TWI536091B - Lamp module of projector and fixing method of lamp module - Google Patents

Description

Projector lamp module and lamp module fixing method

The invention relates to a lamp module and a lamp module fixing method, and in particular to a lamp module and a lamp module fixing method of the projector.

The projector is a display device that can generate a picture anytime, anywhere. The imaging principle of the projector is to convert the illumination beam generated by the light source module into an image beam by a light valve, and then project the image beam through a lens onto a screen or a wall to form an image. With the advancement of projection technology and the reduction of manufacturing costs, the use of projectors has gradually expanded from commercial use to home use. In the light source module of the projector, the appearance of the light source modules of different specifications may be very similar, and the assembly structure may be the same, so that the user may mistakenly install the light source module into the projector that does not match the projector. This may cause the light source module to fail to emit light or insufficient luminous intensity to affect the normal operation of the projector, and may also cause the light source module to burn out.

Chinese Patent No. CN101354521 discloses a projection apparatus in which the optomechanical frame has two alignment components of the same structure and is assembled by the alignment of the two alignment components. Taiwan Patent No. TW455734 discloses a projector with a housing Alignment and stop devices allow for accurate positioning of the housing when assembled.

The invention provides a projector with a lamp module, which can prevent the user from accidentally installing the lamp module into the projector that is not matched with the projector.

Other objects and advantages of the present invention will become apparent from the technical features disclosed herein.

In order to achieve one or a part or all of the above or other purposes, an embodiment of the present invention provides a projector including a housing, a cylinder, a first lamp module, a light valve, and a lens. The housing has a plurality of first openings. The cylinder is disposed in the housing. The first light module is adapted to provide an illumination beam and has a second aperture. When the cylinder is disposed in one of the first openings, the cylinder extends into the first lamp module through the second opening, and the first lamp module is assembled to the casing. When the cylinder is inserted through the other of the first openings, an interference is formed between the cylinder and the first lamp module to prevent the first lamp module from being assembled to the casing. The light valve is located on the transmission path of the illumination beam and is adapted to convert the illumination beam into an image beam. The lens is located on the transmission path of the image beam and is adapted to convert the image beam into a projection beam.

Based on the above, the embodiment of the present invention has at least one of the following advantages. In the above embodiment of the present invention, the first openings of the housing of the projector respectively correspond to the lamp modules of different specifications, and the cylinders are The predetermined lamp module specifications are passed through one of the first openings of the housing. When the user installs the lamp module having the predetermined specification (such as the first lamp module described above) to the housing of the projector, The cylinder of one of the first openings is inserted into the second opening of the first lamp module and extends into the first lamp module through the second opening, so that the first lamp module can be smoothly Ground assembled to the housing. If the cylinder is changed to be placed on the other of the first openings according to another predetermined lamp module specification, when the user assembles the first lamp module to the housing of the projector The column penetrating the other of the first openings is opposite to the second opening of the first lamp module, so that interference between the column and the first lamp module is formed to avoid use. The first lamp module that does not meet the specifications of the other lamp module is mistakenly assembled to the housing. Accordingly, it is possible to prevent the user from accidentally installing the lamp module into the projector that does not match it.

The above described features and advantages of the invention will be apparent from the following description.

100‧‧‧Projector

110‧‧‧First Light Module

110a‧‧‧Second Assembly Department

112, 212‧‧‧ lamp holder

112a, 212a‧‧‧ grooves

114‧‧‧First stop

114a, 214a, 314a, 414a, 514a, 614a‧‧‧ locking holes

116, 142‧‧‧Lock attachments

120‧‧‧Light valve

130‧‧‧ lens

140‧‧‧ Subject

140a‧‧‧First Assembly Department

150‧‧‧shell

152‧‧‧ first surface

154‧‧‧ second surface

160‧‧‧Cylinder

162‧‧‧ head

164‧‧ Thread Department

170‧‧‧ Shell

210‧‧‧Second light module

214‧‧‧Second stop

310‧‧‧ Third Light Module

310a‧‧‧The third assembly department

314‧‧‧ Third stop

414‧‧‧fourth stop

514‧‧‧ fifth stop

614‧‧‧ sixth stop

A1‧‧‧First assembly hole

A2‧‧‧Second assembly hole

A3‧‧‧ third assembly hole

H1‧‧‧ first opening

H2‧‧‧Second opening

H3‧‧‧ third opening

H4‧‧‧4th opening

H5‧‧‧ fifth opening

H6‧‧‧6th opening

H7‧‧‧ seventh opening

L1‧‧‧ illumination beam

L2‧‧‧ image beam

L3‧‧‧projection beam

P1‧‧‧First Positioning Department

P2‧‧‧Second Positioning Department

P3‧‧‧ Third Positioning Department

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a block diagram of a projector in accordance with an embodiment of the present invention.

Figure 2 is a partial cross-sectional view of the projector of Figure 1.

3 is a perspective view of the main body of the projector of FIG. 2.

4 is a partial view showing the structure of the main body of the projector of FIG. 3.

Figure 5 is a partial perspective view of the first lamp module of Figure 2;

Figure 6 shows the cylinder of Figure 2 instead of being threaded through the other first opening.

Figure 7 is a perspective view of a portion of the components of the first lamp module of Figure 2;

FIG. 8 illustrates a first stop of the first lamp module of FIG. 5.

9A-9E illustrate stops corresponding to other lamp module specifications.

Figure 10 illustrates the cylinder of Figure 2 preventing the second lamp module from being assembled to the housing.

FIG. 11 illustrates the second lamp module of FIG. 10 assembled to the housing.

Figure 12 is a partial perspective view of the second lamp module of Figure 10;

Figure 13 is a perspective view showing a part of the second lamp module of Figure 12;

Figure 14 is a partial cross-sectional view showing the first assembly portion of the projector of Figure 2 in combination with the first assembly portion of the first lamp module.

FIG. 15 illustrates a third assembly portion of the first assembly portion of FIG. 14 in combination with the third lamp module.

The foregoing and other objects, features, and advantages of the invention will be apparent from the Detailed Description The directional terms mentioned in the following embodiments, such as "upper", "lower", "front", "back", "left", "right", etc., are only directions referring to the additional schema. Therefore, the directional terminology used is for the purpose of illustration and not limitation.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a block diagram of a projector in accordance with an embodiment of the present invention. Referring to FIG. 1 , the projector 100 of the embodiment includes a first lamp module 110 , a light valve 120 , and a lens 130 . The first light module 110 is adapted to provide an illumination light beam L1. The light valve 120 is located on the transmission path of the illumination light beam L1 and is adapted to convert the illumination light beam L1 into an image light beam L2. The lens 130 is located on the transmission path of the image light beam L2 and is suitable for The image beam L2 is converted into a projection beam L3.

Figure 2 is a partial cross-sectional view of the projector of Figure 1. Figure 3 is the projection of Figure 2 A perspective view of the main body of the machine. 4 is a partial view showing the structure of the main body of the projector of FIG. 3. Referring to FIG. 2 to FIG. 4 , the projector 100 of the embodiment further includes a main body 140 , a casing 150 , and a cylinder 160 . The housing 150 is disposed in the main body 140 and has a plurality of first openings H1 (shown as six in FIGS. 3 and 4). The cylinder 160 is disposed in the casing 150 through any of the first openings H1. The housing 150 can be a seat of a heat dissipating fan. However, the present invention is not limited thereto. The housing 150 can also be a part of a seat or other component of other components inside the projector 100.

Figure 5 is a partial perspective view of the first lamp module of Figure 2; The first lamp module 110 has a second opening H2 as shown in FIGS. 2 and 5. When the column 160 is disposed in one of the first openings H1 as shown in FIG. 3 and FIG. 4, the column 160 disposed on the housing 150 extends into the first lamp module through the second opening H2. 110, the first lamp module 110 is assembled to the housing 150 as shown in FIG. Figure 6 shows the cylinder of Figure 2 instead of being threaded through the other first opening. When the column 160 is disposed in the other of the first openings H1 as shown in FIG. 6, the column 160 cannot pass through the second opening H2 of the first lamp module 110, and the column 160 and the first lamp Interference is formed between the modules 110 to prevent the first lamp module 110 from being assembled to the housing 150.

Specifically, the first openings H1 of the projector 100 are disposed at different positions on the housing 150, and respectively correspond to different specifications of the lamp modules, and the column 160 is according to a predetermined lamp module specification. 2 corresponds to one of the first openings H1. When the user installs the lamp module (such as the first lamp module 110) having the predetermined specification to the housing 150 of the projector 100, one of the ones of the first openings H1 is inserted. The cylinder 160 will be located in the first lamp mode as shown in FIG. The second opening H2 of the group 110 extends into the first lamp module 110 through the second opening H2, so that the first lamp module 110 can be smoothly assembled to the housing 150. The assembler 100 inserts the column 160 through the first opening H1 of the housing 150 corresponding to the predetermined lamp module specification when the projector 100 is assembled.

If the cylinder 160 is replaced with another one of the first openings H1 as shown in FIG. 6 according to another predetermined lamp module specification, when the user installs the first lamp module 110 When the housing 150 of the projector 100 is reached, the column 160 that is inserted through the other of the first openings H1 is not located in the second opening H2 of the first lamp module 110 as shown in FIG. The interference between the column 160 and the first lamp module 110 is formed, that is, the column 160 that is inserted through the other of the first openings H1 can only be the same as the lamp module of the corresponding specification. The two openings H2 form an alignment. For example, through the alignment relationship between the first opening H1 of the housing 150 and the second opening H2 of the lamp module, the user is prevented from using the first lamp module 110 that does not meet the specifications of the other lamp module. Misassembled into the housing 150 within the projector 100. Accordingly, it is possible to prevent the user from accidentally installing the lamp module into the projector that does not match it, thereby causing damage to the projector.

Figure 7 is a perspective view of a portion of the components of the first lamp module of Figure 2; Please refer to FIG. 2 and FIG. 5 to FIG. 7 . In detail, the first lamp module 110 of the embodiment includes a socket 112 and a first stopper 114 . The socket 112 has a recess 112a (shown in Figures 5 and 7), and the first stop 114 is assembled to the socket 112 and is located opposite the recess 112a. The second opening H2 of the first lamp module 110 is formed on the first stopper 114. When the cylinder 160 is disposed in one of the first openings H1 as shown in FIG. 2, the cylinder 160 is adapted to protrude into the recess 112a of the socket 112 through the second opening H2. , the first A stop 114 is located between the socket 112 and the housing 150. When the column 160 is disposed in the other of the first openings H1 as shown in FIG. 6, the other one of the first openings H1 through which the column 160 is inserted is not The second opening H2 is located on the first stopper 114, and the first stopper 114 prevents the cylinder 160 from protruding into the recess 112a of the socket 112. In the present embodiment, the opening range of the recess 112a of the socket 112 covers the distribution range of the first openings H1 in the housing 150 so as to pass through any of the first openings H1. The cylinder 160 can be inserted into the recess 112a after passing through the second opening H2 of the lamp module of the corresponding specification as shown in FIG.

FIG. 8 illustrates a first stop of the first lamp module of FIG. 5. In the present embodiment, the first stopper 114 has a locking hole 114a and is fixed to the socket 112 by the locking hole 114a in cooperation with the locking attachment 116 (shown in FIG. 5). In other embodiments, the first stop member 114 can be coupled to the socket 112 by other suitable means, which is not limited in the present invention.

9A-9E illustrate stops corresponding to other lamp module specifications. 9A to 9E illustrate a second stopper 214, a third stopper 314, a fourth stopper 414, a fifth stopper 514, and a sixth stopper 614, respectively. The second stopper 214, the third stopper 314, the fourth stopper 414, the fifth stopper 514, and the sixth stopper 614 have a third opening H3, a fourth opening H4, and a fifth, respectively. The opening H5, the sixth opening H6, and the seventh opening H7 have locking holes 214a, 314a, 414a, 514a, 614a, respectively. The second opening H2 shown in FIG. 8 and the third opening H3, the fourth opening H4, the fifth opening H5, the sixth opening H6, and the seventh opening H7 shown in FIG. 9A to FIG. 9E respectively correspond to These first openings in different positions on the housing 150 shown in FIG. 3 or FIG. H1. The first stop member 114 similar to that shown in FIG. 8 can be assembled to the socket 112 of the first lamp module 110 through the lock attachment 116 and the locking hole 114a as shown in the above paragraphs and FIG. 5, and then the second stop The member 214, the third stopper 314, the fourth stopper 414, the fifth stopper 514, and the sixth stopper 614 can respectively pass through the locking holes 214a, 314a, 414a, 514a, 614a by using the lock attachments. It is assembled in other lamp modules of different specifications to ensure that the lamp modules of different specifications are installed in the projector matching the specifications. The following description is exemplified by the second stopper 214 shown in FIG. 9A.

Figure 10 illustrates the cylinder of Figure 2 preventing the second lamp module from being assembled to the housing. The second lamp module 210 shown in FIG. 10 is another lamp module different in size from the first lamp module 110, and the second stopper member 214 is assembled to the lamp holder 212 of the second lamp module 210. The second lamp module 210 has a third opening H3. The main body 140, the housing 150 and the cylinder 160 shown in FIG. 10 are the same as the main body 140, the housing 150 and the cylinder 160 shown in FIG. 2, and in FIG. 10, the cylinder 160 is worn as shown in FIG. One of the first openings H1 of the housing 150 is disposed, and at least one of the first openings H1 of the cylinder 160 is located at the second stop 214. The third opening H3, that is, the interference between the cylinder 160 and the second stopper 214 of the second lamp module 210 forms an interference to prevent the second lamp module 210 from being assembled to the housing 150. Thereby, the second lamp module 210 can be prevented from being mounted into the main body 140 of the projector that does not match its specifications.

FIG. 11 illustrates the second lamp module of FIG. 10 assembled to the housing. In FIG. 11, it is assumed that the main body 140 is changed to match the second lamp module 210 by being matched to the first lamp module 110. The main body 140, the housing 150 and the cylinder 160 shown in FIG. 11 are the same as the main body 140, the housing 150 and the cylinder 160 shown in FIG. 10, and in FIG. 11, the cylinder 160 The other one of the first openings H1 of the housing 150 is inserted as shown in FIG. 6 , and the other of the first openings H1 of the cylinder 160 is inserted. The second opening H3 is located in the second opening H3 of the second stopper 214, that is, the cylinder 160 extends into the second lamp module 210 through the third opening H3 of the second stopper 214, so that the second lamp module 210 can be Assembly to the housing 150. Thereby, the second lamp module 210 can be mounted into the body 140 of the projector that matches its specifications.

Figure 12 is a partial perspective view of the second lamp module of Figure 10; Figure 13 is a perspective view showing a part of the second lamp module of Figure 12; Referring to FIG. 10 to FIG. 13 , similar to the detailed structure of the first lamp module 110 , the lamp holder 212 of the second lamp module 210 has a recess 212 a (shown in FIGS. 12 and 13 ) and a second stop. The member 214 is assembled to the socket 212 and is located opposite the recess 212a. When the cylinder 160 is disposed in one of the first openings H1 as shown in FIG. 10, one of the first openings H1 through which the cylinder 160 is disposed is not located at the second end. The third opening H3 of the blocking member 214 prevents the second body 214 from extending through the third opening H3 and into the recess 212a of the socket 212. When the cylinder 160 is disposed in the other of the first openings H1 as shown in FIG. 11, the other pair of the first openings H1 through which the cylinder 160 is disposed is located at the other The third opening H3 of the second stopper 214 is adapted to extend into the recess 212a of the socket 212 through the third opening H3.

In the present embodiment, the first openings H1 on the housing 150 respectively correspond to different wattage lamp modules, respectively, and the first stopper 114, the second stopper 214, and the third stopper are respectively arranged. 314. The fourth stopper 414, the fifth stopper 514, and the sixth stopper 614 respectively correspond to the lamps of different wattages, for example, corresponding to the first openings H1. The modules, the different wattages are, for example, but not limited to, 190 watts, 210 watts, 240 watts, 250 watts, 260 watts, 310 watts, or other suitable wattage. Further, in the text or the pattern, the user may apply a specification (such as the wattage) corresponding to the lamp module of the projector in the text or the pattern, and may be disposed on the lamp module. Each of the stoppers 114, 214, 314, 414, 514, and 614 respectively prompts the user with a specification (such as a wattage) in a character or a pattern. For example, in the embodiment illustrated in FIG. 2 to FIG. 4 , when the projector 100 is assembled, the column 160 is inserted through one of the first openings H1 corresponding to the lamp module of the specification of 190 watts. . When the first lamp module 110 configured with the first stopper 114 corresponding to 190 watts is mounted to the casing 150 of the projector 100, the cylinder penetrating one of the first openings H1 160 will extend into the second opening H2 of the first stopper 114 and through the second opening H2 into the first lamp module 110 as shown in FIG. 2, so that the first stopper 114 is disposed first. The lamp module 110 can be smoothly assembled to the housing 150.

Referring to FIG. 2, FIG. 4 and FIG. 6, in the embodiment, the housing 150 has a first surface 152 and a second surface 154. The cylinder 160 is a screw and has a head 162 and A threaded portion 164. The threaded portion 164 is locked from the second surface 154 into any of the first openings H1 and protrudes from the first surface 152, and the threaded portion 164 extends toward the inside of the body 140 of the projector 100, and the head portion 162 is limited Located on the second surface 154. The projector 100 includes a housing 170 and the housing 170 shields the second surface 154 of the housing 150 such that the head 162 of the cylinder 160 is concealed within the housing 170 to prevent the cylinder 160 from being disassembled by the user.

Referring to FIG. 2, in the embodiment, the main body 140 of the projector 100 has a built-in There is a first assembly portion 140a. The first lamp module 110 has a second assembly portion 110a, and the first lamp module 110 is assembled to the first assembly portion 140a in the main body 140 by the second assembly portion 110a. In detail, when the cylinder 160 is inserted into one of the first openings H1 as shown in FIG. 2 and the cylinder 160 is located at the second opening H2 of the first stopper 114 and passes through the second When the opening H2 extends into the first lamp module 110, the first assembly portion 140a of the main body 140 and the second assembly portion 140b of the first lamp module 110 can be closely contacted with each other, and the first lamp module 110 is suitable for It is assembled on the housing 150. When the cylinder 160 is disposed in the other of the first openings H1 as shown in FIG. 6 and the cylinder 160 is not located in the second opening H2 of the first stopper 114, the cylinder 160 and the first An interference is formed between the lamp modules 110 to prevent the first assembly portion 140a of the main body 140 and the second assembly portion 110a of the first lamp module 110 from coming into contact with each other.

In the projector 100 of the present embodiment, the first assembly portion 140a and the housing 150 are, for example, different housings. However, in other embodiments, the first assembly portion 140a and the housing 150 may be the same housing. Do not limit this.

Figure 14 is a partial cross-sectional view showing the first assembly portion of the projector of Figure 2 in combination with the first assembly portion of the first lamp module. Referring to FIG. 14 , the first assembly portion 140 a of the embodiment has a first assembly hole A1 and at least one first positioning portion P1 (shown as two protrusions), and the second assembly of the first lamp module 110 The portion 110a has a second assembly hole A2 and at least one second positioning portion P2 (shown as two recesses). When the first positioning portion P1 and the second positioning portion P2 are fitted and positioned with each other as shown in FIG. 14, the first assembly hole A1 is located at the second assembly hole A2, so that the lock attachment 142 can smoothly pass through the alignment. The first assembly portion 140a and the second assembly portion 110a are assembled by assembling the hole A1 and the second assembly hole A2. Interlocking attached. In other embodiments, the first positioning portion P1 may be a concave portion and the second positioning portion P2 may be a convex portion, which is not limited by the present invention.

FIG. 15 illustrates a third assembly portion of the first assembly portion of FIG. 14 in combination with the third lamp module. In FIG. 14 , the brand of the first lamp module 110 is matched, for example, to the projector 100 (shown in FIG. 2 ), and the brand of the third lamp module 310 shown in FIG. 15 does not match the projector 100 , for example. 2), for example, the specifications of the first lamp module 110 and the third lamp module 310 may be the same wattage or different wattages, but belong to different brands, wherein the third lamp module 310 has a third assembly portion 310a. The third assembly portion 310a has a third assembly hole A3 and at least one third positioning portion P3 (shown as two recesses). When the first positioning portion P1 of the first assembly portion 140a and the third positioning portion P3 of the third assembly portion 310a are adapted to be fitted and positioned with each other as shown in FIG. 15, the third assembly hole A3 of the third lamp module 310 The error is located in the first assembly hole A1 to prevent the user from accidentally installing the third lamp module 310 into the projector 100 that does not match its specifications (such as a brand).

In summary, the embodiment of the present invention has at least one of the following advantages. In the above embodiment of the present invention, the first openings of the housing of the projector respectively correspond to lamp modules of different specifications, and the cylinders And one of the first openings is disposed according to a predetermined lamp module specification. When the user installs the lamp module (such as the first lamp module) having the predetermined specification to the housing of the projector, the column penetrating one of the first openings will The second opening of the first lamp module extends into the first lamp module through the second opening, so that the first lamp module can be smoothly assembled to the housing. If the cylinder is changed to be placed on the other of the first openings according to another predetermined lamp module specification, when the user assembles the first lamp module to the cast In the case of the casing of the camera, the other of the columns penetrating the one of the first openings is not located in the second opening of the first lamp module, and between the column and the first lamp module Interference is formed to prevent the user from misassembling the first lamp module that does not conform to the specifications of the other lamp module to the housing. Accordingly, it is possible to prevent the user from accidentally installing the lamp module into the projector that does not match it, and the projector may cause low brightness, no lighting, or a blast.

The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are All remain within the scope of the invention patent. In addition, any of the objects or advantages or features of the present invention are not required to be achieved by any embodiment or application of the invention. In addition, the abstract sections and headings are only used to assist in the search of patent documents and are not intended to limit the scope of the invention. The terms "first" and "second" as used in the specification or the claims are used to name or distinguish different ranges of elements, and are not intended to limit the upper or lower limit of the number of elements.

100‧‧‧Projector

110‧‧‧First Light Module

110a‧‧‧Second Assembly Department

112‧‧‧ lamp holder

114‧‧‧First stop

140‧‧‧ Subject

140a‧‧‧First Assembly Department

150‧‧‧shell

152‧‧‧ first surface

154‧‧‧ second surface

160‧‧‧Cylinder

162‧‧‧ head

164‧‧ Thread Department

170‧‧‧ Shell

H1‧‧‧ first opening

H2‧‧‧Second opening

Claims (11)

A projector includes: a casing having a plurality of first openings; a cylinder disposed on the casing; a first lamp module adapted to provide an illumination beam and having a second opening, wherein When the cylinder is inserted into one of the first openings, the cylinder extends into the first lamp module through the second opening, and the first lamp module is assembled to the casing. When the cylinder is disposed in the other of the first openings, the column forms an interference with the first lamp module to prevent the first lamp module from being assembled to the casing; a light valve And on the transmission path of the illumination beam and adapted to convert the illumination beam into an image beam; and a lens located on the transmission path of the image beam and adapted to convert the image beam into a projection beam. The projector of claim 1, wherein the first lamp module comprises a lamp holder and a first stopper, the lamp holder has a recess, and the first stopper is assembled to the lamp The second opening is formed in the first stop, and the second body is formed in the first stop. When the cylinder is disposed in one of the first openings, the cylinder is adapted to pass the second Opening the hole and extending into the groove, when the column is inserted through the other of the first openings, the first stop prevents the column from protruding into the groove. The projector of claim 2, wherein the first stopper has a locking hole and is locked to the socket by the locking hole. The projector of claim 1, wherein the second lamp module Having a third opening, when the column is disposed in one of the first openings, an interference is formed between the column and the second lamp module to prevent the second lamp module from being assembled to The second lamp module is inserted into the second lamp module through the third opening when the column is inserted into the other of the first openings. Assembly to the housing. The projector of claim 4, wherein the second lamp module comprises a lamp holder and a second stopper, the lamp holder has a recess, and the second stopper is assembled to the lamp And the second opening is formed in the second stop, and the second stop blocks the column when the cylinder is disposed in one of the first openings The body extends into the recess, and when the cylinder is disposed through the other of the first openings, the cylinder is adapted to protrude into the recess through the third opening. The projector of claim 1, wherein the projector has a first assembly portion, the first lamp module has a second assembly portion, and the column is inserted through the first openings When the one of the first assembly portion and the second assembly portion are brought into contact with each other, the first lamp module is adapted to be assembled on the housing, and when the column is inserted through the first opening When the other of the holes is formed, an interference is formed between the column and the first lamp module to prevent the first assembly portion and the second assembly portion from coming into contact with each other. The projector of claim 6, wherein the first assembly portion has a first assembly hole and at least one first positioning portion, and the second assembly portion has a second assembly hole and at least a second positioning portion. When the first positioning portion and the second positioning portion are mutually positioned, the first assembly hole pair is located in the second assembly hole. The projector of claim 7, wherein one of the first positioning portion and the second positioning portion is a convex portion, and the other of the positioning portion and the second positioning portion is a concave portion . The projector of claim 7, wherein the third lamp module has a third assembly portion, the third assembly portion has a third assembly hole and at least a third positioning portion, when the first When the positioning portion and the third positioning portion are adapted to be positioned with each other, the third assembly hole of the third lamp module is located at the first assembly hole of the projector. The projector of claim 1, wherein the housing has a first surface and a second surface, the cylinder is a screw and has a head and a thread, the thread Locking from the second surface into any one of the first openings and protruding from the first surface, the head is limited to the second surface, the projector includes a casing and the casing shields the The second surface. The projector of claim 2, wherein the opening range of the recess of the socket covers a distribution range of the first openings in the housing.