front surface 112 of the base 11 and between the carrying platform 151 and the front surface 121. The light-emitting module 30 includes a substrate 31 and a light-emitting diode (LED) assembly 32, wherein the substrate 31 is located on the supporting platform 151 of the pillar 15. An LED component 32 is located above the substrate 31, and the LED component 32 includes at least a plurality of LEDs (such as the LED 320 shown in FIG. 2).

In one embodiment, the fixing member 20 disposed at the front surface 112 of the base 11 has a first surface 201 and a second surface 202 opposite to each other. The two surfaces 202 are disposed on the front surface 112 of the base 11.

When the light-emitting structure of the present disclosure is applied to a vehicle bulb, the fixing member 20 provided in the embodiment may be one of various adapter rings with different connector specifications for the vehicle bulb. For example, in two of the examples, the fixing member 20 may be a first adapter ring or a second adapter ring. When the LED light emitting structure and a projection module of the embodiment are assembled, the first or second adapter ring For example, the first surface 201 is in contact with the housing of the projection module to form a vehicle lamp of corresponding specifications, for example, a vehicle lamp of H11 connector specification or an H7 connector specification. Figures 3A and 3B are schematic diagrams showing an adapter ring of H11 connector specification and an adapter ring of H7 connector specification, respectively.

Therefore, the base 10 proposed in the embodiment can be shared by adapter rings with different connector specifications (i.e., fixing members 20/20'), and is not limited to the H11/H7 adapter rings shown in the embodiments. Furthermore, the present disclosure does not limit the arrangement of the fixing member 20 and the base 10, and the fixing member 20 and the base 10 (for example, the base 11) may be integrally formed; or the fixing member 20 may be detachable. It is assembled on the column 15 of the base 10 and assembled on the front surface 112 of the base 11 in a manner. In addition, in one embodiment, the base 10 is, for example (but not limited to), formed of die-cast aluminum.

In practical applications, different designs with heat dissipation effects can be used as the heat dissipation portion of the base 10 in the light-emitting structure disclosed. The heat dissipation portion and the seat body 11 may be integrally formed, or assembled and assembled from different components.

As shown in FIG. 1, in one embodiment, the base 11 of the base 10 has a side surface 115 connecting the front surface 112 and the rear surface 114 respectively, and the side surface 115 has a plurality of fin elements 130 to The heat dissipation portion 13 as the structure shown in FIG. 1 is used to help quickly dissipate the heat energy generated when the LED emits light and extend the service life of the light-emitting structure. In the first figure, the heat dissipation portion 13 and the seat body 11 are integrally formed. The seat body 11 in FIG. 1 is a cylindrical seat body, but it can also be a seat body of other shapes. In the embodiment, the appearance of the seat body 11 and the fin 130 can also be adapted and changed according to the design requirements in actual application, and this disclosure does not limit this much.

FIG. 4 is a schematic diagram of a base and a heat dissipation portion in a light-emitting structure according to another embodiment. In another embodiment, the heat dissipation portion 17 includes a plurality of heat dissipation fins 170 corresponding to the rear surface 114 of the base 11. In another embodiment shown in FIG. 4, the base 10 further includes another pillar 16 extending from the rear surface 114 of the base 11, and a plurality of heat sinks 170 of the heat dissipation portion 17 are sleeved on the pillar 16. Of course, other methods of providing heat sinks can also be applied to form the base 10 with heat dissipation structure. The appearance of the seat body 11 can be designed according to the way other components such as the heat sink 170 cooperate with it in actual application. For example, the length and shape of the other cylinder that can be sleeved with the heat sink can be seen in the actual application. Modification and change based on the state and size. This disclosure is not particularly limited.

When the light-emitting structure of the embodiment is applied to a light bulb for a vehicle, when it is matched with a projection module (for example, a shell with a reflective layer on the inner surface of the cover), the brightness and light type of the light emitted must conform to the lamp specifications. For example, it conforms to the near and far lamp specifications of European regulations (ECE R112) and American regulations (FMVSS 108). The embodiment proposes a design for the LED arrangement of the light emitting module 30.

FIG. 5 is a schematic diagram of a light emitting structure according to another embodiment of the disclosure. In FIG. 5, the fixing member 20 ′ shown in FIG. 3B is provided on the seat body 11, and the first surface 201 ′ of the fixing member 20 ′ is parallel to an xy plane, and the column 15 A central axis C ₀ extends along the z-axis direction, and the substrate 31 of the light-emitting module 30 is parallel to an xz plane. Among them, the LED components 32 of the light emitting module 30 (for example, including a plurality of LEDs 320 as shown in FIG. 2), and the light emitting surfaces of the LEDs are parallel to the xz plane and emit light upward (ie, away from the substrate 31). The light emitting angle is generally about 120 degrees. FIG. 6 is a schematic diagram of the light emitting module 30 on the yz plane in the light emitting structure shown in FIG. 5, wherein one of the light emitting surfaces of the LED 320 is approximately flush with the central axis C ₀ of the pillar 15, Or there is a distance of about ±5mm.

Furthermore, in one embodiment, the substrate 31 of the light emitting module 30 is, for example, a metal-based printed circuit board (Metal Core PCB, MCPCB), and the LED assembly 32 further includes a base 32S to arrange the LEDs 320 in the array The base 32S is disposed on the metal-based printed circuit board 31. The base 32S is, for example, a ceramic having a low thermal expansion coefficient as a material. In practical applications, the light emitting module 30 further includes a driving circuit (not shown), which is electrically connected to the LEDs 320.

In addition to the LED lighting upward, the embodiment proposes a design for the LED arrangement as follows. FIG. 7 is a schematic diagram of determining an LED arrangement area in the light-emitting structure of an embodiment of the present disclosure. According to an embodiment, the substrate 31 of the light emitting module 30 includes a first area A1, a second area A2, and a third area A3 that partially overlap, and the first area A1, the second area A2, and the third area A3 The central points O1, O2, and O3 are correspondingly located on the central axis C ₀ of the cylinder 15.

In the embodiment, the center points O1, O2, and O3 of the first area A1, the second area A2, and the third area A3 are respectively perpendicular to the first surface 201' of the fixing member 20' (that is, the position of the line Ls) The distance d1, the second vertical distance d2, and the third vertical distance d3. In one embodiment, the first vertical distance d1, the second vertical distance d2, and the third vertical distance d3 (along the z-axis) are respectively about 28.4 mm ± 0.2 mm. Furthermore, in an embodiment, the center points O1, O2, and O3 of the first area A1, the second area A2, and the third area A3 may (but are not limited to) completely overlap, as shown in FIG. 7. When the fixing member is engaged with a projection module, the first surface 201' of the fixing member 20' (that is, the position of the line Ls) can abut the housing 40 of the projection module.

In an embodiment, the first area A1 has a length x1 and a width y1, the second area A2 has a length x2 and a width y2, and the third area A3 has a length x3 and a width y3. The ratio is, for example, x1<y1, x2= y2, x3>y3. In an embodiment, the ratios are, for example, x1=y3 and y1=x3. In an embodiment, the first area A1 has a length x1=1.6 mm and a width y1=14 mm; the second area A2 has a length x2=4.4 mm and a width y2=4.4 mm; and the third area A3 has a Length x3=14 mm and width y3=1.6 mm. Of course, as a person of ordinary knowledge knows, these data are for illustrative purposes only. The scope of the present disclosure is not limited to these data, and the actual size can also be appropriately modified and changed according to the application conditions.

According to the embodiment of the present disclosure, the arrangement of the LEDs of the LED assembly 32 is correspondingly located in the union of the first area A1, the second area A2, and the third area A3, and the arrangement of at least one of the LEDs is correspondingly in the first region A1, at the intersection of the second region A2 and the third area A3 (for example, a plurality of LED's placed as shown in Fig. 7 in the region a _L). The arrangement of the plurality of LEDs disclosed in this disclosure can be arranged and changed in a variety of ways.

FIG. 8A is a schematic diagram of an LED arrangement in an embodiment of the disclosure, in which a plurality of LEDs 320 (for example, 5 LEDs 320, but not limited to 5) are arranged in a line and are aligned with the central axis C of the cylinder 15 ₀ (Z-axis direction) is vertical. FIG. 8B is a schematic diagram of another LED arrangement in an embodiment of the disclosure, in which a plurality of LEDs 320 (for example, 3 LEDs, but not limited to 5) are arranged in a line and are aligned with the central axis C of the cylinder 15 ₀ (Z-axis direction) parallel. FIG. 8C is a schematic diagram of another LED arrangement according to an embodiment, in which the number of LEDs is at least 3 or more (FIG. 8C shows 4 LEDs 320), and at least 2 of the LEDs The LEDs are arranged in a line along the central axis C ₀ (Z-axis direction) of the column 15. Of course, the present disclosure is not limited to the arrangement shown in FIGS. 8A-8C, and other arrangements that meet the restrictions can also be applied.

In addition, the actual position and size of the arrangement of the LED 320 can also be appropriately modified and changed according to the actual application conditions, as long as all the LED 320 conform to the arrangement of the first to third areas A1-A3, and at least one of them The condition that the LED 320 is located at the intersection of the first to third regions A1-A3 is sufficient. In an example of FIG. 8A, for example, five LED 320 is placed in an area A _L, then an embodiment, the central point of area A _L, for example (but not limited to a) and 20 'of the first fixing member surface 201 '(That is, the position of line Ls) is vertically separated (ie parallel to the Z-axis direction) by about 28.4 mm, and perpendicular to the central axis C _{0 of the} cylinder 15 (ie parallel to the X-axis direction) by about 1.5 mm; and area A _L Length L1=5.9mm and width W1=1.15mm.

Taking Figure 8B as an example, for example, placing three LEDs, including LED 320-1, LED 320-2, and LED 320-3, in a direction parallel to the central axis C ₀ (Z-axis direction) of the cylinder 15, then one In the embodiment, the center points of the three LEDs (320-1 to 320-3) are, for example (but not limited to), corresponding to the central axis C _{0 of the} cylinder 15 (that is, the center point is perpendicular to the central axis of the cylinder 15 C ₀ is 0mm), and the center points of the three LEDs (320-1 to 320-3) are, for example (but not limited to), perpendicular to the first surface 201' of the fixing member 20' (that is, the position of the line Ls) The distance (ie parallel to the Z-axis direction) is about 28.4mm, 27.2mm, and 26.0mm; and the length and width of the three LEDs (320-1 to 320-3) are (but not limited to) 1.14mm.

Taking FIG. 8C as an example, for example, four LEDs (320-1 to 320-4) are arranged, then in one embodiment, the center point of the LED 320-1 is (but not limited to) the pillar 15 The left side of the central axis C ₀ and perpendicular to the central axis C _{0 is} about 1.2 mm; and the two central points of the LED 320-1 and the LED 320-2 are (but not limited to) the first surface 201' of the fixing member 20' (That is, the position of the line Ls) are at a vertical distance (ie parallel to the Z-axis direction) of about 29.6mm; and the two center points of the LED 320-2 and the LED 320-3, for example (but not limited to), both correspond to the cylinder 15 The central axis C _{0 is} set; and the two central points of the LED 320-3 and the LED 320-4, for example (but not limited to), are perpendicular to the first surface 201' of the fixing member 20' (that is, the position of the line Ls) The distance (ie parallel to the Z-axis direction) is about 28.4mm; the center point of the LED 320-4 is, for example (but not limited to), located to the right of the central axis C ₀ of the cylinder 15 and perpendicular to the central axis C _{0 by} about 1.2mm; The length and width of the four LEDs (320-1 to 320-4) are (but not limited to) 1.14mm.

Furthermore, the light pattern generated by the arrangement shown in FIG. 8C is suitable for left-hand drive vehicles, for example. If the embodiment of the present disclosure is to be applied to right-hand drive vehicles, the LED shown in FIG. 8C is arranged to The central axis C _{0 of the} cylinder 15 can be arranged in a mirror direction (that is, the LED on the upper left in Fig. 8C moves to the upper right, and the LED on the lower right moves to the lower left).

The embodiment also proposes one of the designs for the brightness part of the LED. In one embodiment, at least one of the LEDs correspondingly located at the intersection of the first area A1, the second area A2, and the third area A3 has a maximum brightness. In an example, for example, at least one of the LEDs has a brightness greater than or equal to 150 lm/mm ² , and the other LEDs have a brightness less than 150 lm/mm ² but a brightness greater than 80 lm/mm ² . In yet another example, for example, at least one of the LEDs has a brightness greater than or equal to 150 lm/mm ² , and the other LEDs have a brightness less than 150 lm/mm ² but greater than 80 lm/mm ² .

In addition, in actual applications, the structure as described above can also be changed according to the application requirements to enhance the heat dissipation effect. FIG. 9A is a schematic diagram of a light-emitting structure that enhances heat dissipation according to another embodiment of the disclosure. FIG. 9B is a schematic diagram of the fixing member, the light-emitting module and the base in the light-emitting structure of FIG. 9A after being combined. In this embodiment, one end 31a of the substrate 31' extends toward the seat body 11 and contacts at least the seat body 11 to enhance heat dissipation. For example, an accommodating space 153 is correspondingly formed in the column body 15 so that one end 31a of the substrate 31' can be placed in the accommodating space 153 to be in contact with the seat body 11, such as contacting the front surface 112 of the seat body 11, making heat easier Dissipate through the heat dissipation portion (fin 130 as shown in FIG. 1 or heat sink 170 as shown in FIG. 4). The opening of the accommodating space 153 can be adjusted according to the actual application requirements (for example, corresponding to the size of the substrate 31').

In addition, in practical applications, the structure as described above can be changed according to the application requirements to enhance the light type. FIG. 10 is a schematic diagram of a light-emitting structure with enhanced light type according to a further embodiment of the disclosure. As shown in FIG. 10, the light-emitting module 30 may further include a light-transmitting mask 35 that covers the LEDs 320 above the substrate 31 to enhance the side light and allow the LED to emit light at a larger angle (in one embodiment, the original The light exit angle is 120 degrees, and the light exit angle after covering the light-transmitting mask 35 is at least greater than 140 degrees). In one embodiment, the material of the light-transmitting mask 35 is, for example, transparent glass, and is joined to the supporting platform 151 of the column 15, and its shape is, for example, arc-shaped or semi-circular.

Of course, as a person of ordinary knowledge can know, all the structural forms and values exemplified in the embodiments are for illustrative purposes only, and are not intended to limit the scope of the disclosure, such as the form of the fixing member, the form of the heat dissipating section LED The number of LEDs, the placement and arrangement of LEDs, the size of LEDs, the brightness of each LED, etc. can be modified and changed according to the application conditions. In summary, the light-emitting device with light-emitting diode (LED) provided in the embodiment can be applied to a car light bulb. Compared with the traditional car light bulb using halogen lamp and hernia lamp, the light-emitting device of the embodiment can be seen in different connector specifications Select the corresponding fixing member 20 (adapter ring) to cooperate to improve the flexibility of the application, and through appropriate design, as described in the light-emitting structure of the embodiment, the light-emitting structure not only emits light with a light type that really matches the lamp Standard, and the base of the light-emitting structure has a heat dissipation part, which can also efficiently dissipate the heat energy generated when the LED emits light. Furthermore, the use of light-emitting diode system in the embodiment has the advantages of small size, energy saving and environmental protection, and its service life (generally tens of thousands or even hundreds of thousands of hours) is more than half of the energy saving of tungsten filament lamps. Furthermore, turn on the LED There is no need for hot start, the light response is very fast, and it has many advantages such as low cost. Overall, the light-emitting device with light-emitting diode (LED) proposed in the embodiment is very suitable for vehicle bulbs, and has great market value in practical applications.

In summary, although the present invention has been disclosed as above with examples, it is not intended to limit the present invention. Those with ordinary knowledge in the technical field to which the present invention belongs can make various modifications and retouching without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be deemed as defined by the scope of the attached patent application.

10‧‧‧Base 11‧‧‧Seat body 112‧‧‧Front surface 114‧‧‧Rear surface 115‧‧‧‧Side surface 13‧‧‧radiating part 130‧‧‧fin part 170‧‧‧fins 16, 16 ‧‧‧Cylinder C ₀ ‧‧‧Cylinder central axis 151‧‧‧Bearing platform 153‧‧‧Accommodation space 20, 20′‧‧‧ Fixing parts 201, 201′‧‧‧‧First surface 202‧‧ ‧Second surface 30‧‧‧Light emitting module 31, 31′‧‧‧Substrate 31a‧‧‧One end 32‧‧‧Light emitting diode (LED) assembly 32S‧‧‧Base 320, 320-1, 320-2, 320-3, 320-4‧‧‧‧Light-emitting diode 35‧‧‧Translucent mask 40‧‧‧case A1‧‧‧first area A2‧‧‧second area A3‧‧‧ Third area A _L ‧‧‧Area where LEDs can be placed O1, O2, O3 ‧‧‧ Center point Ls‧‧‧ Line d1‧‧‧ First vertical distance d2‧‧‧ Second vertical distance d3‧‧‧ Third Vertical distance x1, x2, x3, L1‧‧‧ length y1, y2, y3, W1‧‧‧ width

FIG. 1 is a schematic diagram of a light-emitting structure according to an embodiment of the disclosure. FIG. 2 is a schematic diagram of the fixing member, the light emitting module and the base in the light emitting structure of FIG. 1 after being combined. Figures 3A and 3B are schematic diagrams showing an adapter ring of H11 connector specification and an adapter ring of H7 connector specification, respectively. FIG. 4 is a schematic diagram of a base and a heat dissipation portion in a light-emitting structure according to another embodiment. FIG. 5 is a schematic diagram of a light emitting structure according to another embodiment of the disclosure. FIG. 6 is a schematic diagram of the light emitting module on the yz plane in the light emitting structure shown in FIG. 5. FIG. 7 is a schematic diagram of determining an LED arrangement area in the light-emitting structure of an embodiment of the present disclosure. FIG. 8A is a schematic diagram of an LED arrangement according to an embodiment of the disclosure. FIG. 8B is a schematic diagram of another LED arrangement according to an embodiment. FIG. 8C is a schematic diagram of yet another LED arrangement in an embodiment. FIG. 9A is a schematic diagram of a light-emitting structure that enhances heat dissipation according to another embodiment of the disclosure. FIG. 9B is a schematic diagram of the fixing member, the light-emitting module and the base in the light-emitting structure of FIG. 9A after being combined. FIG. 10 is a schematic diagram of a light-emitting structure with enhanced light type according to a further embodiment of the disclosure.

10‧‧‧Base

11‧‧‧Body

112‧‧‧Front surface

114‧‧‧ Rear surface

115‧‧‧Side surface

13‧‧‧Cooling Department

130‧‧‧fin

15‧‧‧pillar

151‧‧‧ bearing platform

20‧‧‧Fixed parts

201‧‧‧First surface

202‧‧‧Second surface

30‧‧‧Lighting module

31‧‧‧ substrate

32‧‧‧ LED components

32S‧‧‧Dock

320‧‧‧ LED

Claims (17)

A light emitting structure includes: a base including a base body having a front surface and a rear surface opposite to each other; a heat dissipation portion; and a cylinder extending from the front surface and the cylinder It has a supporting platform; a fixing member, which is disposed on the front surface of the base body and is located between the supporting platform and the front surface; and a lighting module (Lighting module), including: a substrate, located on the carrier On the platform, the substrate includes a first area, a second area, and a third area that partially overlap, and the center points of the first, second, and third areas are corresponding to the central axis of the cylinder And an LED component located above the substrate, and the LED component includes at least a plurality of LEDs, wherein the arrangement of the LEDs is correspondingly located in the union of the first, the second, and the third regions, and the At least one arrangement of the LEDs is correspondingly located at the intersection of the first, second, and third regions. The light-emitting structure as described in item 1 of the patent application range, wherein the fixing member has a first surface and a second surface opposite to each other, the first surface faces the light-emitting module, and the second surface is disposed on the base On the front surface. The light emitting structure as described in item 1 of the patent application scope, wherein the center points of the first, second, and third regions completely coincide. The light emitting structure as described in item 1 of the patent application range, wherein the first region has a length x1 and a width y1, the second region has a length x2 and a width y2, and the third region has a length x3 and a width y3, where x1< y1, x2=y2, x3>y3. The light-emitting structure as described in item 4 of the patent application, where length x1 = width y3 and width y1 = length x3. The light emitting structure as described in item 1 of the patent application scope, wherein the first surface of the fixing member is parallel to an xy plane, the central axis of the column extends along the z-axis direction, and the substrate is parallel to a The xz plane, wherein the light emitting surfaces of the LEDs are parallel to the xz plane and emit light upward. The light emitting structure as described in item 1 of the patent application scope, wherein the LEDs are arranged in a line along the central axis and parallel to the central axis. The light emitting structure as described in item 1 of the patent application scope, wherein the LEDs are arranged in a line and perpendicular to the central axis. The light emitting structure as described in item 1 of the patent application scope, wherein the fixing member is clamped with a projection module, and the first surface of the fixing member is in contact with a housing of the projection module. The light emitting structure as described in item 1 of the patent application scope, wherein at least one of the LEDs correspondingly located at the intersection of the first, second, and third regions has a maximum brightness. The light-emitting structure as described in item 1 of the patent application scope, wherein the fixing member is detachably sleeved on the pillar and disposed on the front surface of the base. The light-emitting structure as described in item 1 of the patent application range, wherein the heat dissipation portion includes a plurality of heat dissipation fins, which are disposed at the rear surface of the seat body. The light emitting structure as described in item 1 of the patent application scope, wherein the base body has a side surface respectively connecting the front surface and the rear surface, and the side surface has a plurality of fin elements (fin elements) as the heat dissipation parts . The light-emitting structure as described in item 1 of the patent application scope, wherein the substrate is a metal-based printed circuit board, and the LED assembly further includes a base on which the LEDs are arranged, and the base is disposed on The metal-based printed circuit board. The light-emitting structure as described in item 1 of the patent application range, wherein one end of the substrate extends toward the base body and is at least in contact with the base body. The light-emitting structure as described in item 1 of the patent application scope, wherein the light-emitting module further includes a light-transmitting cover covering the LEDs above the substrate. The light-emitting structure as described in item 1 of the patent application range, wherein the light-transmitting mask is a transparent glass and is joined to the bearing platform of the pillar.

Images